mirror of
https://github.com/ziglang/zig.git
synced 2024-12-15 07:40:13 +00:00
0e7897a9a2
Translate enum types as the underlying integer type. Translate enum constants as top-level integer constants of the correct type (which does not necessarily match the enum integer type). If an enum constant's type cannot be translated for some reason, omit it. See discussion https://github.com/ziglang/zig/issues/2115#issuecomment-827968279 Fixes #9153
1651 lines
54 KiB
Zig
1651 lines
54 KiB
Zig
const std = @import("std");
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const tests = @import("tests.zig");
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const nl = std.cstr.line_sep;
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pub fn addCases(cases: *tests.RunTranslatedCContext) void {
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cases.add("dereference address of",
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\\#include <stdlib.h>
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\\int main(void) {
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\\ int i = 0;
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\\ *&i = 42;
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\\ if (i != 42) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("division of floating literals",
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\\#define _NO_CRT_STDIO_INLINE 1
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\\#include <stdio.h>
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\\#define PI 3.14159265358979323846f
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\\#define DEG2RAD (PI/180.0f)
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\\int main(void) {
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\\ printf("DEG2RAD is: %f\n", DEG2RAD);
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\\ return 0;
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\\}
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, "DEG2RAD is: 0.017453" ++ nl);
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cases.add("use global scope for record/enum/typedef type transalation if needed",
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\\void bar(void);
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\\void baz(void);
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\\struct foo { int x; };
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\\void bar() {
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\\ struct foo tmp;
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\\}
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\\
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\\void baz() {
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\\ struct foo tmp;
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\\}
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\\
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\\int main(void) {
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\\ bar();
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\\ baz();
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\\ return 0;
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\\}
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, "");
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cases.add("failed macros are only declared once",
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\\#define FOO =
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\\#define FOO =
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\\#define PtrToPtr64(p) ((void *POINTER_64) p)
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\\#define STRUC_ALIGNED_STACK_COPY(t,s) ((CONST t *)(s))
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\\#define bar = 0x
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\\#define baz = 0b
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\\int main(void) {}
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, "");
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cases.add("parenthesized string literal",
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\\void foo(const char *s) {}
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\\int main(void) {
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\\ foo(("bar"));
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\\}
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, "");
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cases.add("variable shadowing type type",
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\\#include <stdlib.h>
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\\int main() {
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\\ int type = 1;
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\\ if (type != 1) abort();
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\\}
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, "");
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cases.add("assignment as expression",
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\\#include <stdlib.h>
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\\int main() {
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\\ int a, b, c, d = 5;
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\\ int e = a = b = c = d;
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\\ if (e != 5) abort();
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\\}
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, "");
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cases.add("static variable in block scope",
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\\#include <stdlib.h>
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\\int foo() {
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\\ static int bar;
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\\ bar += 1;
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\\ return bar;
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\\}
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\\int main() {
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\\ foo();
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\\ foo();
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\\ if (foo() != 3) abort();
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\\}
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, "");
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cases.add("array initializer",
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\\#include <stdlib.h>
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\\int main(int argc, char **argv) {
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\\ int a0[4] = {1};
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\\ int a1[4] = {1,2,3,4};
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\\ int s0 = 0, s1 = 0;
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\\ for (int i = 0; i < 4; i++) {
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\\ s0 += a0[i];
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\\ s1 += a1[i];
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\\ }
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\\ if (s0 != 1) abort();
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\\ if (s1 != 10) abort();
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\\}
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, "");
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cases.add("forward declarations",
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\\#include <stdlib.h>
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\\int foo(int);
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\\int foo(int x) { return x + 1; }
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\\int main(int argc, char **argv) {
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\\ if (foo(2) != 3) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("typedef and function pointer",
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\\#include <stdlib.h>
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\\typedef struct _Foo Foo;
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\\typedef int Ret;
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\\typedef int Param;
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\\struct _Foo { Ret (*func)(Param p); };
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\\static Ret add1(Param p) {
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\\ return p + 1;
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\\}
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\\int main(int argc, char **argv) {
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\\ Foo strct = { .func = add1 };
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\\ if (strct.func(16) != 17) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("ternary operator",
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\\#include <stdlib.h>
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\\static int cnt = 0;
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\\int foo() { cnt++; return 42; }
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\\int main(int argc, char **argv) {
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\\ short q = 3;
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\\ signed char z0 = q?:1;
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\\ if (z0 != 3) abort();
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\\ int z1 = 3?:1;
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\\ if (z1 != 3) abort();
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\\ int z2 = foo()?:-1;
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\\ if (z2 != 42) abort();
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\\ if (cnt != 1) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("switch case",
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\\#include <stdlib.h>
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\\int lottery(unsigned int x) {
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\\ switch (x) {
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\\ case 3: return 0;
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\\ case -1: return 3;
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\\ case 8 ... 10: return x;
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\\ default: return -1;
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\\ }
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\\}
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\\int main(int argc, char **argv) {
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\\ if (lottery(2) != -1) abort();
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\\ if (lottery(3) != 0) abort();
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\\ if (lottery(-1) != 3) abort();
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\\ if (lottery(9) != 9) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("boolean values and expressions",
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\\#include <stdlib.h>
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\\static const _Bool false_val = 0;
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\\static const _Bool true_val = 1;
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\\void foo(int x, int y) {
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\\ _Bool r = x < y;
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\\ if (!r) abort();
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\\ _Bool self = foo;
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\\ if (self == false_val) abort();
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\\ if (((r) ? 'a' : 'b') != 'a') abort();
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\\}
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\\int main(int argc, char **argv) {
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\\ foo(2, 5);
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\\ if (false_val == true_val) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("hello world",
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\\#define _NO_CRT_STDIO_INLINE 1
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\\#include <stdio.h>
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\\int main(int argc, char **argv) {
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\\ printf("hello, world!\n");
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\\ return 0;
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\\}
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, "hello, world!" ++ nl);
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cases.add("anon struct init",
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\\#include <stdlib.h>
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\\struct {int a; int b;} x = {1, 2};
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\\int main(int argc, char **argv) {
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\\ x.a += 2;
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\\ x.b += 1;
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\\ if (x.a != 3) abort();
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\\ if (x.b != 3) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("casting away const and volatile",
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\\void foo(int *a) {}
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\\void bar(const int *a) {
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\\ foo((int *)a);
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\\}
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\\void baz(volatile int *a) {
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\\ foo((int *)a);
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\\}
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\\int main(int argc, char **argv) {
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\\ int a = 0;
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\\ bar((const int *)&a);
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\\ baz((volatile int *)&a);
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\\ return 0;
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\\}
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, "");
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cases.add("anonymous struct & unions",
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\\#include <stdlib.h>
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\\#include <stdint.h>
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\\static struct { struct { uint16_t x, y; }; } x = { 1 };
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\\static struct { union { uint32_t x; uint8_t y; }; } y = { 0x55AA55AA };
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\\int main(int argc, char **argv) {
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\\ if (x.x != 1) abort();
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\\ if (x.y != 0) abort();
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\\ if (y.x != 0x55AA55AA) abort();
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\\ if (y.y != 0xAA) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("array to pointer decay",
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\\#include <stdlib.h>
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\\int main(int argc, char **argv) {
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\\ char data[3] = {'a','b','c'};
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\\ if (2[data] != data[2]) abort();
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\\ if ("abc"[1] != data[1]) abort();
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\\ char *as_ptr = data;
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\\ if (2[as_ptr] != as_ptr[2]) abort();
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\\ if ("abc"[1] != as_ptr[1]) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("struct initializer - packed",
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\\#define _NO_CRT_STDIO_INLINE 1
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\\#include <stdint.h>
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\\#include <stdlib.h>
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\\struct s {uint8_t x,y;
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\\ uint32_t z;} __attribute__((packed)) s0 = {1, 2};
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\\int main() {
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\\ /* sizeof nor offsetof currently supported */
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\\ if (((intptr_t)&s0.z - (intptr_t)&s0.x) != 2) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("cast signed array index to unsigned",
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\\#include <stdlib.h>
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\\int main(int argc, char **argv) {
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\\ int a[10], i = 0;
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\\ a[i] = 0;
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\\ if (a[i] != 0) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("cast long long array index to unsigned",
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\\#include <stdlib.h>
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\\int main(int argc, char **argv) {
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\\ long long a[10], i = 0;
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\\ a[i] = 0;
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\\ if (a[i] != 0) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("case boolean expression converted to int",
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\\#include <stdlib.h>
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\\int main(int argc, char **argv) {
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\\ int value = 1 + 2 * 3 + 4 * 5 + 6 << 7 | 8 == 9;
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\\ if (value != 4224) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("case boolean expression on left converted to int",
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\\#include <stdlib.h>
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\\int main(int argc, char **argv) {
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\\ int value = 8 == 9 | 1 + 2 * 3 + 4 * 5 + 6 << 7;
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\\ if (value != 4224) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("case boolean and operator+ converts bool to int",
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\\#include <stdlib.h>
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\\int main(int argc, char **argv) {
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\\ int value = (8 == 9) + 3;
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\\ int value2 = 3 + (8 == 9);
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\\ if (value != value2) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("case boolean and operator<",
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\\#include <stdlib.h>
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\\int main(int argc, char **argv) {
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\\ int value = (8 == 9) < 3;
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\\ if (value == 0) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("case boolean and operator*",
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\\#include <stdlib.h>
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\\int main(int argc, char **argv) {
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\\ int value = (8 == 9) * 3;
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\\ int value2 = 3 * (9 == 9);
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\\ if (value != 0) abort();
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\\ if (value2 == 0) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("scoped typedef",
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\\int main(int argc, char **argv) {
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\\ typedef int Foo;
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\\ typedef Foo Bar;
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\\ typedef void (*func)(int);
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\\ typedef int uint32_t;
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\\ uint32_t a;
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\\ Foo i;
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\\ Bar j;
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\\ return 0;
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\\}
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, "");
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cases.add("scoped for loops with shadowing",
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\\#include <stdlib.h>
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\\int main() {
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\\ int count = 0;
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\\ for (int x = 0; x < 2; x++)
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\\ for (int x = 0; x < 2; x++)
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\\ count++;
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\\
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\\ if (count != 4) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("array value type casts properly",
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\\#include <stdlib.h>
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\\unsigned int choose[53][10];
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\\static int hash_binary(int k)
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\\{
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\\ choose[0][k] = 3;
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\\ int sum = 0;
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\\ sum += choose[0][k];
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\\ return sum;
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\\}
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\\
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\\int main() {
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\\ int s = hash_binary(4);
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\\ if (s != 3) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("array value type casts properly use +=",
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\\#include <stdlib.h>
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\\static int hash_binary(int k)
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\\{
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\\ unsigned int choose[1][1] = {{3}};
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\\ int sum = -1;
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\\ int prev = 0;
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\\ prev = sum += choose[0][0];
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\\ if (sum != 2) abort();
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\\ return sum + prev;
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\\}
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\\
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\\int main() {
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\\ int x = hash_binary(4);
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\\ if (x != 4) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("ensure array casts outisde +=",
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\\#include <stdlib.h>
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\\static int hash_binary(int k)
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\\{
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\\ unsigned int choose[3] = {1, 2, 3};
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\\ int sum = -2;
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\\ int prev = sum + choose[k];
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\\ if (prev != 0) abort();
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\\ return sum + prev;
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\\}
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\\
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\\int main() {
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\\ int x = hash_binary(1);
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\\ if (x != -2) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("array cast int to uint",
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\\#include <stdlib.h>
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\\static unsigned int hash_binary(int k)
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\\{
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\\ int choose[3] = {-1, -2, 3};
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\\ unsigned int sum = 2;
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\\ sum += choose[k];
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\\ return sum;
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\\}
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\\
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\\int main() {
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\\ unsigned int x = hash_binary(1);
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\\ if (x != 0) abort();
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\\ return 0;
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\\}
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, "");
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cases.add("assign enum to uint, no explicit cast",
|
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\\#include <stdlib.h>
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\\typedef enum {
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\\ ENUM_0 = 0,
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\\ ENUM_1 = 1,
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\\} my_enum_t;
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\\
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\\int main() {
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\\ my_enum_t val = ENUM_1;
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\\ unsigned int x = val;
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\\ if (x != 1) abort();
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\\ return 0;
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\\}
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, "");
|
|
|
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cases.add("assign enum to int",
|
|
\\#include <stdlib.h>
|
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\\typedef enum {
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\\ ENUM_0 = 0,
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\\ ENUM_1 = 1,
|
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\\} my_enum_t;
|
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\\
|
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\\int main() {
|
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\\ my_enum_t val = ENUM_1;
|
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\\ int x = val;
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\\ if (x != 1) abort();
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\\ return 0;
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\\}
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, "");
|
|
|
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cases.add("cast enum to smaller uint",
|
|
\\#include <stdlib.h>
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\\#include <stdint.h>
|
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\\typedef enum {
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\\ ENUM_0 = 0,
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\\ ENUM_257 = 257,
|
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\\} my_enum_t;
|
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\\
|
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\\int main() {
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\\ my_enum_t val = ENUM_257;
|
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\\ uint8_t x = (uint8_t)val;
|
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\\ if (x != (uint8_t)257) abort();
|
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\\ return 0;
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\\}
|
|
, "");
|
|
|
|
cases.add("cast enum to smaller signed int",
|
|
\\#include <stdlib.h>
|
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\\#include <stdint.h>
|
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\\typedef enum {
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\\ ENUM_0 = 0,
|
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\\ ENUM_384 = 384,
|
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\\} my_enum_t;
|
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\\
|
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\\int main() {
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\\ my_enum_t val = ENUM_384;
|
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\\ int8_t x = (int8_t)val;
|
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\\ if (x != (int8_t)384) abort();
|
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\\ return 0;
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\\}
|
|
, "");
|
|
|
|
cases.add("cast negative enum to smaller signed int",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdint.h>
|
|
\\typedef enum {
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\\ ENUM_MINUS_1 = -1,
|
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\\ ENUM_384 = 384,
|
|
\\} my_enum_t;
|
|
\\
|
|
\\int main() {
|
|
\\ my_enum_t val = ENUM_MINUS_1;
|
|
\\ int8_t x = (int8_t)val;
|
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\\ if (x != -1) abort();
|
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\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("cast negative enum to smaller unsigned int",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdint.h>
|
|
\\typedef enum {
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\\ ENUM_MINUS_1 = -1,
|
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\\ ENUM_384 = 384,
|
|
\\} my_enum_t;
|
|
\\
|
|
\\int main() {
|
|
\\ my_enum_t val = ENUM_MINUS_1;
|
|
\\ uint8_t x = (uint8_t)val;
|
|
\\ if (x != (uint8_t)-1) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("implicit enum cast in boolean expression",
|
|
\\#include <stdlib.h>
|
|
\\enum Foo {
|
|
\\ FooA,
|
|
\\ FooB,
|
|
\\ FooC,
|
|
\\};
|
|
\\int main() {
|
|
\\ int a = 0;
|
|
\\ float b = 0;
|
|
\\ void *c = 0;
|
|
\\ enum Foo d = FooA;
|
|
\\ if (a || d) abort();
|
|
\\ if (d && b) abort();
|
|
\\ if (c || d) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("issue #6707 cast builtin call result to opaque struct pointer",
|
|
\\#include <stdlib.h>
|
|
\\struct foo* make_foo(void)
|
|
\\{
|
|
\\ return (struct foo*)__builtin_strlen("0123456789ABCDEF");
|
|
\\}
|
|
\\int main(void) {
|
|
\\ struct foo *foo_pointer = make_foo();
|
|
\\ if (foo_pointer != (struct foo*)16) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("C built-ins",
|
|
\\#include <stdlib.h>
|
|
\\#include <limits.h>
|
|
\\#include <stdbool.h>
|
|
\\#define M_E 2.71828182845904523536
|
|
\\#define M_PI_2 1.57079632679489661923
|
|
\\bool check_clz(unsigned int pos) {
|
|
\\ return (__builtin_clz(1 << pos) == (8 * sizeof(unsigned int) - pos - 1));
|
|
\\}
|
|
\\int main(void) {
|
|
\\ if (__builtin_bswap16(0x0102) != 0x0201) abort();
|
|
\\ if (__builtin_bswap32(0x01020304) != 0x04030201) abort();
|
|
\\ if (__builtin_bswap64(0x0102030405060708) != 0x0807060504030201) abort();
|
|
\\
|
|
\\ if (__builtin_signbit(0.0) != 0) abort();
|
|
\\ if (__builtin_signbitf(0.0f) != 0) abort();
|
|
\\ if (__builtin_signbit(1.0) != 0) abort();
|
|
\\ if (__builtin_signbitf(1.0f) != 0) abort();
|
|
\\ if (__builtin_signbit(-1.0) != 1) abort();
|
|
\\ if (__builtin_signbitf(-1.0f) != 1) abort();
|
|
\\
|
|
\\ if (__builtin_popcount(0) != 0) abort();
|
|
\\ if (__builtin_popcount(0b1) != 1) abort();
|
|
\\ if (__builtin_popcount(0b11) != 2) abort();
|
|
\\ if (__builtin_popcount(0b1111) != 4) abort();
|
|
\\ if (__builtin_popcount(0b11111111) != 8) abort();
|
|
\\
|
|
\\ if (__builtin_ctz(0b1) != 0) abort();
|
|
\\ if (__builtin_ctz(0b10) != 1) abort();
|
|
\\ if (__builtin_ctz(0b100) != 2) abort();
|
|
\\ if (__builtin_ctz(0b10000) != 4) abort();
|
|
\\ if (__builtin_ctz(0b100000000) != 8) abort();
|
|
\\
|
|
\\ if (!check_clz(0)) abort();
|
|
\\ if (!check_clz(1)) abort();
|
|
\\ if (!check_clz(2)) abort();
|
|
\\ if (!check_clz(4)) abort();
|
|
\\ if (!check_clz(8)) abort();
|
|
\\
|
|
\\ if (__builtin_sqrt(__builtin_sqrt(__builtin_sqrt(256))) != 2.0) abort();
|
|
\\ if (__builtin_sqrt(__builtin_sqrt(__builtin_sqrt(256.0))) != 2.0) abort();
|
|
\\ if (__builtin_sqrt(__builtin_sqrt(__builtin_sqrt(256.0f))) != 2.0) abort();
|
|
\\ if (__builtin_sqrtf(__builtin_sqrtf(__builtin_sqrtf(256.0f))) != 2.0f) abort();
|
|
\\
|
|
\\ if (__builtin_sin(1.0) != -__builtin_sin(-1.0)) abort();
|
|
\\ if (__builtin_sinf(1.0f) != -__builtin_sinf(-1.0f)) abort();
|
|
\\ if (__builtin_sin(M_PI_2) != 1.0) abort();
|
|
\\ if (__builtin_sinf(M_PI_2) != 1.0f) abort();
|
|
\\
|
|
\\ if (__builtin_cos(1.0) != __builtin_cos(-1.0)) abort();
|
|
\\ if (__builtin_cosf(1.0f) != __builtin_cosf(-1.0f)) abort();
|
|
\\ if (__builtin_cos(0.0) != 1.0) abort();
|
|
\\ if (__builtin_cosf(0.0f) != 1.0f) abort();
|
|
\\
|
|
\\ if (__builtin_exp(0) != 1.0) abort();
|
|
\\ if (__builtin_fabs(__builtin_exp(1.0) - M_E) > 0.00000001) abort();
|
|
\\ if (__builtin_exp(0.0f) != 1.0f) abort();
|
|
\\
|
|
\\ if (__builtin_exp2(0) != 1.0) abort();
|
|
\\ if (__builtin_exp2(4.0) != 16.0) abort();
|
|
\\ if (__builtin_exp2f(0.0f) != 1.0f) abort();
|
|
\\ if (__builtin_exp2f(4.0f) != 16.0f) abort();
|
|
\\
|
|
\\ if (__builtin_log(M_E) != 1.0) abort();
|
|
\\ if (__builtin_log(1.0) != 0.0) abort();
|
|
\\ if (__builtin_logf(1.0f) != 0.0f) abort();
|
|
\\
|
|
\\ if (__builtin_log2(8.0) != 3.0) abort();
|
|
\\ if (__builtin_log2(1.0) != 0.0) abort();
|
|
\\ if (__builtin_log2f(8.0f) != 3.0f) abort();
|
|
\\ if (__builtin_log2f(1.0f) != 0.0f) abort();
|
|
\\
|
|
\\ if (__builtin_log10(1000.0) != 3.0) abort();
|
|
\\ if (__builtin_log10(1.0) != 0.0) abort();
|
|
\\ if (__builtin_log10f(1000.0f) != 3.0f) abort();
|
|
\\ if (__builtin_log10f(1.0f) != 0.0f) abort();
|
|
\\
|
|
\\ if (__builtin_fabs(-42.0f) != 42.0) abort();
|
|
\\ if (__builtin_fabs(-42.0) != 42.0) abort();
|
|
\\ if (__builtin_fabs(-42) != 42.0) abort();
|
|
\\ if (__builtin_fabsf(-42.0f) != 42.0f) abort();
|
|
\\
|
|
\\ if (__builtin_fabs(-42.0f) != 42.0) abort();
|
|
\\ if (__builtin_fabs(-42.0) != 42.0) abort();
|
|
\\ if (__builtin_fabs(-42) != 42.0) abort();
|
|
\\ if (__builtin_fabsf(-42.0f) != 42.0f) abort();
|
|
\\
|
|
\\ if (__builtin_abs(42) != 42) abort();
|
|
\\ if (__builtin_abs(-42) != 42) abort();
|
|
\\ if (__builtin_abs(INT_MIN) != INT_MIN) abort();
|
|
\\
|
|
\\ if (__builtin_floor(42.9) != 42.0) abort();
|
|
\\ if (__builtin_floor(-42.9) != -43.0) abort();
|
|
\\ if (__builtin_floorf(42.9f) != 42.0f) abort();
|
|
\\ if (__builtin_floorf(-42.9f) != -43.0f) abort();
|
|
\\
|
|
\\ if (__builtin_ceil(42.9) != 43.0) abort();
|
|
\\ if (__builtin_ceil(-42.9) != -42) abort();
|
|
\\ if (__builtin_ceilf(42.9f) != 43.0f) abort();
|
|
\\ if (__builtin_ceilf(-42.9f) != -42.0f) abort();
|
|
\\
|
|
\\ if (__builtin_trunc(42.9) != 42.0) abort();
|
|
\\ if (__builtin_truncf(42.9f) != 42.0f) abort();
|
|
\\ if (__builtin_trunc(-42.9) != -42.0) abort();
|
|
\\ if (__builtin_truncf(-42.9f) != -42.0f) abort();
|
|
\\
|
|
\\ if (__builtin_round(0.5) != 1.0) abort();
|
|
\\ if (__builtin_round(-0.5) != -1.0) abort();
|
|
\\ if (__builtin_roundf(0.5f) != 1.0f) abort();
|
|
\\ if (__builtin_roundf(-0.5f) != -1.0f) abort();
|
|
\\
|
|
\\ if (__builtin_strcmp("abc", "abc") != 0) abort();
|
|
\\ if (__builtin_strcmp("abc", "def") >= 0 ) abort();
|
|
\\ if (__builtin_strcmp("def", "abc") <= 0) abort();
|
|
\\
|
|
\\ if (__builtin_strlen("this is a string") != 16) abort();
|
|
\\
|
|
\\ char *s = malloc(6);
|
|
\\ __builtin_memcpy(s, "hello", 5);
|
|
\\ s[5] = '\0';
|
|
\\ if (__builtin_strlen(s) != 5) abort();
|
|
\\
|
|
\\ __builtin_memset(s, 42, __builtin_strlen(s));
|
|
\\ if (s[0] != 42 || s[1] != 42 || s[2] != 42 || s[3] != 42 || s[4] != 42) abort();
|
|
\\
|
|
\\ free(s);
|
|
\\
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("function macro that uses builtin",
|
|
\\#include <stdlib.h>
|
|
\\#define FOO(x, y) (__builtin_popcount((x)) + __builtin_strlen((y)))
|
|
\\int main() {
|
|
\\ if (FOO(7, "hello!") != 9) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("assign bool result to int or char",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdbool.h>
|
|
\\bool foo() { return true; }
|
|
\\int main() {
|
|
\\ int x = foo();
|
|
\\ if (x != 1) abort();
|
|
\\ signed char c = foo();
|
|
\\ if (c != 1) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("static K&R-style no prototype function declaration (empty parameter list)",
|
|
\\#include <stdlib.h>
|
|
\\static int foo() {
|
|
\\ return 42;
|
|
\\}
|
|
\\int main() {
|
|
\\ if (foo() != 42) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("K&R-style static function prototype for unused function",
|
|
\\static int foo();
|
|
\\int main() {
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("K&R-style static function prototype + separate definition",
|
|
\\#include <stdlib.h>
|
|
\\static int foo();
|
|
\\static int foo(int a, int b) {
|
|
\\ return a + b;
|
|
\\}
|
|
\\int main() {
|
|
\\ if (foo(40, 2) != 42) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("dollar sign in identifiers",
|
|
\\#include <stdlib.h>
|
|
\\#define $FOO 2
|
|
\\#define $foo bar$
|
|
\\#define $baz($x) ($x + $FOO)
|
|
\\int $$$(int $x$) { return $x$ + $FOO; }
|
|
\\int main() {
|
|
\\ int bar$ = 42;
|
|
\\ if ($foo != 42) abort();
|
|
\\ if (bar$ != 42) abort();
|
|
\\ if ($baz(bar$) != 44) abort();
|
|
\\ if ($$$(bar$) != 44) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Cast boolean expression result to int",
|
|
\\#include <stdlib.h>
|
|
\\char foo(char c) { return c; }
|
|
\\int bar(int i) { return i; }
|
|
\\long baz(long l) { return l; }
|
|
\\int main() {
|
|
\\ if (foo(1 == 2)) abort();
|
|
\\ if (!foo(1 == 1)) abort();
|
|
\\ if (bar(1 == 2)) abort();
|
|
\\ if (!bar(1 == 1)) abort();
|
|
\\ if (baz(1 == 2)) abort();
|
|
\\ if (!baz(1 == 1)) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Wide, UTF-16, and UTF-32 character literals",
|
|
\\#include <wchar.h>
|
|
\\#include <stdlib.h>
|
|
\\int main() {
|
|
\\ wchar_t wc = L'™';
|
|
\\ int utf16_char = u'™';
|
|
\\ int utf32_char = U'💯';
|
|
\\ if (wc != 8482) abort();
|
|
\\ if (utf16_char != 8482) abort();
|
|
\\ if (utf32_char != 128175) abort();
|
|
\\ unsigned char c = wc;
|
|
\\ if (c != 0x22) abort();
|
|
\\ c = utf32_char;
|
|
\\ if (c != 0xaf) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Variadic function call",
|
|
\\#define _NO_CRT_STDIO_INLINE 1
|
|
\\#include <stdio.h>
|
|
\\int main(void) {
|
|
\\ printf("%d %d\n", 1, 2);
|
|
\\ return 0;
|
|
\\}
|
|
, "1 2" ++ nl);
|
|
|
|
cases.add("multi-character character constant",
|
|
\\#include <stdlib.h>
|
|
\\int main(void) {
|
|
\\ int foo = 'abcd';
|
|
\\ switch (foo) {
|
|
\\ case 'abcd': break;
|
|
\\ default: abort();
|
|
\\ }
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Array initializers (string literals, incomplete arrays)",
|
|
\\#include <stdlib.h>
|
|
\\#include <string.h>
|
|
\\extern int foo[];
|
|
\\int global_arr[] = {1, 2, 3};
|
|
\\char global_string[] = "hello";
|
|
\\int main(int argc, char *argv[]) {
|
|
\\ if (global_arr[2] != 3) abort();
|
|
\\ if (strlen(global_string) != 5) abort();
|
|
\\ const char *const_str = "hello";
|
|
\\ if (strcmp(const_str, "hello") != 0) abort();
|
|
\\ char empty_str[] = "";
|
|
\\ if (strlen(empty_str) != 0) abort();
|
|
\\ char hello[] = "hello";
|
|
\\ if (strlen(hello) != 5 || sizeof(hello) != 6) abort();
|
|
\\ int empty[] = {};
|
|
\\ if (sizeof(empty) != 0) abort();
|
|
\\ int bar[] = {42};
|
|
\\ if (bar[0] != 42) abort();
|
|
\\ bar[0] = 43;
|
|
\\ if (bar[0] != 43) abort();
|
|
\\ int baz[] = {1, [42] = 123, 456};
|
|
\\ if (baz[42] != 123 || baz[43] != 456) abort();
|
|
\\ if (sizeof(baz) != sizeof(int) * 44) abort();
|
|
\\ const char *const names[] = {"first", "second", "third"};
|
|
\\ if (strcmp(names[2], "third") != 0) abort();
|
|
\\ char catted_str[] = "abc" "def";
|
|
\\ if (strlen(catted_str) != 6 || sizeof(catted_str) != 7) abort();
|
|
\\ char catted_trunc_str[2] = "abc" "def";
|
|
\\ if (sizeof(catted_trunc_str) != 2 || catted_trunc_str[0] != 'a' || catted_trunc_str[1] != 'b') abort();
|
|
\\ char big_array_utf8lit[10] = "💯";
|
|
\\ if (strcmp(big_array_utf8lit, "💯") != 0 || big_array_utf8lit[9] != 0) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Wide, UTF-16, and UTF-32 string literals",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdint.h>
|
|
\\#include <wchar.h>
|
|
\\int main(void) {
|
|
\\ const wchar_t *wide_str = L"wide";
|
|
\\ const wchar_t wide_hello[] = L"hello";
|
|
\\ if (wcslen(wide_str) != 4) abort();
|
|
\\ if (wcslen(L"literal") != 7) abort();
|
|
\\ if (wcscmp(wide_hello, L"hello") != 0) abort();
|
|
\\
|
|
\\ const uint16_t *u16_str = u"wide";
|
|
\\ const uint16_t u16_hello[] = u"hello";
|
|
\\ if (u16_str[3] != u'e' || u16_str[4] != 0) abort();
|
|
\\ if (u16_hello[4] != u'o' || u16_hello[5] != 0) abort();
|
|
\\
|
|
\\ const uint32_t *u32_str = U"wide";
|
|
\\ const uint32_t u32_hello[] = U"hello";
|
|
\\ if (u32_str[3] != U'e' || u32_str[4] != 0) abort();
|
|
\\ if (u32_hello[4] != U'o' || u32_hello[5] != 0) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Address of function is no-op",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdbool.h>
|
|
\\typedef int (*myfunc)(int);
|
|
\\int a(int arg) { return arg + 1;}
|
|
\\int b(int arg) { return arg + 2;}
|
|
\\int caller(myfunc fn, int arg) {
|
|
\\ return fn(arg);
|
|
\\}
|
|
\\int main() {
|
|
\\ myfunc arr[3] = {&a, &b, a};
|
|
\\ myfunc foo = a;
|
|
\\ myfunc bar = &(a);
|
|
\\ if (foo != bar) abort();
|
|
\\ if (arr[0] == arr[1]) abort();
|
|
\\ if (arr[0] != arr[2]) abort();
|
|
\\ if (caller(b, 40) != 42) abort();
|
|
\\ if (caller(&b, 40) != 42) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Obscure ways of calling functions; issue #4124",
|
|
\\#include <stdlib.h>
|
|
\\static int add(int a, int b) {
|
|
\\ return a + b;
|
|
\\}
|
|
\\typedef int (*adder)(int, int);
|
|
\\typedef void (*funcptr)(void);
|
|
\\int main() {
|
|
\\ if ((add)(1, 2) != 3) abort();
|
|
\\ if ((&add)(1, 2) != 3) abort();
|
|
\\ if (add(3, 1) != 4) abort();
|
|
\\ if ((*add)(2, 3) != 5) abort();
|
|
\\ if ((**add)(7, -1) != 6) abort();
|
|
\\ if ((***add)(-2, 9) != 7) abort();
|
|
\\
|
|
\\ int (*ptr)(int a, int b);
|
|
\\ ptr = add;
|
|
\\
|
|
\\ if (ptr(1, 2) != 3) abort();
|
|
\\ if ((*ptr)(3, 1) != 4) abort();
|
|
\\ if ((**ptr)(2, 3) != 5) abort();
|
|
\\ if ((***ptr)(7, -1) != 6) abort();
|
|
\\ if ((****ptr)(-2, 9) != 7) abort();
|
|
\\
|
|
\\ funcptr addr1 = (funcptr)(add);
|
|
\\ funcptr addr2 = (funcptr)(&add);
|
|
\\
|
|
\\ if (addr1 != addr2) abort();
|
|
\\ if (((int(*)(int, int))addr1)(1, 2) != 3) abort();
|
|
\\ if (((adder)addr2)(1, 2) != 3) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Return boolean expression as int; issue #6215",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdbool.h>
|
|
\\bool actual_bool(void) { return 4 - 1 < 4;}
|
|
\\char char_bool_ret(void) { return 0 || 1; }
|
|
\\short short_bool_ret(void) { return 0 < 1; }
|
|
\\int int_bool_ret(void) { return 1 && 1; }
|
|
\\long long_bool_ret(void) { return !(0 > 1); }
|
|
\\static int GLOBAL = 1;
|
|
\\int nested_scopes(int a, int b) {
|
|
\\ if (a == 1) {
|
|
\\ int target = 1;
|
|
\\ return b == target;
|
|
\\ } else {
|
|
\\ int target = 2;
|
|
\\ if (b == target) {
|
|
\\ return GLOBAL == 1;
|
|
\\ }
|
|
\\ return target == 2;
|
|
\\ }
|
|
\\}
|
|
\\int main(void) {
|
|
\\ if (!actual_bool()) abort();
|
|
\\ if (!char_bool_ret()) abort();
|
|
\\ if (!short_bool_ret()) abort();
|
|
\\ if (!int_bool_ret()) abort();
|
|
\\ if (!long_bool_ret()) abort();
|
|
\\ if (!nested_scopes(1, 1)) abort();
|
|
\\ if (nested_scopes(1, 2)) abort();
|
|
\\ if (!nested_scopes(0, 2)) abort();
|
|
\\ if (!nested_scopes(0, 3)) abort();
|
|
\\ return 1 != 1;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Comma operator should create new scope; issue #7989",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdio.h>
|
|
\\int main(void) {
|
|
\\ if (1 || (abort(), 1)) {}
|
|
\\ if (0 && (1, printf("do not print\n"))) {}
|
|
\\ int x = 0;
|
|
\\ x = (x = 3, 4, x + 1);
|
|
\\ if (x != 4) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Use correct break label for statement expression in nested scope",
|
|
\\#include <stdlib.h>
|
|
\\int main(void) {
|
|
\\ int x = ({1, ({2; 3;});});
|
|
\\ if (x != 3) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("pointer difference: scalar array w/ size truncation or negative result. Issue #7216",
|
|
\\#include <stdlib.h>
|
|
\\#include <stddef.h>
|
|
\\#define SIZE 10
|
|
\\int main() {
|
|
\\ int foo[SIZE];
|
|
\\ int *start = &foo[0];
|
|
\\ int *one_past_end = start + SIZE;
|
|
\\ ptrdiff_t diff = one_past_end - start;
|
|
\\ char diff_char = one_past_end - start;
|
|
\\ if (diff != SIZE || diff_char != SIZE) abort();
|
|
\\ diff = start - one_past_end;
|
|
\\ if (diff != -SIZE) abort();
|
|
\\ if (one_past_end - foo != SIZE) abort();
|
|
\\ if ((one_past_end - 1) - foo != SIZE - 1) abort();
|
|
\\ if ((start + 1) - foo != 1) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
// C standard: if the expression P points either to an element of an array object or one
|
|
// past the last element of an array object, and the expression Q points to the last
|
|
// element of the same array object, the expression ((Q)+1)-(P) has the same value as
|
|
// ((Q)-(P))+1 and as -((P)-((Q)+1)), and has the value zero if the expression P points
|
|
// one past the last element of the array object, even though the expression (Q)+1
|
|
// does not point to an element of the array object
|
|
cases.add("pointer difference: C standard edge case",
|
|
\\#include <stdlib.h>
|
|
\\#include <stddef.h>
|
|
\\#define SIZE 10
|
|
\\int main() {
|
|
\\ int foo[SIZE];
|
|
\\ int *start = &foo[0];
|
|
\\ int *P = start + SIZE;
|
|
\\ int *Q = &foo[SIZE - 1];
|
|
\\ if ((Q + 1) - P != 0) abort();
|
|
\\ if ((Q + 1) - P != (Q - P) + 1) abort();
|
|
\\ if ((Q + 1) - P != -(P - (Q + 1))) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("pointer difference: unary operators",
|
|
\\#include <stdlib.h>
|
|
\\int main() {
|
|
\\ int foo[10];
|
|
\\ int *x = &foo[1];
|
|
\\ const int *y = &foo[5];
|
|
\\ if (y - x++ != 4) abort();
|
|
\\ if (y - x != 3) abort();
|
|
\\ if (y - ++x != 2) abort();
|
|
\\ if (y - x-- != 2) abort();
|
|
\\ if (y - x != 3) abort();
|
|
\\ if (y - --x != 4) abort();
|
|
\\ if (y - &foo[0] != 5) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("pointer difference: struct array with padding",
|
|
\\#include <stdlib.h>
|
|
\\#include <stddef.h>
|
|
\\#define SIZE 10
|
|
\\typedef struct my_struct {
|
|
\\ int x;
|
|
\\ char c;
|
|
\\ int y;
|
|
\\} my_struct_t;
|
|
\\int main() {
|
|
\\ my_struct_t foo[SIZE];
|
|
\\ my_struct_t *start = &foo[0];
|
|
\\ my_struct_t *one_past_end = start + SIZE;
|
|
\\ ptrdiff_t diff = one_past_end - start;
|
|
\\ int diff_int = one_past_end - start;
|
|
\\ if (diff != SIZE || diff_int != SIZE) abort();
|
|
\\ diff = start - one_past_end;
|
|
\\ if (diff != -SIZE) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("pointer difference: array of function pointers",
|
|
\\#include <stdlib.h>
|
|
\\int a(void) { return 1;}
|
|
\\int b(void) { return 2;}
|
|
\\int c(void) { return 3;}
|
|
\\typedef int (*myfunc)(void);
|
|
\\int main() {
|
|
\\ myfunc arr[] = {a, b, c, a, b, c};
|
|
\\ myfunc *f1 = &arr[1];
|
|
\\ myfunc *f4 = &arr[4];
|
|
\\ if (f4 - f1 != 3) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("typeof operator",
|
|
\\#include <stdlib.h>
|
|
\\static int FOO = 42;
|
|
\\typedef typeof(FOO) foo_type;
|
|
\\typeof(foo_type) myfunc(typeof(FOO) x) { return (typeof(FOO)) x; }
|
|
\\int main(void) {
|
|
\\ int x = FOO;
|
|
\\ typeof(x) y = x;
|
|
\\ foo_type z = y;
|
|
\\ if (x != y) abort();
|
|
\\ if (myfunc(z) != x) abort();
|
|
\\
|
|
\\ const char *my_string = "bar";
|
|
\\ typeof (typeof (my_string)[4]) string_arr = {"a","b","c","d"};
|
|
\\ if (string_arr[0][0] != 'a' || string_arr[3][0] != 'd') abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("offsetof",
|
|
\\#include <stddef.h>
|
|
\\#include <stdlib.h>
|
|
\\#define container_of(ptr, type, member) ({ \
|
|
\\ const typeof( ((type *)0)->member ) *__mptr = (ptr); \
|
|
\\ (type *)( (char *)__mptr - offsetof(type,member) );})
|
|
\\typedef struct {
|
|
\\ int i;
|
|
\\ struct { int x; char y; int z; } s;
|
|
\\ float f;
|
|
\\} container;
|
|
\\int main(void) {
|
|
\\ if (offsetof(container, i) != 0) abort();
|
|
\\ if (offsetof(container, s) <= offsetof(container, i)) abort();
|
|
\\ if (offsetof(container, f) <= offsetof(container, s)) abort();
|
|
\\
|
|
\\ container my_container;
|
|
\\ typeof(my_container.s) *inner_member_pointer = &my_container.s;
|
|
\\ float *float_member_pointer = &my_container.f;
|
|
\\ int *anon_member_pointer = &my_container.s.z;
|
|
\\ container *my_container_p;
|
|
\\
|
|
\\ my_container_p = container_of(inner_member_pointer, container, s);
|
|
\\ if (my_container_p != &my_container) abort();
|
|
\\
|
|
\\ my_container_p = container_of(float_member_pointer, container, f);
|
|
\\ if (my_container_p != &my_container) abort();
|
|
\\
|
|
\\ if (container_of(anon_member_pointer, typeof(my_container.s), z) != inner_member_pointer) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("handle assert.h",
|
|
\\#include <assert.h>
|
|
\\int main() {
|
|
\\ int x = 1;
|
|
\\ int *xp = &x;
|
|
\\ assert(1);
|
|
\\ assert(x != 0);
|
|
\\ assert(xp);
|
|
\\ assert(*xp);
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("NDEBUG disables assert",
|
|
\\#define NDEBUG
|
|
\\#include <assert.h>
|
|
\\int main() {
|
|
\\ assert(0);
|
|
\\ assert(NULL);
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("pointer arithmetic with signed operand",
|
|
\\#include <stdlib.h>
|
|
\\int main() {
|
|
\\ int array[10];
|
|
\\ int *x = &array[5];
|
|
\\ int *y;
|
|
\\ int idx = 0;
|
|
\\ y = x + ++idx;
|
|
\\ if (y != x + 1 || y != &array[6]) abort();
|
|
\\ y = idx + x;
|
|
\\ if (y != x + 1 || y != &array[6]) abort();
|
|
\\ y = x - idx;
|
|
\\ if (y != x - 1 || y != &array[4]) abort();
|
|
\\
|
|
\\ idx = 0;
|
|
\\ y = --idx + x;
|
|
\\ if (y != x - 1 || y != &array[4]) abort();
|
|
\\ y = idx + x;
|
|
\\ if (y != x - 1 || y != &array[4]) abort();
|
|
\\ y = x - idx;
|
|
\\ if (y != x + 1 || y != &array[6]) abort();
|
|
\\
|
|
\\ idx = 1;
|
|
\\ x += idx;
|
|
\\ if (x != &array[6]) abort();
|
|
\\ x -= idx;
|
|
\\ if (x != &array[5]) abort();
|
|
\\ y = (x += idx);
|
|
\\ if (y != x || y != &array[6]) abort();
|
|
\\ y = (x -= idx);
|
|
\\ if (y != x || y != &array[5]) abort();
|
|
\\
|
|
\\ if (array + idx != &array[1] || array + 1 != &array[1]) abort();
|
|
\\ idx = -1;
|
|
\\ if (array - idx != &array[1]) abort();
|
|
\\
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Compound literals",
|
|
\\#include <stdlib.h>
|
|
\\struct Foo {
|
|
\\ int a;
|
|
\\ char b[2];
|
|
\\ float c;
|
|
\\};
|
|
\\int main() {
|
|
\\ struct Foo foo;
|
|
\\ int x = 1, y = 2;
|
|
\\ foo = (struct Foo) {x + y, {'a', 'b'}, 42.0f};
|
|
\\ if (foo.a != x + y || foo.b[0] != 'a' || foo.b[1] != 'b' || foo.c != 42.0f) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Generic selections",
|
|
\\#include <stdlib.h>
|
|
\\#include <string.h>
|
|
\\#include <stdint.h>
|
|
\\#define my_generic_fn(X) _Generic((X), \
|
|
\\ int: abs, \
|
|
\\ char *: strlen, \
|
|
\\ size_t: malloc, \
|
|
\\ default: free \
|
|
\\)(X)
|
|
\\#define my_generic_val(X) _Generic((X), \
|
|
\\ int: 1, \
|
|
\\ const char *: "bar" \
|
|
\\)
|
|
\\int main(void) {
|
|
\\ if (my_generic_val(100) != 1) abort();
|
|
\\
|
|
\\ const char *foo = "foo";
|
|
\\ const char *bar = my_generic_val(foo);
|
|
\\ if (strcmp(bar, "bar") != 0) abort();
|
|
\\
|
|
\\ if (my_generic_fn(-42) != 42) abort();
|
|
\\ if (my_generic_fn("hello") != 5) abort();
|
|
\\
|
|
\\ size_t size = 8192;
|
|
\\ uint8_t *mem = my_generic_fn(size);
|
|
\\ memset(mem, 42, size);
|
|
\\ if (mem[size - 1] != 42) abort();
|
|
\\ my_generic_fn(mem);
|
|
\\
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
// See __builtin_alloca_with_align comment in std.c.builtins
|
|
cases.add("use of unimplemented builtin in unused function does not prevent compilation",
|
|
\\#include <stdlib.h>
|
|
\\void unused() {
|
|
\\ __builtin_alloca_with_align(1, 8);
|
|
\\}
|
|
\\int main(void) {
|
|
\\ if (__builtin_sqrt(1.0) != 1.0) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("convert single-statement bodies into blocks for if/else/for/while. issue #8159",
|
|
\\#include <stdlib.h>
|
|
\\int foo() { return 1; }
|
|
\\int main(void) {
|
|
\\ int i = 0;
|
|
\\ if (i == 0) if (i == 0) if (i != 0) i = 1;
|
|
\\ if (i != 0) i = 1; else if (i == 0) if (i == 0) i += 1;
|
|
\\ for (; i < 10;) for (; i < 10;) i++;
|
|
\\ while (i == 100) while (i == 100) foo();
|
|
\\ if (0) do do "string"; while(1); while(1);
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("cast RHS of compound assignment if necessary, unused result",
|
|
\\#include <stdlib.h>
|
|
\\int main(void) {
|
|
\\ signed short val = -1;
|
|
\\ val += 1; if (val != 0) abort();
|
|
\\ val -= 1; if (val != -1) abort();
|
|
\\ val *= 2; if (val != -2) abort();
|
|
\\ val /= 2; if (val != -1) abort();
|
|
\\ val %= 2; if (val != -1) abort();
|
|
\\ val <<= 1; if (val != -2) abort();
|
|
\\ val >>= 1; if (val != -1) abort();
|
|
\\ val += 100000000; // compile error if @truncate() not inserted
|
|
\\ unsigned short uval = 1;
|
|
\\ uval += 1; if (uval != 2) abort();
|
|
\\ uval -= 1; if (uval != 1) abort();
|
|
\\ uval *= 2; if (uval != 2) abort();
|
|
\\ uval /= 2; if (uval != 1) abort();
|
|
\\ uval %= 2; if (uval != 1) abort();
|
|
\\ uval <<= 1; if (uval != 2) abort();
|
|
\\ uval >>= 1; if (uval != 1) abort();
|
|
\\ uval += 100000000; // compile error if @truncate() not inserted
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("cast RHS of compound assignment if necessary, used result",
|
|
\\#include <stdlib.h>
|
|
\\int main(void) {
|
|
\\ signed short foo;
|
|
\\ signed short val = -1;
|
|
\\ foo = (val += 1); if (foo != 0) abort();
|
|
\\ foo = (val -= 1); if (foo != -1) abort();
|
|
\\ foo = (val *= 2); if (foo != -2) abort();
|
|
\\ foo = (val /= 2); if (foo != -1) abort();
|
|
\\ foo = (val %= 2); if (foo != -1) abort();
|
|
\\ foo = (val <<= 1); if (foo != -2) abort();
|
|
\\ foo = (val >>= 1); if (foo != -1) abort();
|
|
\\ foo = (val += 100000000); // compile error if @truncate() not inserted
|
|
\\ unsigned short ufoo;
|
|
\\ unsigned short uval = 1;
|
|
\\ ufoo = (uval += 1); if (ufoo != 2) abort();
|
|
\\ ufoo = (uval -= 1); if (ufoo != 1) abort();
|
|
\\ ufoo = (uval *= 2); if (ufoo != 2) abort();
|
|
\\ ufoo = (uval /= 2); if (ufoo != 1) abort();
|
|
\\ ufoo = (uval %= 2); if (ufoo != 1) abort();
|
|
\\ ufoo = (uval <<= 1); if (ufoo != 2) abort();
|
|
\\ ufoo = (uval >>= 1); if (ufoo != 1) abort();
|
|
\\ ufoo = (uval += 100000000); // compile error if @truncate() not inserted
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("basic vector expressions",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdint.h>
|
|
\\typedef int16_t __v8hi __attribute__((__vector_size__(16)));
|
|
\\int main(int argc, char**argv) {
|
|
\\ __v8hi uninitialized;
|
|
\\ __v8hi empty_init = {};
|
|
\\ __v8hi partial_init = {0, 1, 2, 3};
|
|
\\
|
|
\\ __v8hi a = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
\\ __v8hi b = (__v8hi) {100, 200, 300, 400, 500, 600, 700, 800};
|
|
\\
|
|
\\ __v8hi sum = a + b;
|
|
\\ for (int i = 0; i < 8; i++) {
|
|
\\ if (sum[i] != a[i] + b[i]) abort();
|
|
\\ }
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("__builtin_shufflevector",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdint.h>
|
|
\\typedef int16_t __v4hi __attribute__((__vector_size__(8)));
|
|
\\typedef int16_t __v8hi __attribute__((__vector_size__(16)));
|
|
\\int main(int argc, char**argv) {
|
|
\\ __v8hi v8_a = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
\\ __v8hi v8_b = {100, 200, 300, 400, 500, 600, 700, 800};
|
|
\\ __v8hi shuffled = __builtin_shufflevector(v8_a, v8_b, 0, 1, 2, 3, 8, 9, 10, 11);
|
|
\\ for (int i = 0; i < 8; i++) {
|
|
\\ if (i < 4) {
|
|
\\ if (shuffled[i] != v8_a[i]) abort();
|
|
\\ } else {
|
|
\\ if (shuffled[i] != v8_b[i - 4]) abort();
|
|
\\ }
|
|
\\ }
|
|
\\ shuffled = __builtin_shufflevector(
|
|
\\ (__v8hi) {-1, -1, -1, -1, -1, -1, -1, -1},
|
|
\\ (__v8hi) {42, 42, 42, 42, 42, 42, 42, 42},
|
|
\\ 0, 1, 2, 3, 8, 9, 10, 11
|
|
\\ );
|
|
\\ for (int i = 0; i < 8; i++) {
|
|
\\ if (i < 4) {
|
|
\\ if (shuffled[i] != -1) abort();
|
|
\\ } else {
|
|
\\ if (shuffled[i] != 42) abort();
|
|
\\ }
|
|
\\ }
|
|
\\ __v4hi shuffled_to_fewer_elements = __builtin_shufflevector(v8_a, v8_b, 0, 1, 8, 9);
|
|
\\ for (int i = 0; i < 4; i++) {
|
|
\\ if (i < 2) {
|
|
\\ if (shuffled_to_fewer_elements[i] != v8_a[i]) abort();
|
|
\\ } else {
|
|
\\ if (shuffled_to_fewer_elements[i] != v8_b[i - 2]) abort();
|
|
\\ }
|
|
\\ }
|
|
\\ __v4hi v4_a = {0, 1, 2, 3};
|
|
\\ __v4hi v4_b = {100, 200, 300, 400};
|
|
\\ __v8hi shuffled_to_more_elements = __builtin_shufflevector(v4_a, v4_b, 0, 1, 2, 3, 4, 5, 6, 7);
|
|
\\ for (int i = 0; i < 4; i++) {
|
|
\\ if (shuffled_to_more_elements[i] != v4_a[i]) abort();
|
|
\\ if (shuffled_to_more_elements[i + 4] != v4_b[i]) abort();
|
|
\\ }
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("__builtin_convertvector",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdint.h>
|
|
\\typedef int16_t __v8hi __attribute__((__vector_size__(16)));
|
|
\\typedef uint16_t __v8hu __attribute__((__vector_size__(16)));
|
|
\\int main(int argc, char**argv) {
|
|
\\ __v8hi signed_vector = { 1, 2, 3, 4, -1, -2, -3,-4};
|
|
\\ __v8hu unsigned_vector = __builtin_convertvector(signed_vector, __v8hu);
|
|
\\
|
|
\\ for (int i = 0; i < 8; i++) {
|
|
\\ if (unsigned_vector[i] != (uint16_t)signed_vector[i]) abort();
|
|
\\ }
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("vector casting",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdint.h>
|
|
\\typedef int8_t __v8qi __attribute__((__vector_size__(8)));
|
|
\\typedef uint8_t __v8qu __attribute__((__vector_size__(8)));
|
|
\\int main(int argc, char**argv) {
|
|
\\ __v8qi signed_vector = { 1, 2, 3, 4, -1, -2, -3,-4};
|
|
\\
|
|
\\ uint64_t big_int = (uint64_t) signed_vector;
|
|
\\ if (big_int != 0x01020304FFFEFDFCULL && big_int != 0xFCFDFEFF04030201ULL) abort();
|
|
\\ __v8qu unsigned_vector = (__v8qu) big_int;
|
|
\\ for (int i = 0; i < 8; i++) {
|
|
\\ if (unsigned_vector[i] != (uint8_t)signed_vector[i] && unsigned_vector[i] != (uint8_t)signed_vector[7 - i]) abort();
|
|
\\ }
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("break from switch statement. Issue #8387",
|
|
\\#include <stdlib.h>
|
|
\\int switcher(int x) {
|
|
\\ switch (x) {
|
|
\\ case 0: // no braces
|
|
\\ x += 1;
|
|
\\ break;
|
|
\\ case 1: // conditional break
|
|
\\ if (x == 1) {
|
|
\\ x += 1;
|
|
\\ break;
|
|
\\ }
|
|
\\ x += 100;
|
|
\\ case 2: { // braces with fallthrough
|
|
\\ x += 1;
|
|
\\ }
|
|
\\ case 3: // fallthrough to return statement
|
|
\\ x += 1;
|
|
\\ case 42: { // random out of order case
|
|
\\ x += 1;
|
|
\\ return x;
|
|
\\ }
|
|
\\ case 4: { // break within braces
|
|
\\ x += 1;
|
|
\\ break;
|
|
\\ }
|
|
\\ case 5:
|
|
\\ x += 1; // fallthrough to default
|
|
\\ default:
|
|
\\ x += 1;
|
|
\\ }
|
|
\\ return x;
|
|
\\}
|
|
\\int main(void) {
|
|
\\ int expected[] = {1, 2, 5, 5, 5, 7, 7};
|
|
\\ for (int i = 0; i < sizeof(expected) / sizeof(int); i++) {
|
|
\\ int res = switcher(i);
|
|
\\ if (res != expected[i]) abort();
|
|
\\ }
|
|
\\ if (switcher(42) != 43) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Cast to enum from larger integral type. Issue #6011",
|
|
\\#include <stdint.h>
|
|
\\#include <stdlib.h>
|
|
\\enum Foo { A, B, C };
|
|
\\static inline enum Foo do_stuff(void) {
|
|
\\ int64_t i = 1;
|
|
\\ return (enum Foo)i;
|
|
\\}
|
|
\\int main(void) {
|
|
\\ if (do_stuff() != B) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Render array LHS as grouped node if necessary",
|
|
\\#include <stdlib.h>
|
|
\\int main(void) {
|
|
\\ int arr[] = {40, 41, 42, 43};
|
|
\\ if ((arr + 1)[1] != 42) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("typedef with multiple names",
|
|
\\#include <stdlib.h>
|
|
\\typedef struct {
|
|
\\ char field;
|
|
\\} a_t, b_t;
|
|
\\
|
|
\\int main(void) {
|
|
\\ a_t a = { .field = 42 };
|
|
\\ b_t b = a;
|
|
\\ if (b.field != 42) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("__cleanup__ attribute",
|
|
\\#include <stdlib.h>
|
|
\\static int cleanup_count = 0;
|
|
\\void clean_up(int *final_value) {
|
|
\\ if (*final_value != cleanup_count++) abort();
|
|
\\}
|
|
\\void doit(void) {
|
|
\\ int a __attribute__ ((__cleanup__(clean_up))) __attribute__ ((unused)) = 2;
|
|
\\ int b __attribute__ ((__cleanup__(clean_up))) __attribute__ ((unused)) = 1;
|
|
\\ int c __attribute__ ((__cleanup__(clean_up))) __attribute__ ((unused)) = 0;
|
|
\\}
|
|
\\int main(void) {
|
|
\\ doit();
|
|
\\ if (cleanup_count != 3) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("enum used as boolean expression",
|
|
\\#include <stdlib.h>
|
|
\\enum FOO {BAR, BAZ};
|
|
\\int main(void) {
|
|
\\ enum FOO x = BAR;
|
|
\\ if (x) abort();
|
|
\\ if (!BAZ) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Flexible arrays",
|
|
\\#include <stdlib.h>
|
|
\\#include <stdint.h>
|
|
\\typedef struct { char foo; int bar; } ITEM;
|
|
\\typedef struct { size_t count; ITEM items[]; } ITEM_LIST;
|
|
\\typedef struct { unsigned char count; int items[]; } INT_LIST;
|
|
\\#define SIZE 10
|
|
\\int main(void) {
|
|
\\ ITEM_LIST *list = malloc(sizeof(ITEM_LIST) + SIZE * sizeof(ITEM));
|
|
\\ for (int i = 0; i < SIZE; i++) list->items[i] = (ITEM) {.foo = i, .bar = i + 1};
|
|
\\ const ITEM_LIST *const c_list = list;
|
|
\\ for (int i = 0; i < SIZE; i++) if (c_list->items[i].foo != i || c_list->items[i].bar != i + 1) abort();
|
|
\\ INT_LIST *int_list = malloc(sizeof(INT_LIST) + SIZE * sizeof(int));
|
|
\\ for (int i = 0; i < SIZE; i++) int_list->items[i] = i;
|
|
\\ const INT_LIST *const c_int_list = int_list;
|
|
\\ const int *const ints = int_list->items;
|
|
\\ for (int i = 0; i < SIZE; i++) if (ints[i] != i) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("enum with value that fits in c_uint but not c_int, issue #8003",
|
|
\\#include <stdlib.h>
|
|
\\enum my_enum {
|
|
\\ FORCE_UINT = 0xffffffff
|
|
\\};
|
|
\\int main(void) {
|
|
\\ if(FORCE_UINT != 0xffffffff) abort();
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("block-scope static variable shadows function parameter. Issue #8208",
|
|
\\#include <stdlib.h>
|
|
\\int func1(int foo) { return foo + 1; }
|
|
\\int func2(void) {
|
|
\\ static int foo = 5;
|
|
\\ return foo++;
|
|
\\}
|
|
\\int main(void) {
|
|
\\ if (func1(42) != 43) abort();
|
|
\\ if (func2() != 5) abort();
|
|
\\ if (func2() != 6) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("nested same-name static locals",
|
|
\\#include <stdlib.h>
|
|
\\int func(int val) {
|
|
\\ static int foo;
|
|
\\ if (foo != val) abort();
|
|
\\ {
|
|
\\ foo += 1;
|
|
\\ static int foo = 2;
|
|
\\ if (foo != val + 2) abort();
|
|
\\ foo += 1;
|
|
\\ }
|
|
\\ return foo;
|
|
\\}
|
|
\\int main(void) {
|
|
\\ int foo = 1;
|
|
\\ if (func(0) != 1) abort();
|
|
\\ if (func(1) != 2) abort();
|
|
\\ if (func(2) != 3) abort();
|
|
\\ if (foo != 1) abort();
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Enum constants are assigned correct type. Issue #9153",
|
|
\\enum A { A0, A1=0xFFFFFFFF };
|
|
\\enum B { B0=-1, B1=0xFFFFFFFF };
|
|
\\enum C { C0=-1, C1=0 };
|
|
\\enum D { D0, D1=0xFFFFFFFFFFL };
|
|
\\enum E { E0=-1, E1=0xFFFFFFFFFFL };
|
|
\\int main(void) {
|
|
\\ signed char a0 = A0, a1 = A1;
|
|
\\ signed char b0 = B0, b1 = B1;
|
|
\\ signed char c0 = C0, c1 = C1;
|
|
\\ signed char d0 = D0, d1 = D1;
|
|
\\ signed char e0 = E0, e1 = E1;
|
|
\\ return 0;
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Enum constant matches enum name; multiple enumerations with same value",
|
|
\\#include <stdlib.h>
|
|
\\enum FOO {
|
|
\\ FOO = 1,
|
|
\\ BAR = 2,
|
|
\\ BAZ = 1,
|
|
\\};
|
|
\\int main(void) {
|
|
\\ enum FOO x = BAZ;
|
|
\\ if (x != 1) abort();
|
|
\\ if (x != BAZ) abort();
|
|
\\ if (x != FOO) abort();
|
|
\\}
|
|
, "");
|
|
|
|
cases.add("Scoped enums",
|
|
\\#include <stdlib.h>
|
|
\\int main(void) {
|
|
\\ enum Foo { A, B, C };
|
|
\\ enum Foo a = B;
|
|
\\ if (a != B) abort();
|
|
\\ if (a != 1) abort();
|
|
\\ {
|
|
\\ enum Foo { A = 5, B = 6, C = 7 };
|
|
\\ enum Foo a = B;
|
|
\\ if (a != B) abort();
|
|
\\ if (a != 6) abort();
|
|
\\ }
|
|
\\ if (a != B) abort();
|
|
\\ if (a != 1) abort();
|
|
\\}
|
|
, "");
|
|
}
|