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translate-c: properly handle enums used as boolean expressions

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This commit is contained in:
Evan Haas 2021-06-06 17:33:57 -07:00 committed by Veikka Tuominen
parent fc8791c133
commit fa6546ba74
3 changed files with 14 additions and 2 deletions
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3
src/translate_c.zig
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@ -1931,7 +1931,8 @@ fn finishBoolExpr(
},
.Enum => {
// node != 0
return Tag.not_equal.create(c.arena, .{ .lhs = node, .rhs = Tag.zero_literal.init() });
const int_val = try Tag.enum_to_int.create(c.arena, node);
return Tag.not_equal.create(c.arena, .{ .lhs = int_val, .rhs = Tag.zero_literal.init() });
},
.Elaborated => {
const elaborated_ty = @ptrCast(*const clang.ElaboratedType, ty);

11
test/run_translated_c.zig
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@ -1508,4 +1508,15 @@ pub fn addCases(cases: *tests.RunTranslatedCContext) void {
\\ 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;
\\}
, "");
}

2
test/translate_c.zig
View File

@ -2668,7 +2668,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ if (a != 0) return 0;
\\ if (b != 0) return 1;
\\ if (c != null) return 2;
\\ if (d != 0) return 3;
\\ if (@enumToInt(d) != 0) return 3;
\\ return 4;
\\}
});