Nixyri/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2024-11-27 06:40:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

translate-c: Add tests for packed unions

Browse Source 
Was missing test coverage before this (although it was suppored)
This commit is contained in:
Techcable 2022-10-01 01:31:17 -07:00
parent 5b689d389f
commit a560af9656
No known key found for this signature in database
GPG Key ID: D7B98ADFF827CD17
1 changed files with 68 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
test/translate_c.zig
View File

@ -1391,6 +1391,74 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub const Foo = union_Foo;
});
cases.add("packed union - simple",
\\union Foo {
\\ char x;
\\ double y;
\\} __attribute__((packed));
, &[_][]const u8{
\\pub const union_Foo = extern union {
\\ x: u8 align(1),
\\ y: f64 align(1),
\\};
,
\\pub const Foo = union_Foo;
});
cases.add("packed union - nested unpacked",
\\union Foo{
\\ char x;
\\ double y;
\\ struct {
\\ char a;
\\ int b;
\\ } z;
\\} __attribute__((packed));
, &[_][]const u8{
// NOTE: The nested struct is *not* packed/aligned,
// even though the parent struct is
// this is consistent with GCC docs
\\const struct_unnamed_1 = extern struct {
\\ a: u8,
\\ b: c_int,
\\};
,
\\pub const union_Foo = extern union {
\\ x: u8 align(1),
\\ y: f64 align(1),
\\ z: struct_unnamed_1 align(1),
\\};
,
\\pub const Foo = union_Foo;
});
cases.add("packed union - nested packed",
\\union Foo{
\\ char x;
\\ double y;
\\ struct {
\\ char a;
\\ int b;
\\ } __attribute__((packed)) z;
\\} __attribute__((packed));
, &[_][]const u8{
// in order for the nested struct to be packed, it must
// have an independent packed declaration on
// the nested type (see GCC docs for details)
\\const struct_unnamed_1 = extern struct {
\\ a: u8 align(1),
\\ b: c_int align(1),
\\};
,
\\pub const union_Foo = extern union {
\\ x: u8 align(1),
\\ y: f64 align(1),
\\ z: struct_unnamed_1 align(1),
\\};
,
\\pub const Foo = union_Foo;
});
cases.add("string literal",
\\const char *foo(void) {
\\ return "bar";