Commit 45d220cac6e9dbb130b48554915233672c240b7b | zig

Implement __builtin_expect so C code that uses assert() can be translated.

2 files changed, 29 insertions(+), 0 deletions(-)

lib/std/c/builtins.zig+6

...	@@ -182,3 +182,9 @@ pub fn __builtin_memcpy(	...	@@ -182,3 +182,9 @@ pub fn __builtin_memcpy(
182	@memcpy(dst_cast, src_cast, len);	182	@memcpy(dst_cast, src_cast, len);
183	return dst;	183	return dst;
184	}	184	}
		185
		186	/// The return value of __builtin_expect is `expr`. `c` is the expected value
		187	/// of `expr` and is used as a hint to the compiler in C. Here it is unused.
		188	pub fn __builtin_expect(expr: c_long, c: c_long) callconv(.Inline) c_long {
		189	return expr;
		190	}

test/run_translated_c.zig+23

...	@@ -1106,4 +1106,27 @@ pub fn addCases(cases: *tests.RunTranslatedCContext) void {	...	@@ -1106,4 +1106,27 @@ pub fn addCases(cases: *tests.RunTranslatedCContext) void {
1106	\\ return 0;	1106	\\ return 0;
1107	\\}	1107	\\}
1108	, "");	1108	, "");
		1109
		1110	cases.add("handle assert.h",
		1111	\\#include <assert.h>
		1112	\\int main() {
		1113	\\ int x = 1;
		1114	\\ int *xp = &x;
		1115	\\ assert(1);
		1116	\\ assert(x != 0);
		1117	\\ assert(xp);
		1118	\\ assert(*xp);
		1119	\\ return 0;
		1120	\\}
		1121	, "");
		1122
		1123	cases.add("NDEBUG disables assert",
		1124	\\#define NDEBUG
		1125	\\#include <assert.h>
		1126	\\int main() {
		1127	\\ assert(0);
		1128	\\ assert(NULL);
		1129	\\ return 0;
		1130	\\}
		1131	, "");
1109	}	1132	}