http://llvm.org/bugs/show_bug.cgi?id=20569
Bug ID: 20569
Summary: Clang miscompiles varargs function when targeting
x86_64-pc-win32
Product: clang
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
consider:
#include <assert.h>
#include <stdarg.h>
static const struct S {
int x[3];
} global = {{1, 2, 3}};
static void f(int arg, ...) {
va_list ap;
va_start(ap, arg);
struct S s = va_arg(ap, struct S);
assert(global.x[0] == s.x[0]);
va_end(ap);
}
int main() {
f(0, global);
return 0;
}
This test succeeds using gcc, clang and MSVC.
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