1 // RUN: %clang_cc1 -emit-llvm %s  -o /dev/null
2 
3 /* In this testcase, the return value of foo() is being promoted to a register
4  * which breaks stuff
5  */
6 int printf(const char * restrict format, ...);
7 
8 union X { char X; void *B; int a, b, c, d;};
9 
foo()10 union X foo() {
11   union X Global;
12   Global.B = (void*)123;   /* Interesting part */
13   return Global;
14 }
15 
main()16 int main() {
17   union X test = foo();
18   printf("0x%p", test.B);
19 }
20