xref: /aosp_15_r20/external/clang/test/CodeGen/2002-08-02-UnionTest.c (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // RUN: %clang_cc1 -emit-llvm %s  -o /dev/null
2*67e74705SXin Li 
3*67e74705SXin Li /* In this testcase, the return value of foo() is being promoted to a register
4*67e74705SXin Li  * which breaks stuff
5*67e74705SXin Li  */
6*67e74705SXin Li int printf(const char * restrict format, ...);
7*67e74705SXin Li 
8*67e74705SXin Li union X { char X; void *B; int a, b, c, d;};
9*67e74705SXin Li 
foo()10*67e74705SXin Li union X foo() {
11*67e74705SXin Li   union X Global;
12*67e74705SXin Li   Global.B = (void*)123;   /* Interesting part */
13*67e74705SXin Li   return Global;
14*67e74705SXin Li }
15*67e74705SXin Li 
main()16*67e74705SXin Li int main() {
17*67e74705SXin Li   union X test = foo();
18*67e74705SXin Li   printf("0x%p", test.B);
19*67e74705SXin Li }
20