20 lines · c
1// RUN: %clang_cc1 -emit-llvm %s -o /dev/null2 3/* In this testcase, the return value of foo() is being promoted to a register4 * which breaks stuff5 */6int printf(const char * restrict format, ...);7 8union X { char X; void *B; int a, b, c, d;};9 10union X foo(void) {11 union X Global;12 Global.B = (void*)123; /* Interesting part */13 return Global;14}15 16int main(void) {17 union X test = foo();18 printf("0x%p", test.B);19}20