clang/test/CodeGen/2007-05-29-UnionCopy.c

   1 // RUN: %clang_cc1 -emit-llvm -o - %s | grep memcpy
   2 // PR1421
   3
   4 struct A {
   5   char c;
   6   int i;
   7 };
   8
   9 struct B {
  10   int c;
  11   unsigned char x;
  12 };
  13
  14 union U { struct A a; struct B b; };
  15
  16 void check(union U *u, union U *v) {
  17   *u = *v;
  18 }