test/FrontendC/2009-02-13-zerosize-union-field.c

   1 // RUN: %llvmgcc %s -m32 -S -o - | grep {i32 1} | count 1
   2 // RUN: %llvmgcc %s -m32 -S -o - | grep {i32 4} | count 2
   3 // XFAIL: powerpc
   4 //  Every printf has 'i32 0' for the GEP of the string; no point counting those.
   5 typedef unsigned int Foo __attribute__((aligned(32)));
   6 typedef union{Foo:0;}a;
   7 typedef union{int x; Foo:0;}b;
   8 extern int printf(const char*, ...);
   9 main() {
  10   printf("%ld\n", sizeof(a));
  11   printf("%ld\n", __alignof__(a));
  12   printf("%ld\n", sizeof(b));
  13   printf("%ld\n", __alignof__(b));
  14 }