test/CodeGen/transparent-union.c

   1 // RUN: %clang_cc1 -Werror -triple i386-unknown-unknown -emit-llvm -o %t %s
   2 // RUN: FileCheck < %t %s
   3 //
   4 // FIXME: Note that we don't currently get the ABI right here. f0() should be
   5 // f0(i8*).
   6
   7 typedef union {
   8   void *f0;
   9 } transp_t0 __attribute__((transparent_union));
  10
  11 void f0(transp_t0 obj);
  12
  13 // CHECK: define void @f1_0(i32* %a0)
  14 // CHECK:  call void @f0(%union.transp_t0* byval %{{.*}})
  15 // CHECK:  call void %{{.*}}(i8* %{{[a-z0-9]*}})
  16 // CHECK: }
  17 void f1_0(int *a0) {
  18   void (*f0p)(void *) = f0;
  19   f0(a0);
  20   f0p(a0);
  21 }
  22
  23 void f1_1(int *a0) {
  24   f0((transp_t0) { a0 });
  25 }