gcc/testsuite/gcc.target/i386/pr39082-1.c

   1 /* PR target/39082 */
   2 /* { dg-do compile { target { ! { ia32 } } } } */
   3 /* { dg-options "-O2" } */
   4 /* { dg-additional-options "-mabi=sysv" { target x86_64-*-mingw* } } */
   5
   6 union un
   7 {
   8   long double x;
   9   int i;
  10 };
  11
  12 extern int bar1 (union un);
  13 extern union un bar2 (int);
  14
  15 int
  16 foo1 (union un u) /* { dg-message "note: the ABI of passing union with long double has changed in GCC 4.4" } */
  17 {
  18   bar1 (u);
  19   return u.i;
  20 }
  21
  22 int
  23 foo2 (void)
  24 {
  25   union un u;
  26   u.i = 1;
  27   return foo1 (u) + bar1 (u);
  28 }
  29
  30 int
  31 foo3 (int x)
  32 {
  33   union un u = bar2 (x);
  34   return u.i;
  35 }