diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/torture/alias-1.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/torture/alias-1.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/torture/alias-1.c b/gcc-4.9/gcc/testsuite/gcc.dg/torture/alias-1.c new file mode 100644 index 000000000..92b880990 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/torture/alias-1.c @@ -0,0 +1,39 @@ +/* { dg-do run } */ +/* { dg-options "-fschedule-insns" } */ +/* { dg-require-effective-target scheduling } */ + +extern void abort (void) __attribute__((noreturn)); + +struct B { int a; int b;}; +struct wrapper { +union setconflict +{ + struct S { char one1; struct B b1; } s; + struct T { struct B b2; char two2; } t; +} a; +}; + +int +main () +{ + int sum = 0; + int i; + struct wrapper w; + struct B *p; + + p = &w.a.s.b1; + asm ("": "=r" (p):"0" (p)); + p->a = 0; + asm ("": "=r" (p):"0" (p)); + sum += p->a; + + p = &w.a.t.b2; + asm ("": "=r" (p):"0" (p)); + p->b = 1; + asm ("": "=r" (p):"0" (p)); + sum += p->b; + + if (sum != 1) + abort(); + return 0; +} |