diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/pr69355.c')
-rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr69355.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr69355.c b/gcc/testsuite/gcc.dg/tree-ssa/pr69355.c new file mode 100644 index 00000000000..f515c211c99 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr69355.c @@ -0,0 +1,44 @@ +/* { dg-do run } */ +/* { dg-options "-O -fno-strict-aliasing" } */ + +struct S +{ + void *a; + long double b; +}; + +struct Z +{ + long long l; + short s; +} __attribute__((packed)); + +struct S __attribute__((noclone, noinline)) +foo (void *v, struct Z *z) +{ + struct S t; + t.a = v; + *(struct Z *) &t.b = *z; + return t; +} + +struct Z gz; + +int +main (int argc, char **argv) +{ + struct S s; + + if (sizeof (long double) < sizeof (struct Z)) + return 0; + + gz.l = 0xbeef; + gz.s = 0xab; + + s = foo ((void *) 0, &gz); + + if ((((struct Z *) &s.b)->l != gz.l) + || (((struct Z *) &s.b)->s != gz.s)) + __builtin_abort (); + return 0; +} |