diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/20041106-1.c')
-rw-r--r-- | gcc/testsuite/gcc.dg/20041106-1.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/20041106-1.c b/gcc/testsuite/gcc.dg/20041106-1.c new file mode 100644 index 000000000..f83e835ed --- /dev/null +++ b/gcc/testsuite/gcc.dg/20041106-1.c @@ -0,0 +1,31 @@ +/* { dg-do run { target *-*-linux* *-*-solaris* } } */ +/* { dg-options -O2 } */ + +#include <sys/types.h> +#include <sys/mman.h> +#include <unistd.h> +#include <stdlib.h> + +struct S { long x __attribute__((packed)); }; /* { dg-warning "attribute ignored" "" { target default_packed } } */ +volatile long sink; + +void foo (struct S *s) +{ + sink = s->x; +} + +int main () +{ + size_t ps = getpagesize (); + char *ptr, *page; + struct S *s; + + ptr = malloc (3*ps); + page = (char *)(((size_t)ptr + (ps - 1)) & -ps); + munmap (page + ps, ps); + + s = (struct S *)(page + ps - sizeof(struct S)); + foo(s); + + return 0; +} |