diff options
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/20111212-1.c | 34 |
2 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index c74c878cc43..dbe8ac619f5 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2011-12-12 Eric Botcazou <ebotcazou@adacore.com> + + * gcc.c-torture/execute/20111212-1.c: New test. + 2011-12-12 Jakub Jelinek <jakub@redhat.com> PR testsuite/51511 diff --git a/gcc/testsuite/gcc.c-torture/execute/20111212-1.c b/gcc/testsuite/gcc.c-torture/execute/20111212-1.c new file mode 100644 index 00000000000..c46e6e94636 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/20111212-1.c @@ -0,0 +1,34 @@ +/* PR tree-optimization/50569 */ +/* Reported by Paul Koning <pkoning@gcc.gnu.org> */ +/* Reduced testcase by Mikael Pettersson <mikpe@it.uu.se> */ + +struct event { + struct { + unsigned int sec; + } sent __attribute__((packed)); +}; + +void __attribute__((noinline,noclone)) frob_entry(char *buf) +{ + struct event event; + + __builtin_memcpy(&event, buf, sizeof(event)); + if (event.sent.sec < 64) { + event.sent.sec = -1U; + __builtin_memcpy(buf, &event, sizeof(event)); + } +} + +int main(void) +{ + union { + char buf[1 + sizeof(struct event)]; + int align; + } u; + + __builtin_memset(&u, 0, sizeof u); + + frob_entry(&u.buf[1]); + + return 0; +} |