From fad7e4d70665a228f23761cdffe5da674ca768be Mon Sep 17 00:00:00 2001 From: "Paul E. Murphy" Date: Tue, 19 Jan 2016 13:42:44 -0600 Subject: Fix nptl/tst-setuid3.c pthread_barrier_wait can return either PTHREAD_BARRIER_SERIAL_THREAD or 0. Posix makes no guarantees about which thread return the unique value. Additionally, pthread_join was not called despite seemingly checking for the error. --- nptl/tst-setuid3.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) (limited to 'nptl/tst-setuid3.c') diff --git a/nptl/tst-setuid3.c b/nptl/tst-setuid3.c index e017934f8b..40dbb2a62c 100644 --- a/nptl/tst-setuid3.c +++ b/nptl/tst-setuid3.c @@ -33,14 +33,21 @@ static pthread_barrier_t barrier2; #define FAIL_ERR(fmt, ...) \ do { printf ("FAIL: " fmt ": %m\n", __VA_ARGS__); _exit (1); } while (0) +/* True if x is not a successful return code from pthread_barrier_wait. */ +static inline bool +is_invalid_barrier_ret (int x) +{ + return x != 0 && x != PTHREAD_BARRIER_SERIAL_THREAD; +} + static void * thread_func (void *ctx __attribute__ ((unused))) { int ret = pthread_barrier_wait (&barrier1); - if (ret != PTHREAD_BARRIER_SERIAL_THREAD && ret != 0) + if (is_invalid_barrier_ret (ret)) FAIL ("pthread_barrier_wait (barrier1) (on thread): %d", ret); ret = pthread_barrier_wait (&barrier2); - if (ret != PTHREAD_BARRIER_SERIAL_THREAD && ret != 0) + if (is_invalid_barrier_ret (ret)) FAIL ("pthread_barrier_wait (barrier2) (on thread): %d", ret); return NULL; } @@ -86,7 +93,7 @@ do_test (void) /* Ensure that the thread is running properly. */ ret = pthread_barrier_wait (&barrier1); - if (ret != 0) + if (is_invalid_barrier_ret (ret)) FAIL ("pthread_barrier_wait (barrier1): %d", ret); setuid_failure (2); @@ -97,10 +104,11 @@ do_test (void) /* Shutdown. */ ret = pthread_barrier_wait (&barrier2); - if (ret != PTHREAD_BARRIER_SERIAL_THREAD && ret != 0) + if (is_invalid_barrier_ret (ret)) FAIL ("pthread_barrier_wait (barrier2): %d", ret); - if (ret != PTHREAD_BARRIER_SERIAL_THREAD && ret != 0) + ret = pthread_join (thread, NULL); + if (ret != 0) FAIL ("pthread_join: %d", ret); return 0; -- cgit v1.2.3-65-gdbad