Fixed an unintended data race in the bar_trivial test program.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@9325 a5019735-40e9-0310-863c-91ae7b9d1cf9

1 files changed, 4 insertions, 2 deletions

diff --git a/helgrind/tests/bar_trivial.c b/helgrind/tests/bar_trivial.c
index 8c221ae8e..26a6b37c7 100644
--- a/helgrind/tests/bar_trivial.c
+++ b/helgrind/tests/bar_trivial.c
@@ -16,7 +16,7 @@ pthread_barrier_t bar;
 
 void* child_fn ( void* arg )
 {
-   long r, n = (long)arg;
+   long r, n = *(long*)arg;
 
    if (n == 1) x++;
 
@@ -36,12 +36,14 @@ int main ( void )
 {
    long i, r;
    pthread_t thr[NTHR];
+   long thread_arg[NTHR];
 
    r = pthread_barrier_init(&bar, NULL, NTHR);
    assert(!r);
 
    for (i = 0; i < NTHR; i++) {
-      r = pthread_create(&thr[i], NULL, child_fn, (void*)i);
+      thread_arg[i] = i;
+      r = pthread_create(&thr[i], NULL, child_fn, &(thread_arg[i]));
       assert(!r);
    }