fix unguarded global variable access

1 files changed, 15 insertions, 4 deletions

diff --git a/tests/cleanup0.c b/tests/cleanup0.c
index 8de8c4b..77626eb 100644
--- a/tests/cleanup0.c
+++ b/tests/cleanup0.c
@@ -92,14 +92,21 @@ struct bag_t_ {
 
 static bag_t threadbag[NUMTHREADS + 1];
 
-static int pop_count = 0;
+typedef struct {
+  int i;
+  CRITICAL_SECTION cs;
+} sharedInt_t;
+
+static sharedInt_t pop_count = {0, {0}};
 
 static void
 increment_pop_count(void * arg)
 {
-  int * c = (int *) arg;
+  sharedInt_t * sI = (sharedInt_t *) arg;
 
-  (*c)++;
+  EnterCriticalSection(&sI->cs);
+  sI->i++;
+  LeaveCriticalSection(&sI->cs);
 }
 
 void *
@@ -140,6 +147,8 @@ main()
   int i;
   pthread_t t[NUMTHREADS + 1];
 
+  InitializeCriticalSection(&pop_count.cs);
+
   assert((t[0] = pthread_self()).p != NULL);
 
   for (i = 1; i <= NUMTHREADS; i++)
@@ -199,7 +208,9 @@ main()
 
   assert(!failed);
 
-  assert(pop_count == NUMTHREADS);
+  assert(pop_count.i == NUMTHREADS);
+
+  DeleteCriticalSection(&pop_count.cs);
 
   /*
    * Success.