tsan: even if races between atomic and plain memory accesses are turned off (report_atomic_races=0),

still report races between atomic accesses and free().

llvm-svn: 174175

3 files changed, 62 insertions, 0 deletions

diff --git a/compiler-rt/lib/tsan/lit_tests/atomic_free.cc b/compiler-rt/lib/tsan/lit_tests/atomic_free.cc
new file mode 100644
index 00000000000..ba9bd5ac4ae
--- /dev/null
+++ b/compiler-rt/lib/tsan/lit_tests/atomic_free.cc
@@ -0,0 +1,19 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <unistd.h>
+
+void *Thread(void *a) {
+  __atomic_fetch_add((int*)a, 1, __ATOMIC_SEQ_CST);
+  return 0;
+}
+
+int main() {
+  int *a = new int(0);
+  pthread_t t;
+  pthread_create(&t, 0, Thread, a);
+  sleep(1);
+  delete a;
+  pthread_join(t, 0);
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
diff --git a/compiler-rt/lib/tsan/lit_tests/atomic_free2.cc b/compiler-rt/lib/tsan/lit_tests/atomic_free2.cc
new file mode 100644
index 00000000000..5517bf7ce90
--- /dev/null
+++ b/compiler-rt/lib/tsan/lit_tests/atomic_free2.cc
@@ -0,0 +1,19 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <unistd.h>
+
+void *Thread(void *a) {
+  sleep(1);
+  __atomic_fetch_add((int*)a, 1, __ATOMIC_SEQ_CST);
+  return 0;
+}
+
+int main() {
+  int *a = new int(0);
+  pthread_t t;
+  pthread_create(&t, 0, Thread, a);
+  delete a;
+  pthread_join(t, 0);
+}
+
+// CHECK: WARNING: ThreadSanitizer: heap-use-after-free
diff --git a/compiler-rt/lib/tsan/lit_tests/race_on_mutex2.c b/compiler-rt/lib/tsan/lit_tests/race_on_mutex2.c
new file mode 100644
index 00000000000..84bef75a344
--- /dev/null
+++ b/compiler-rt/lib/tsan/lit_tests/race_on_mutex2.c
@@ -0,0 +1,24 @@
+// RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <unistd.h>
+
+void *Thread(void *x) {
+  pthread_mutex_lock((pthread_mutex_t*)x);
+  pthread_mutex_unlock((pthread_mutex_t*)x);
+  return 0;
+}
+
+int main() {
+  pthread_mutex_t Mtx;
+  pthread_mutex_init(&Mtx, 0);
+  pthread_t t;
+  pthread_create(&t, 0, Thread, &Mtx);
+  sleep(1);
+  pthread_mutex_destroy(&Mtx);
+  pthread_join(t, 0);
+  return 0;
+}
+
+// CHECK:      WARNING: ThreadSanitizer: data race