1 files changed, 53 insertions, 0 deletions
diff --git a/test/tsan/java_move_overlap_race.cc b/test/tsan/java_move_overlap_race.cc
new file mode 100644
index 000000000000..2b3769be6117
--- /dev/null
+++ b/test/tsan/java_move_overlap_race.cc
@@ -0,0 +1,53 @@
+// RUN: %clangxx_tsan -O1 %s -o %t
+// RUN: %deflake %run %t | FileCheck %s
+// RUN: %deflake %run %t arg | FileCheck %s
+#include "java.h"
+
+jptr varaddr1_old;
+jptr varaddr2_old;
+jptr varaddr1_new;
+jptr varaddr2_new;
+
+void *Thread(void *p) {
+  sleep(1);
+  *(int*)varaddr1_new = 43;
+  *(int*)varaddr2_new = 43;
+  return 0;
+}
+
+int main(int argc, char **argv) {
+  int const kHeapSize = 1024 * 1024;
+  void *jheap = malloc(kHeapSize);
+  jheap = (char*)jheap + 8;
+  __tsan_java_init((jptr)jheap, kHeapSize);
+  const int kBlockSize = 64;
+  int const kMove = 32;
+  varaddr1_old = (jptr)jheap;
+  varaddr2_old = (jptr)jheap + kBlockSize - 1;
+  varaddr1_new = varaddr1_old + kMove;
+  varaddr2_new = varaddr2_old + kMove;
+  if (argc > 1) {
+    // Move memory backwards.
+    varaddr1_old += kMove;
+    varaddr2_old += kMove;
+    varaddr1_new -= kMove;
+    varaddr2_new -= kMove;
+  }
+  __tsan_java_alloc(varaddr1_old, kBlockSize);
+
+  pthread_t th;
+  pthread_create(&th, 0, Thread, 0);
+
+  *(int*)varaddr1_old = 43;
+  *(int*)varaddr2_old = 43;
+
+  __tsan_java_move(varaddr1_old, varaddr1_new, kBlockSize);
+  pthread_join(th, 0);
+  __tsan_java_free(varaddr1_new, kBlockSize);
+  printf("DONE\n");
+  return __tsan_java_fini();
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK: DONE