vendor/compiler-rt/compiler-rt-release_370-r246257

1 files changed, 44 insertions, 0 deletions

diff --git a/test/tsan/java_symbolization.cc b/test/tsan/java_symbolization.cc
new file mode 100644
index 000000000000..aa5ec0c37558
--- /dev/null
+++ b/test/tsan/java_symbolization.cc
@@ -0,0 +1,44 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
+#include "java.h"
+#include <memory.h>
+
+extern "C" bool __tsan_symbolize_external(jptr pc,
+                                          char *func_buf, jptr func_siz,
+                                          char *file_buf, jptr file_siz,
+                                          int *line, int *col) {
+  if (pc == (1234 | kExternalPCBit)) {
+    memcpy(func_buf, "MyFunc", sizeof("MyFunc"));
+    memcpy(file_buf, "MyFile.java", sizeof("MyFile.java"));
+    *line = 1234;
+    *col = 56;
+    return true;
+  }
+  return false;
+}
+
+void *Thread(void *p) {
+  barrier_wait(&barrier);
+  __tsan_write1_pc((jptr)p, 1234 | kExternalPCBit);
+  return 0;
+}
+
+int main() {
+  barrier_init(&barrier, 2);
+  int const kHeapSize = 1024 * 1024;
+  jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
+  __tsan_java_init(jheap, kHeapSize);
+  const int kBlockSize = 16;
+  __tsan_java_alloc(jheap, kBlockSize);
+  pthread_t th;
+  pthread_create(&th, 0, Thread, (void*)jheap);
+  __tsan_write1_pc((jptr)jheap, 1234 | kExternalPCBit);
+  barrier_wait(&barrier);
+  pthread_join(th, 0);
+  __tsan_java_free(jheap, kBlockSize);
+  fprintf(stderr, "DONE\n");
+  return __tsan_java_fini();
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK:     #0 MyFunc MyFile.java:1234:56
+// CHECK: DONE