Import compiler-rt trunk r224034.vendor/compiler-rt/compiler-rt-r224034

https://llvm.org/svn/llvm-project/compiler-rt/trunk@224034

1 files changed, 44 insertions, 0 deletions

diff --git a/test/tsan/deep_stack1.cc b/test/tsan/deep_stack1.cc
new file mode 100644
index 000000000000..1d00a0e856d5
--- /dev/null
+++ b/test/tsan/deep_stack1.cc
@@ -0,0 +1,44 @@
+// RUN: %clangxx_tsan -O1 %s -o %t -DORDER1 && %deflake %run %t | FileCheck %s
+// RUN: %clangxx_tsan -O1 %s -o %t -DORDER2 && %deflake %run %t | FileCheck %s
+#include <pthread.h>
+#include <stdio.h>
+#include <unistd.h>
+
+volatile int X;
+volatile int N;
+void (*volatile F)();
+
+static void foo() {
+  if (--N == 0)
+    X = 42;
+  else
+    F();
+}
+
+void *Thread(void *p) {
+#ifdef ORDER1
+  sleep(1);
+#endif
+  F();
+  return 0;
+}
+
+int main() {
+  N = 50000;
+  F = foo;
+  pthread_t t;
+  pthread_attr_t a;
+  pthread_attr_init(&a);
+  pthread_attr_setstacksize(&a, N * 256 + (1 << 20));
+  pthread_create(&t, &a, Thread, 0);
+#ifdef ORDER2
+  sleep(1);
+#endif
+  X = 43;
+  pthread_join(t, 0);
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK:    #100 foo
+// We must output suffucuently large stack (at least 100 frames)
+