[tsan] Use direct syscalls for internal_mmap and internal_munmap on OS X

On OS X, internal_mmap just uses mmap, which can invoke callbacks into libmalloc (e.g. when MallocStackLogging is enabled). This can subsequently call other intercepted functions, and this breaks our Darwin-specific ThreadState initialization. Let's use direct syscalls in internal_mmap and internal_munmap. Added a testcase.

Differential Revision: http://reviews.llvm.org/D18431



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@264259 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 19 insertions, 0 deletions

diff --git a/test/tsan/Darwin/malloc-stack-logging.cc b/test/tsan/Darwin/malloc-stack-logging.cc
new file mode 100644
index 000000000..447fcd1a9
--- /dev/null
+++ b/test/tsan/Darwin/malloc-stack-logging.cc
@@ -0,0 +1,19 @@
+// RUN: %clangxx_tsan -O1 %s -o %t
+// RUN: MallocStackLogging=1 %run %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+void *foo(void *p) {
+    return NULL;
+}
+
+int main() {
+    pthread_t t;
+    pthread_create(&t, NULL, foo, NULL);
+    pthread_join(t, NULL);
+    fprintf(stderr, "Done.\n");
+    return 0;
+}
+
+// CHECK: Done.