From: Vitaly Buka <vitalybuka@google.com>
Date: Wed, 24 Nov 2021 04:05:25 +0000 (-0800)
Subject: [sanitizer] Fail instead of crash without real_pthread_create
X-Git-Tag: upstream/15.0.7~24929
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=55792b5ac44e4c0d3a8feb8a793d60d58e38cf20;p=platform%2Fupstream%2Fllvm.git

[sanitizer] Fail instead of crash without real_pthread_create
---

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
index 596037d..ad70d8f 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
@@ -1760,6 +1760,8 @@ HandleSignalMode GetHandleSignalMode(int signum) {
 
 #if !SANITIZER_GO
 void *internal_start_thread(void *(*func)(void *arg), void *arg) {
+  if (&real_pthread_create == 0)
+    return nullptr;
   // Start the thread with signals blocked, otherwise it can steal user signals.
   ScopedBlockSignals block(nullptr);
   void *th;