From 170a8c12843db3dc10b544c0fc5b3f19566ee940 Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Wed, 28 Jul 2021 19:58:52 +0200
Subject: [PATCH] sanitizer_common: avoid compiler-interted memset in deadlock
 detector

Compilers tends to insert memset/memcpy for some struct/array operations,
and these don't play well inside of sanitizer runtimes.
Avoiding these calls was the intention behind internal_memset.
Remove the leftover ={} that can result in memset call.

Reviewed By: vitalybuka, pgousseau

Differential Revision: https://reviews.llvm.org/D106978
---
 compiler-rt/lib/sanitizer_common/sanitizer_mutex.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_mutex.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_mutex.cpp
index 46f1d0279ca1..1c177d8e7cca 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_mutex.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_mutex.cpp
@@ -73,7 +73,7 @@ void DebugMutexInit() {
   // Build adjacency matrix.
   bool leaf[kMutexTypeMax];
   internal_memset(&leaf, 0, sizeof(leaf));
-  int cnt[kMutexTypeMax] = {};
+  int cnt[kMutexTypeMax];
   internal_memset(&cnt, 0, sizeof(cnt));
   for (int t = 0; t < kMutexTypeMax; t++) {
     mutex_type_count = t;