[PATCH] D128971: [BOLT] Avoid implicit memset in hugify

[Alexey Moksyakov via Phabricator via llvm-commits]

yavtuk updated this revision to Diff 441629.
yavtuk added a comment.

updated commit message


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D128971/new/

https://reviews.llvm.org/D128971

Files:
  bolt/runtime/hugify.cpp


Index: bolt/runtime/hugify.cpp
===================================================================
--- bolt/runtime/hugify.cpp
+++ bolt/runtime/hugify.cpp
@@ -27,7 +27,7 @@
 #ifdef MADV_HUGEPAGE
 /// Check whether the kernel supports THP via corresponding sysfs entry.
 static bool has_pagecache_thp_support() {
-  char buf[256] = {0};
+  char buf[256];
   const char *madviseStr = "always [madvise] never";
 
   int fd = __open("/sys/kernel/mm/transparent_hugepage/enabled",
@@ -35,6 +35,7 @@
   if (fd < 0)
     return false;
 
+  memSet(buf, 0, sizeof(buf));
   size_t res = __read(fd, buf, 256);
   if (res < 0)
     return false;


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