From: Andrew Krieger <andrew.krieger@oculus.com>
Date: Tue, 29 Aug 2017 05:34:42 +0000 (-0700)
Subject: Fix potentially uninitialized struct used on MSVC
X-Git-Tag: v2017.09.04.00~14
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e804df264c8e311d69244916977964f06243a614;p=folly.git

Fix potentially uninitialized struct used on MSVC

Summary:
MSVC warns this might be used but uninitialized. Force
the struct to be zero initialized.

Reviewed By: yfeldblum

Differential Revision: D5585320

fbshipit-source-id: 9454a2a4a66c7689f42b1eb211dc57f5d3b88fea
---

diff --git a/folly/SharedMutex.h b/folly/SharedMutex.h
index 0968f5ba..b6a1a263 100644
--- a/folly/SharedMutex.h
+++ b/folly/SharedMutex.h
@@ -850,6 +850,7 @@ class SharedMutexImpl {
                             WaitContext& ctx) {
 #ifdef RUSAGE_THREAD
     struct rusage usage;
+    std::memset(&usage, 0, sizeof(usage));
     long before = -1;
 #endif
     for (uint32_t yieldCount = 0; yieldCount < kMaxSoftYieldCount;
@@ -1005,6 +1006,7 @@ class SharedMutexImpl {
 
 #ifdef RUSAGE_THREAD
     struct rusage usage;
+    std::memset(&usage, 0, sizeof(usage));
     long before = -1;
 #endif
     for (uint32_t yieldCount = 0; yieldCount < kMaxSoftYieldCount;