From: Andrii Grynenko <andrii@fb.com>
Date: Wed, 1 Mar 2017 18:35:36 +0000 (-0800)
Subject: Disable MemoryIdler::unmapUnusedStack with ASAN
X-Git-Tag: v2017.03.06.00~9
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=94a3d5d31413b318d8a978b003e0f93ddf44a617;p=folly.git

Disable MemoryIdler::unmapUnusedStack with ASAN

Summary: It doesn't work nicely with fake stacks (which are used with detect_stack_use_after_return).

Reviewed By: yfeldblum

Differential Revision: D4631995

fbshipit-source-id: f139041314f8f64c0cf0a15874d6a4710fb2a5b6
---

diff --git a/folly/detail/MemoryIdler.cpp b/folly/detail/MemoryIdler.cpp
index 12286855..129debdd 100644
--- a/folly/detail/MemoryIdler.cpp
+++ b/folly/detail/MemoryIdler.cpp
@@ -80,7 +80,7 @@ void MemoryIdler::flushLocalMallocCaches() {
 // and arithmetic (and bug compatibility) are not portable.  The set of
 // platforms could be increased if it was useful.
 #if (FOLLY_X64 || FOLLY_PPC64) && defined(_GNU_SOURCE) && \
-    defined(__linux__) && !FOLLY_MOBILE
+    defined(__linux__) && !FOLLY_MOBILE && !FOLLY_SANITIZE_ADDRESS
 
 static FOLLY_TLS uintptr_t tls_stackLimit;
 static FOLLY_TLS size_t tls_stackSize;