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From 4cd069d0ef876dc1053d09c9785a6cd451061f19 Mon Sep 17 00:00:00 2001 |
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From: Aliaksey Kandratsenka <[email protected]> |
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Date: Mon, 22 May 2017 03:18:11 -0700 |
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Subject: [PATCH] Use hidden visibility for TCMallocGetenvSafe |
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Because otherwise it might be unsafe to call it from ifunc |
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handler (when non-lazy symbol binding is in effect). |
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--- |
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src/base/sysinfo.cc | 4 ++-- |
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1 file changed, 2 insertions(+), 2 deletions(-) |
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diff --git a/src/base/sysinfo.cc b/src/base/sysinfo.cc |
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index 36f7067..b03b719 100644 |
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--- a/src/base/sysinfo.cc |
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+++ b/src/base/sysinfo.cc |
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@@ -152,7 +152,7 @@ static size_t slow_strlen(const char *s) { |
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// system calls to read the file, and thus avoid setting errno. |
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// /proc/self/environ has a limit of how much data it exports (around |
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// 8K), so it's not an ideal solution. |
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-const char* GetenvBeforeMain(const char* name) { |
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+ATTRIBUTE_HIDDEN const char* GetenvBeforeMain(const char* name) { |
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const int namelen = slow_strlen(name); |
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#if defined(HAVE___ENVIRON) // if we have it, it's declared in unistd.h |
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if (__environ) { // can exist but be NULL, if statically linked |
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@@ -201,7 +201,7 @@ const char* GetenvBeforeMain(const char* name) { |
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} |
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extern "C" { |
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- const char* TCMallocGetenvSafe(const char* name) { |
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+ ATTRIBUTE_HIDDEN const char* TCMallocGetenvSafe(const char* name) { |
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return GetenvBeforeMain(name); |
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} |
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} |
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-- |
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2.11.0 |
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