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[asan] Fix filename size on linux platforms.

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This is a a fix for:
https://bugs.llvm.org/show_bug.cgi?id=35996

Use filename limits from system headers to be synchronized with what
LD_PRELOAD can handle.

Differential Revision: https://reviews.llvm.org/D42900

llvm-svn: 324496
This commit is contained in:
Yvan Roux 2018-02-07 18:27:25 +00:00
parent aaeab8d4ef
commit cae4970b34
1 changed files with 2 additions and 1 deletions
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3
compiler-rt/lib/asan/asan_linux.cc
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@ -32,6 +32,7 @@
#include <sys/types.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <limits.h>
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
@ -214,7 +215,7 @@ void AsanCheckIncompatibleRT() {
// the functions in dynamic ASan runtime instead of the functions in
// system libraries, causing crashes later in ASan initialization.
MemoryMappingLayout proc_maps(/*cache_enabled*/true);
char filename[128];
char filename[PATH_MAX];
MemoryMappedSegment segment(filename, sizeof(filename));
while (proc_maps.Next(&segment)) {
if (IsDynamicRTName(segment.filename)) {