[compiler-rt] r324496 - [asan] Fix filename size on linux platforms.

[Hans Wennborg via llvm-commits]

Merged to 6.0 in r324506.

On Wed, Feb 7, 2018 at 7:27 PM, Yvan Roux via llvm-commits
<llvm-commits at lists.llvm.org> wrote:
> Author: yroux
> Date: Wed Feb  7 10:27:25 2018
> New Revision: 324496
>
> URL: http://llvm.org/viewvc/llvm-project?rev=324496&view=rev
> Log:
> [asan] Fix filename size on linux platforms.
>
> 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
>
> Modified:
>     compiler-rt/trunk/lib/asan/asan_linux.cc
>
> Modified: compiler-rt/trunk/lib/asan/asan_linux.cc
> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/asan/asan_linux.cc?rev=324496&r1=324495&r2=324496&view=diff
> ==============================================================================
> --- compiler-rt/trunk/lib/asan/asan_linux.cc (original)
> +++ compiler-rt/trunk/lib/asan/asan_linux.cc Wed Feb  7 10:27:25 2018
> @@ -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)) {
>
>
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