libsanitizer: Cherry-pick LLVM release/13.x commit d96358a28193

Cherry-pick from LLVM release/13.x branch:

commit d96358a2819399a2abb60ad3b26444ab7b4409cf
Author: Michał Górny <mgorny@moritz.systems>
Date:   Mon Dec 13 22:28:26 2021 +0100

    [compiler-rt] Increase kDlsymAllocPoolSize to fix test failures

    Increase kDlsymAllocPoolSize on the release branch as discussed on bug
    51620, as an alternative to backporting
    cb0e14ce6dcdd614a7207f4ce6fcf81a164471ab and its dependencies.
    The minimum size is 8192, as needed for the following test to pass:

      AddressSanitizer-i386-linux :: TestCases/Linux/long-object-path.cpp

    Fixes #51620

	PR sanitizer/102911
	* asan/asan_malloc_linux.cpp (kDlsymAllocPoolSize): Set it to
	8192 on Linux.

(cherry picked from commit 8c0f58cd71ec3afcce5abf10c750ec494e88232b)

diff --git a/libsanitizer/asan/asan_malloc_linux.cpp b/libsanitizer/asan/asan_malloc_linux.cpp
index faa8968a5d009208edd051cf6b7ac7940bffa967..efd0cfc74b16644dfa1f9a77c7db0919c9eead59 100644 (file)
--- a/libsanitizer/asan/asan_malloc_linux.cpp
+++ b/libsanitizer/asan/asan_malloc_linux.cpp
@@ -31,7 +31,7 @@ using namespace __asan;
 
 static uptr allocated_for_dlsym;
 static uptr last_dlsym_alloc_size_in_words;
-static const uptr kDlsymAllocPoolSize = SANITIZER_RTEMS ? 4096 : 1024;
+static const uptr kDlsymAllocPoolSize = SANITIZER_RTEMS ? 4096 : 8192;
 static uptr alloc_memory_for_dlsym[kDlsymAllocPoolSize];
 
 static INLINE bool IsInDlsymAllocPool(const void *ptr) {