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Nikita Malyavin 4e1a6c0705 [msan] Add stat-family interceptors on Linux 
Add following interceptors on Linux: stat, lstat, fstat, fstatat.

This fixes use-of-uninitialized value on platforms with GLIBC 2.33+.
In particular: Arch Linux, Ubuntu hirsute/impish.

The tests should have also been failing during the release on the mentioned platforms, but I cannot find any related discussion.

Most likely, the regression was introduced by glibc commit [[ 8ed005daf0 | 8ed005daf0ab03e14250032 ]]:
all stat-family functions are now exported as shared functions.

Before, some of them (namely stat, lstat, fstat, fstatat) were provided as a part of libc_noshared.a and called their __xstat dopplegangers. This is still true for Debian Sid and earlier Ubuntu's. stat interceptors may be safely provided for them, no problem with that.

Closes https://github.com/google/sanitizers/issues/1452.
See also https://jira.mariadb.org/browse/MDEV-24841

Reviewed By: eugenis

Differential Revision: https://reviews.llvm.org/D111984
 		2021-10-20 17:14:43 -07:00
..
cmake Revert "[ORC-RT] Configure the ORC runtime for more architectures and platforms" 2021-10-20 15:32:06 -07:00
docs Prepare Compiler-RT for GnuInstallDirs, matching libcxx, document all 2021-07-13 15:21:41 +00:00
include [InstrProfData] Bump the raw profile version to 8 2021-10-05 09:57:56 -07:00
lib [msan] Add stat-family interceptors on Linux 2021-10-20 17:14:43 -07:00
test [HWASan] Use tagged-globals feature on x86. 2021-10-19 05:56:50 -07:00
tools [GWP-ASan] Add inbuilt options parser. 2021-01-15 12:57:05 -08:00
unittests [test] Fix asan dynamic unit tests with per-target runtime dirs 2021-10-14 16:47:25 -04:00
utils [compiler-rt] NFC: Fix trivial typo 2021-09-04 14:12:58 +05:30
www [compiler-rt] Document that builtins is known to work on OpenBSD. 2021-09-07 04:25:12 -04:00
.clang-tidy NFC: .clang-tidy: Inherit configs from parents to improve maintainability 2021-06-08 08:25:59 -07:00
.gitignore
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CMakeLists.txt [CMake] Cache the compiler-rt library search results 2021-10-18 14:44:07 -07:00
CODE_OWNERS.TXT
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CREDITS.TXT
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LICENSE.TXT
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README.txt
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README.txt 

Compiler-RT
================================

This directory and its subdirectories contain source code for the compiler
support routines.

Compiler-RT is open source software. You may freely distribute it under the
terms of the license agreement found in LICENSE.txt.

================================