[compiler-rt] [tsan] Only intercept pthread_mutex_clocklock on Linux (PR #76220)

[Rainer Orth via llvm-commits]

https://github.com/rorth created https://github.com/llvm/llvm-project/pull/76220

`tsan_interceptors_posix.cpp` doesn't compile on FreeBSD 14.0/amd64:
```
In file included from /vol/llvm/src/llvm-project/local-freebsd/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:25:
/vol/llvm/src/llvm-project/local-freebsd/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp: In function ‘void __tsan::InitializeInterceptors()’:
/vol/llvm/src/llvm-project/local-freebsd/compiler-rt/lib/tsan/rtl/../../interception/interception.h:243:25: error: ‘real_pthread_mutex_clocklock’ is not a member of ‘__interception’; did you mean ‘real_pthread_mutex_unlock’?
```
Fixed by wrapping the `TSAN_INTERCEPT` invocation with `SANITIZER_LINUX` as is already done for the interceptor definition.

Tested on `amd64-pc-freebsd14.0`.

>From 2aa4b2ffbe02ee8c847f33470079520567782059 Mon Sep 17 00:00:00 2001
From: Rainer Orth <ro at gcc.gnu.org>
Date: Fri, 22 Dec 2023 10:00:37 +0100
Subject: [PATCH] [tsan] Only intercept pthread_mutex_clocklock on Linux
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

`tsan_interceptors_posix.cpp` doesn't compile on FreeBSD 14.0/amd64:
```
In file included from /vol/llvm/src/llvm-project/local-freebsd/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:25:
/vol/llvm/src/llvm-project/local-freebsd/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp: In function ‘void __tsan::InitializeInterceptors()’:
/vol/llvm/src/llvm-project/local-freebsd/compiler-rt/lib/tsan/rtl/../../interception/interception.h:243:25: error: ‘real_pthread_mutex_clocklock’ is not a member of ‘__interception’; did you mean ‘real_pthread_mutex_unlock’?
```
Fixed by wrapping the `TSAN_INTERCEPT` invocation with `SANITIZER_LINUX` as
is already done for the interceptor definition.

Tested on `amd64-pc-freebsd14.0`.
---
 compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp b/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp
index fdcba6e8ca7398..a9f6673ac44e90 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp
+++ b/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp
@@ -2918,7 +2918,9 @@ void InitializeInterceptors() {
   TSAN_INTERCEPT(pthread_mutex_trylock);
   TSAN_INTERCEPT(pthread_mutex_timedlock);
   TSAN_INTERCEPT(pthread_mutex_unlock);
+#if SANITIZER_LINUX
   TSAN_INTERCEPT(pthread_mutex_clocklock);
+#endif
 #if SANITIZER_GLIBC
 #  if !__GLIBC_PREREQ(2, 34)
   TSAN_INTERCEPT(__pthread_mutex_lock);