[compiler-rt] [compiler-rt][rtsan] Do not intercept [f]truncate64 for musl (PR #129331)

[via llvm-commits]

https://github.com/pirama-arumuga-nainar created https://github.com/llvm/llvm-project/pull/129331

Musl has 64-bit off_t by default and has macros that redefine [f]truncate64 to [f]truncate.

>From 504b33505d4faaa5674cbb3a6742ccf148085279 Mon Sep 17 00:00:00 2001
From: Pirama Arumuga Nainar <pirama at google.com>
Date: Fri, 28 Feb 2025 14:15:55 -0800
Subject: [PATCH] [compiler-rt][rtsan] Do not intercept [f]truncate64 for musl

Musl has 64-bit off_t by default and has macros that redefine
[f]truncate64 to [f]truncate.
---
 compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp b/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp
index d41af795db724..cd57107450a47 100644
--- a/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp
+++ b/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp
@@ -295,7 +295,7 @@ INTERCEPTOR(int, ftruncate, int fd, off_t length) {
   return REAL(ftruncate)(fd, length);
 }
 
-#if SANITIZER_LINUX
+#if SANITIZER_LINUX && !SANITIZER_MUSL
 INTERCEPTOR(int, truncate64, const char *pathname, off64_t length) {
   __rtsan_notify_intercepted_call("truncate64");
   return REAL(truncate64)(pathname, length);