[compiler-rt] [compiler-rt][ASan] Define SANITIZER_INTERCEPT_WCSNLEN (PR #164845)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: Zack Johnson (zacklj89)

<details>
<summary>Changes</summary>

Follow up to #<!-- -->162028

`SANITIZER_INTERCEPT_WCSNLEN` is not defined, so `internal_wcsnlen` is always used instead of using `REAL(wcsnlen)` if intercepted. 

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Full diff: https://github.com/llvm/llvm-project/pull/164845.diff


1 Files Affected:

- (modified) compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h (+1) 


``````````diff
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
index 88ecd7e16306a..ed60671014d5a 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
@@ -551,6 +551,7 @@ SANITIZER_WEAK_IMPORT void *aligned_alloc(__sanitizer::usize __alignment,
 #define SANITIZER_INTERCEPT_MALLOC_USABLE_SIZE (!SI_MAC && !SI_NETBSD)
 #define SANITIZER_INTERCEPT_MCHECK_MPROBE SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_WCSLEN 1
+#define SANITIZER_INTERCEPT_WCSNLEN 1
 #define SANITIZER_INTERCEPT_WCSCAT (SI_POSIX || SI_WINDOWS)
 #define SANITIZER_INTERCEPT_WCSDUP SI_POSIX
 #define SANITIZER_INTERCEPT_SIGNAL_AND_SIGACTION (!SI_WINDOWS && SI_NOT_FUCHSIA)

``````````

</details>


https://github.com/llvm/llvm-project/pull/164845