[clang] [compiler-rt] [rtsan] Enable RealtimeSanitizer for FreeBSD (PR #125389)

[David CARLIER via cfe-commits]

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@@ -864,11 +864,18 @@ INTERCEPTOR(void *, pvalloc, size_t size) {
 #define RTSAN_MAYBE_INTERCEPT_PVALLOC
 #endif
 
+#if !SANITIZER_FREEBSD
+// enabling this interception on freebsd leads to infinite recursion
+// on pthread lib initialization
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devnexen wrote:

Unfortunately when mmap/calloc are hit rtsan seems already initialized, in that case internal_mmap is never called.

https://github.com/llvm/llvm-project/pull/125389