[PATCH] D42883: Prevent recirsuve MSan interceptors in strftime(3) like functions

[Kamil Rytarowski via Phabricator via llvm-commits]

krytarowski created this revision.
krytarowski added reviewers: joerg, eugenis, vitalybuka.
krytarowski added a project: Sanitizers.

This corrects intercepting this call on NetBSD without false positives.

Sponsored by <The NetBSD Foundation>


Repository:
  rL LLVM

https://reviews.llvm.org/D42883

Files:
  lib/msan/msan_interceptors.cc


Index: lib/msan/msan_interceptors.cc
===================================================================
--- lib/msan/msan_interceptors.cc
+++ lib/msan/msan_interceptors.cc
@@ -514,6 +514,7 @@
 
 #define INTERCEPTOR_STRFTIME_BODY(char_type, ret_type, func, s, ...) \
   ENSURE_MSAN_INITED();                                              \
+  InterceptorScope interceptor_scope;                                \
   ret_type res = REAL(func)(s, __VA_ARGS__);                         \
   if (s) __msan_unpoison(s, sizeof(char_type) * (res + 1));          \
   return res;


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