[PATCH] D42884: Prevent recursive MSan interceptors in fgets(3)
Kamil Rytarowski via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Sat Feb 3 10:12:26 PST 2018
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/D42884
Files:
lib/msan/msan_interceptors.cc
Index: lib/msan/msan_interceptors.cc
===================================================================
--- lib/msan/msan_interceptors.cc
+++ lib/msan/msan_interceptors.cc
@@ -779,6 +779,7 @@
INTERCEPTOR(char *, fgets, char *s, int size, void *stream) {
ENSURE_MSAN_INITED();
+ InterceptorScope interceptor_scope;
char *res = REAL(fgets)(s, size, stream);
if (res)
__msan_unpoison(s, REAL(strlen)(s) + 1);
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