[PATCH] D39626: [Sanitizers] Check pthread_setcancel{state|type} interceptor arguments for != nullptr.

[Aleksey Shlyapnikov via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL317494: [Sanitizers] Check pthread_setcancel{state|type} interceptor arguments for !=… (authored by alekseyshl).

Repository:
  rL LLVM

https://reviews.llvm.org/D39626

Files:
  compiler-rt/trunk/lib/sanitizer_common/sanitizer_common_interceptors.inc


Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_common_interceptors.inc
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -5835,16 +5835,16 @@
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcancelstate, state, oldstate);
   int res = REAL(pthread_setcancelstate)(state, oldstate);
-  if (res == 0)
+  if (res == 0 && oldstate != nullptr)
     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldstate, sizeof(*oldstate));
   return res;
 }
 
 INTERCEPTOR(int, pthread_setcanceltype, int type, int *oldtype) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcanceltype, type, oldtype);
   int res = REAL(pthread_setcanceltype)(type, oldtype);
-  if (res == 0)
+  if (res == 0 && oldtype != nullptr)
     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldtype, sizeof(*oldtype));
   return res;
 }


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