Add __lsan::ScopedInterceptorDisabler for strerror(3)

Summary:
strerror(3) on NetBSD uses internally TSD with a destructor that is never
fired for exit(3). It's correctly called for pthread_exit(3) scenarios.

This is a case when a leak on exit(3) is expected, unavoidable and harmless.

Reviewers: joerg, vitalybuka, dvyukov, mgorny

Reviewed By: vitalybuka

Subscribers: dmgreen, kristof.beyls, jfb, llvm-commits, #sanitizers

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D67337

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@372461 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/sanitizer_common/sanitizer_common_interceptors.inc b/lib/sanitizer_common/sanitizer_common_interceptors.inc
index 7ea896ef2..587b1ea22 100644
--- a/lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ b/lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -36,6 +36,7 @@
 //   COMMON_INTERCEPTOR_MMAP_IMPL
 //   COMMON_INTERCEPTOR_COPY_STRING
 //   COMMON_INTERCEPTOR_STRNDUP_IMPL
+//   COMMON_INTERCEPTOR_STRERROR
 //===----------------------------------------------------------------------===//
 
 #include "interception/interception.h"
@@ -301,6 +302,10 @@ bool PlatformHasDifferentMemcpyAndMemmove();
   return new_mem;
 #endif
 
+#ifndef COMMON_INTERCEPTOR_STRERROR
+#define COMMON_INTERCEPTOR_STRERROR() {}
+#endif
+
 struct FileMetadata {
   // For open_memstream().
   char **addr;
@@ -3677,6 +3682,7 @@ INTERCEPTOR(int, sched_getparam, int pid, void *param) {
 INTERCEPTOR(char *, strerror, int errnum) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, strerror, errnum);
+  COMMON_INTERCEPTOR_STRERROR();
   char *res = REAL(strerror)(errnum);
   if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1);
   return res;