[compiler-rt] r331735 - [sanitizer] Fix error checking in ThreadLister

[Vitaly Buka via llvm-commits]

Author: vitalybuka
Date: Mon May  7 21:56:57 2018
New Revision: 331735

URL: http://llvm.org/viewvc/llvm-project?rev=331735&view=rev
Log:
[sanitizer] Fix error checking in ThreadLister

Modified:
    compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc

Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc?rev=331735&r1=331734&r2=331735&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc Mon May  7 21:56:57 2018
@@ -917,7 +917,8 @@ ThreadLister::ThreadLister(int pid) : pi
 }
 
 bool ThreadLister::ListThreads(InternalMmapVector<int> *threads) {
-  if (!descriptor_) return false;
+  if (internal_iserror(descriptor_))
+    return false;
   internal_lseek(descriptor_, 0, SEEK_SET);
   threads->clear();
 
@@ -942,7 +943,7 @@ bool ThreadLister::ListThreads(InternalM
 }
 
 ThreadLister::~ThreadLister() {
-  if (descriptor_ >= 0)
+  if (!internal_iserror(descriptor_))
     internal_close(descriptor_);
 }