[compiler-rt] r201240 - [asan] Handle OpenFile errors in CovDump.

[Evgeniy Stepanov]

Author: eugenis
Date: Wed Feb 12 09:29:22 2014
New Revision: 201240

URL: http://llvm.org/viewvc/llvm-project?rev=201240&view=rev
Log:
[asan] Handle OpenFile errors in CovDump.

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

Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_coverage.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_coverage.cc?rev=201240&r1=201239&r2=201240&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_coverage.cc (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_coverage.cc Wed Feb 12 09:29:22 2014
@@ -95,9 +95,13 @@ void CovDump() {
                         module_name, internal_getpid());
       InternalFree(module_name);
       uptr fd = OpenFile(path.data(), true);
-      internal_write(fd, offsets.data(), offsets.size() * sizeof(u32));
-      internal_close(fd);
-      VReport(1, " CovDump: %s: %zd PCs written\n", path.data(), vb - old_vb);
+      if (internal_iserror(fd)) {
+        Report(" CovDump: failed to open %s for writing\n", path.data());
+      } else {
+        internal_write(fd, offsets.data(), offsets.size() * sizeof(u32));
+        internal_close(fd);
+        VReport(1, " CovDump: %s: %zd PCs written\n", path.data(), vb - old_vb);
+      }
     }
   }
 #endif  // !SANITIZER_WINDOWS