[compiler-rt] r214082 - tsan: add a useful debug check

[Dmitry Vyukov]

Author: dvyukov
Date: Mon Jul 28 08:54:18 2014
New Revision: 214082

URL: http://llvm.org/viewvc/llvm-project?rev=214082&view=rev
Log:
tsan: add a useful debug check


Modified:
    compiler-rt/trunk/lib/tsan/rtl/tsan_dense_alloc.h

Modified: compiler-rt/trunk/lib/tsan/rtl/tsan_dense_alloc.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/tsan/rtl/tsan_dense_alloc.h?rev=214082&r1=214081&r2=214082&view=diff
==============================================================================
--- compiler-rt/trunk/lib/tsan/rtl/tsan_dense_alloc.h (original)
+++ compiler-rt/trunk/lib/tsan/rtl/tsan_dense_alloc.h Mon Jul 28 08:54:18 2014
@@ -65,6 +65,7 @@ class DenseSlabAlloc {
   }
 
   void Free(Cache *c, IndexT idx) {
+    DCHECK_NE(idx, 0);
     if (c->pos == Cache::kSize)
       Drain(c);
     c->cache[c->pos++] = idx;