1 files changed, 3 insertions, 1 deletions
diff --git a/lib/IR/GCOV.cpp b/lib/IR/GCOV.cpp
index 245c500cf621..88e0cd094ec2 100644
--- a/lib/IR/GCOV.cpp
+++ b/lib/IR/GCOV.cpp
@@ -263,10 +263,12 @@ bool GCOVFunction::readGCDA(GCOVBuffer &Buff, GCOV::GCOVVersion Version) {
   // required to combine the edge counts that are contained in the GCDA file.
   for (uint32_t BlockNo = 0; Count > 0; ++BlockNo) {
     // The last block is always reserved for exit block
-    if (BlockNo >= Blocks.size()-1) {
+    if (BlockNo >= Blocks.size()) {
       errs() << "Unexpected number of edges (in " << Name << ").\n";
       return false;
     }
+    if (BlockNo == Blocks.size() - 1)
+      errs() << "(" << Name << ") has arcs from exit block.\n";
     GCOVBlock &Block = *Blocks[BlockNo];
     for (size_t EdgeNo = 0, End = Block.getNumDstEdges(); EdgeNo < End;
            ++EdgeNo) {