Fix: don't deref a bad iterator when DSE from and to maps end at the …

…same coordinate.
smowton · Jul 24, 2015 · 98bf0a6 · 98bf0a6
1 parent 346cc58
commit 98bf0a6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/llpe/main/DSE.cpp b/llpe/main/DSE.cpp
@@ -575,7 +575,7 @@ void DSEMapPointer::mergeStores(DSEMapPointer* mergeFrom, DSEMapPointer* mergeTo
 
     const DSEMapEntry& fromEntry = fromit.value();
 
-    for(; toit.stop() <= fromit.stop(); ++toit) {
+    for(; toit != mergeTo->M->end() && toit.stop() <= fromit.stop(); ++toit) {
 
       const DSEMapEntry& toEntry = toit.value();
       uint64_t entrySize = toit.stop() - toit.start();