1 files changed, 4 insertions, 3 deletions
diff --git a/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp b/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
index 62c54fc956..da9dd3406e 100644
--- a/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
+++ b/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
@@ -475,9 +475,6 @@ static Optional<NonLoc> tryRearrange(ProgramStateRef State,
     SingleTy = ResultTy;
     if (LSym->getType() != SingleTy)
       return None;
-    // Substracting unsigned integers is a nightmare.
-    if (!SingleTy->isSignedIntegerOrEnumerationType())
-      return None;
   } else {
     // Don't rearrange other operations.
     return None;
@@ -485,6 +482,10 @@ static Optional<NonLoc> tryRearrange(ProgramStateRef State,
 
   assert(!SingleTy.isNull() && "We should have figured out the type by now!");
 
+  // Rearrange signed symbolic expressions only
+  if (!SingleTy->isSignedIntegerOrEnumerationType())
+    return None;
+
   SymbolRef RSym = Rhs.getAsSymbol();
   if (!RSym || RSym->getType() != SingleTy)
     return None;