Enhance the -Wsign-compare handling to suppress the -Wsign-compare warning in the case of a shifted bitfield. PR11572.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146634 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaChecking.cpp b/lib/Sema/SemaChecking.cpp
index 5de124d..ebdc832 100644
--- a/lib/Sema/SemaChecking.cpp
+++ b/lib/Sema/SemaChecking.cpp
@@ -3257,7 +3257,7 @@
// user has an explicit widening cast, we should treat the value as
// being of the new, wider type.
if (ImplicitCastExpr *CE = dyn_cast<ImplicitCastExpr>(E)) {
- if (CE->getCastKind() == CK_NoOp)
+ if (CE->getCastKind() == CK_NoOp || CE->getCastKind() == CK_LValueToRValue)
return GetExprRange(C, CE->getSubExpr(), MaxWidth);
IntRange OutputTypeRange = IntRange::forValueOfType(C, CE->getType());