1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Analysis/PrintfFormatString.cpp b/lib/Analysis/PrintfFormatString.cpp
index bc2b356934..dbe73c8f83 100644
--- a/lib/Analysis/PrintfFormatString.cpp
+++ b/lib/Analysis/PrintfFormatString.cpp
@@ -259,7 +259,8 @@ ArgTypeResult PrintfSpecifier::getArgType(ASTContext &Ctx) const {
   if (CS.isIntArg())
     switch (LM.getKind()) {
       case LengthModifier::AsLongDouble:
-        return ArgTypeResult::Invalid();
+        // GNU extension.
+        return Ctx.LongLongTy;
       case LengthModifier::None: return Ctx.IntTy;
       case LengthModifier::AsChar: return ArgTypeResult::AnyCharTy;
       case LengthModifier::AsShort: return Ctx.ShortTy;
@@ -280,7 +281,8 @@ ArgTypeResult PrintfSpecifier::getArgType(ASTContext &Ctx) const {
   if (CS.isUIntArg())
     switch (LM.getKind()) {
       case LengthModifier::AsLongDouble:
-        return ArgTypeResult::Invalid();
+        // GNU extension.
+        return Ctx.UnsignedLongLongTy;
       case LengthModifier::None: return Ctx.UnsignedIntTy;
       case LengthModifier::AsChar: return Ctx.UnsignedCharTy;
       case LengthModifier::AsShort: return Ctx.UnsignedShortTy;