Implement the GNU __null extension
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60235 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index e21047e..fb96469 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -3603,6 +3603,18 @@
return new VAArgExpr(BuiltinLoc, E, T.getNonReferenceType(), RPLoc);
}
+Sema::ExprResult Sema::ActOnGNUNullExpr(SourceLocation TokenLoc) {
+ // The type of __null will be int or long, depending on the size of
+ // pointers on the target.
+ QualType Ty;
+ if (Context.Target.getPointerWidth(0) == Context.Target.getIntWidth())
+ Ty = Context.IntTy;
+ else
+ Ty = Context.LongTy;
+
+ return new GNUNullExpr(Ty, TokenLoc);
+}
+
bool Sema::DiagnoseAssignmentResult(AssignConvertType ConvTy,
SourceLocation Loc,
QualType DstType, QualType SrcType,