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-rw-r--r--clang/lib/AST/DeclObjC.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/clang/lib/AST/DeclObjC.cpp b/clang/lib/AST/DeclObjC.cpp
index 9cc22912caf..5df5ff3a7ad 100644
--- a/clang/lib/AST/DeclObjC.cpp
+++ b/clang/lib/AST/DeclObjC.cpp
@@ -381,6 +381,7 @@ ObjCInterfaceDecl::FindCategoryDeclaration(IdentifierInfo *CategoryId) const {
const FieldDecl *
ObjCInterfaceDecl::lookupFieldDeclForIvar(ASTContext &Context,
const ObjCIvarDecl *IVar) const {
+ assert(!isForwardDecl() && "Invalid interface decl!");
const RecordDecl *RecordForDecl = Context.addRecordToClass(this);
assert(RecordForDecl && "lookupFieldDeclForIvar no storage for class");
DeclContext::lookup_const_result Lookup =
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