Don't crash when an explicit template instantiation has no user-written
arguments. This happens in clang itself where template:
template <typename T> T const *getAs();
gets specialized with:
template<> inline clang::TypedefType const *getAs() { ... }
and there's no TemplateArgumentList.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109127 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/AST/RecursiveASTVisitor.h b/include/clang/AST/RecursiveASTVisitor.h
index fc62197..0b56772 100644
--- a/include/clang/AST/RecursiveASTVisitor.h
+++ b/include/clang/AST/RecursiveASTVisitor.h
@@ -1318,9 +1318,13 @@
D->getTemplateSpecializationInfo()) {
if (FTSI->getTemplateSpecializationKind() != TSK_Undeclared &&
FTSI->getTemplateSpecializationKind() != TSK_ImplicitInstantiation) {
- const TemplateArgumentListInfo *TALI = FTSI->TemplateArgumentsAsWritten;
- TRY_TO(TraverseTemplateArgumentLocsHelper(TALI->getArgumentArray(),
- TALI->size()));
+ // A specialization might not have explicit template arguments if it has
+ // a templated return type and concrete arguments.
+ if (const TemplateArgumentListInfo *TALI =
+ FTSI->TemplateArgumentsAsWritten) {
+ TRY_TO(TraverseTemplateArgumentLocsHelper(TALI->getArgumentArray(),
+ TALI->size()));
+ }
}
}