Fix crash if a literal operator template's template parameter pack is not a non-type template parameter pack. Patch by Andy Gibbs!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161260 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index 35364dc..8cd134a 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -9473,7 +9473,7 @@
TemplateParameterList *Params = TpDecl->getTemplateParameters();
if (Params->size() == 1) {
NonTypeTemplateParmDecl *PmDecl =
- cast<NonTypeTemplateParmDecl>(Params->getParam(0));
+ dyn_cast<NonTypeTemplateParmDecl>(Params->getParam(0));
// The template parameter must be a char parameter pack.
if (PmDecl && PmDecl->isTemplateParameterPack() &&
diff --git a/test/SemaCXX/literal-operators.cpp b/test/SemaCXX/literal-operators.cpp
index 7f68cd3..f4c5c35 100644
--- a/test/SemaCXX/literal-operators.cpp
+++ b/test/SemaCXX/literal-operators.cpp
@@ -41,3 +41,4 @@
template <char...> void operator "" _good ();
// FIXME: Test some invalid decls that might crop up.
+template <typename...> void operator "" _invalid(); // expected-error {{parameter declaration for literal operator 'operator "" _invalid' is not valid}}
