From 295d20d66fac1cf89448d58b8700f1b392aa7081 Mon Sep 17 00:00:00 2001
From: David Blaikie <dblaikie@gmail.com>
Date: Tue, 16 Dec 2014 23:49:18 +0000
Subject: [PATCH] PR21909: Don't try (and crash) to generate debug info for
explicit instantiations of explicit specializations.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224394 91177308-0d34-0410-b5e6-96231b3b80d8
---
lib/CodeGen/CodeGenModule.cpp | 3 ++-
.../debug-info-template-explicit-specialization.cpp | 8 ++++++++
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 87bd955a6c..25aaa30855 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -3283,7 +3283,8 @@ void CodeGenModule::EmitTopLevelDecl(Decl *D) {
case Decl::ClassTemplateSpecialization: {
const auto *Spec = cast<ClassTemplateSpecializationDecl>(D);
if (DebugInfo &&
- Spec->getSpecializationKind() == TSK_ExplicitInstantiationDefinition)
+ Spec->getSpecializationKind() == TSK_ExplicitInstantiationDefinition &&
+ Spec->hasDefinition())
DebugInfo->completeTemplateDefinition(*Spec);
break;
}
diff --git a/test/CodeGenCXX/debug-info-template-explicit-specialization.cpp b/test/CodeGenCXX/debug-info-template-explicit-specialization.cpp
index 506c0d5357..461303884b 100644
--- a/test/CodeGenCXX/debug-info-template-explicit-specialization.cpp
+++ b/test/CodeGenCXX/debug-info-template-explicit-specialization.cpp
@@ -91,3 +91,11 @@ struct j {
extern template class j<int>;
j<int> jj;
// CHECK: ; [ DW_TAG_structure_type ] [j<int, int>]
+
+template <typename T>
+struct k {
+};
+template <>
+struct k<int>;
+template struct k<int>;
+// CHECK-NOT: ; [ DW_TAG_structure_type ] [k<int>]
--
2.40.0