Don't ignore linkage when ignoring visibility in the instantiation of a

method template.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157486 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 29 insertions, 4 deletions

diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index 405c2b328f..0ca36cbb14 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -535,12 +535,20 @@ static LinkageInfo getLVForClassMember(const NamedDecl *D, bool OnlyTemplate) {
     // the template parameters and arguments.
     if (FunctionTemplateSpecializationInfo *spec
            = MD->getTemplateSpecializationInfo()) {
+      const TemplateArgumentList &TemplateArgs = *spec->TemplateArguments;
+      LinkageInfo ArgsLV = getLVForTemplateArgumentList(TemplateArgs,
+                                                        OnlyTemplate);
+      TemplateParameterList *TemplateParams =
+        spec->getTemplate()->getTemplateParameters();
+      LinkageInfo ParamsLV = getLVForTemplateParameterList(TemplateParams);
       if (shouldConsiderTemplateVis(MD, spec)) {
-        LV.mergeWithMin(getLVForTemplateArgumentList(*spec->TemplateArguments,
-                                                     OnlyTemplate));
+        LV.mergeWithMin(ArgsLV);
         if (!OnlyTemplate)
-          LV.merge(getLVForTemplateParameterList(
-                              spec->getTemplate()->getTemplateParameters()));
+          LV.merge(ParamsLV);
+      } else {
+        LV.mergeLinkage(ArgsLV);
+        if (!OnlyTemplate)
+          LV.mergeLinkage(ParamsLV);
       }
     }
 
diff --git a/test/CodeGenCXX/visibility.cpp b/test/CodeGenCXX/visibility.cpp
index 20359a441d..d302214df4 100644
--- a/test/CodeGenCXX/visibility.cpp
+++ b/test/CodeGenCXX/visibility.cpp
@@ -864,3 +864,20 @@ namespace test46 {
   // CHECK: define internal void @_ZN6test463fooINS_12_GLOBAL__N_13barEEEvv
   // CHECK-HIDDEN: define internal void @_ZN6test463fooINS_12_GLOBAL__N_13barEEEvv
 }
+
+namespace test47 {
+  struct foo {
+    template <typename T>
+    static void bar() {
+    }
+  };
+  namespace {
+    struct zed;
+  }
+  template __attribute__((visibility("default"))) void foo::bar<zed>();
+  void baz() {
+    foo::bar<zed>();
+  }
+  // CHECK: define internal void @_ZN6test473foo3barINS_12_GLOBAL__N_13zedEEEvv
+  // CHECK-HIDDEN: define internal void @_ZN6test473foo3barINS_12_GLOBAL__N_13zedEEEvv
+}