[clang] Make sure attributes on member classes are applied properly
Summary:
Attributes on member classes of class templates and member class templates
of class templates are not currently instantiated. This was discovered by
Richard Smith here:
http://lists.llvm.org/pipermail/cfe-dev/2018-September/059291.html
This commit makes sure that attributes are instantiated properly. This
commit does not fix the broken behavior for member partial and explicit
specializations of class templates.
PR38913
Reviewers: rsmith
Subscribers: dexonsmith, cfe-commits
Differential Revision: https://reviews.llvm.org/D51997
llvm-svn: 342238
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 09aa25c..340e0c6 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -1258,6 +1258,9 @@
if (QualifierLoc)
RecordInst->setQualifierInfo(QualifierLoc);
+ SemaRef.InstantiateAttrsForDecl(TemplateArgs, Pattern, RecordInst, LateAttrs,
+ StartingScope);
+
ClassTemplateDecl *Inst
= ClassTemplateDecl::Create(SemaRef.Context, DC, D->getLocation(),
D->getIdentifier(), InstParams, RecordInst);
@@ -1491,6 +1494,9 @@
if (SubstQualifier(D, Record))
return nullptr;
+ SemaRef.InstantiateAttrsForDecl(TemplateArgs, D, Record, LateAttrs,
+ StartingScope);
+
Record->setImplicit(D->isImplicit());
// FIXME: Check against AS_none is an ugly hack to work around the issue that
// the tag decls introduced by friend class declarations don't have an access
diff --git a/clang/test/SemaCXX/PR38913.cpp b/clang/test/SemaCXX/PR38913.cpp
new file mode 100644
index 0000000..698de8c
--- /dev/null
+++ b/clang/test/SemaCXX/PR38913.cpp
@@ -0,0 +1,12 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
+
+// PR38913
+// Check that we instantiate attributes on declarations for...
+
+// ...a member class of a class template specialization
+template<class T> struct A { struct __attribute__((abi_tag("ATAG"))) X { }; };
+A<int>::X* a() { return 0; } // CHECK-DAG: @_Z1aB4ATAGv
+
+// ...a member class template
+template<class T> struct B { template<class U> struct __attribute__((abi_tag("BTAG"))) X { }; };
+B<int>::X<int>* b() { return 0; } // CHECK-DAG: @_Z1bB4BTAGv