From: David Majnemer <david.majnemer@gmail.com>
Date: Sun, 28 Dec 2014 22:51:45 +0000 (+0000)
Subject: Sema: Variable templates cannot be static bitfield members
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0e55333eafbdf7ad54c78ae3910b3fd7e3929e8f;p=clang

Sema: Variable templates cannot be static bitfield members

We correctly forbid variables but not variable templates.  Diagnose this
case instead of crashing.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224905 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index 5737901ec6..a57a9206fb 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -2164,7 +2164,7 @@ Sema::ActOnCXXMemberDeclarator(Scope *S, AccessSpecifier AS, Declarator &D,
     if (BitWidth) {
       if (Member->isInvalidDecl()) {
         // don't emit another diagnostic.
-      } else if (isa<VarDecl>(Member)) {
+      } else if (isa<VarDecl>(Member) || isa<VarTemplateDecl>(Member)) {
         // C++ 9.6p3: A bit-field shall not be a static member.
         // "static member 'A' cannot be a bit-field"
         Diag(Loc, diag::err_static_not_bitfield)
diff --git a/test/SemaCXX/cxx1y-variable-templates_in_class.cpp b/test/SemaCXX/cxx1y-variable-templates_in_class.cpp
index f6f77f0100..93a2095c9b 100644
--- a/test/SemaCXX/cxx1y-variable-templates_in_class.cpp
+++ b/test/SemaCXX/cxx1y-variable-templates_in_class.cpp
@@ -321,3 +321,9 @@ namespace in_nested_classes {
   // TODO:
 }
 
+namespace bitfield {
+struct S {
+  template <int I>
+  static int f : I; // expected-error {{static member 'f' cannot be a bit-field}}
+};
+}