From aa49ecc4586af252e2841c2bc8f5689526da7a4b Mon Sep 17 00:00:00 2001
From: Douglas Gregor <dgregor@apple.com>
Date: Wed, 1 Dec 2010 20:32:20 +0000
Subject: Not content to implement just "extern" explicit template
 instantiations, GCC also supports "inline" and "static" explicit template
 instantiations. Parse and warn about such constructs, but don't implement the
 semantics of either "inline" or "static". They don't seem to be widely used.

llvm-svn: 120599
---
 clang/lib/Parse/Parser.cpp | 34 ++++++++++++++++++++++++++++++----
 1 file changed, 30 insertions(+), 4 deletions(-)

(limited to 'clang/lib/Parse/Parser.cpp')

diff --git a/clang/lib/Parse/Parser.cpp b/clang/lib/Parse/Parser.cpp
index fefe7871df0..f5e4bfb6498 100644
--- a/clang/lib/Parse/Parser.cpp
+++ b/clang/lib/Parse/Parser.cpp
@@ -525,12 +525,38 @@ Parser::DeclGroupPtrTy Parser::ParseExternalDeclaration(CXX0XAttributeList Attr,
       return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, Attr);
     }
 
-  case tok::kw_inline:
-    if (getLang().CPlusPlus && NextToken().is(tok::kw_namespace)) {
-      // Inline namespaces. Allowed as an extension even in C++03.
+  case tok::kw_static:
+    // Parse (then ignore) 'static' prior to a template instantiation. This is
+    // a GCC extension that we intentionally do not support.
+    if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) {
+      Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored)
+        << 0;
       SourceLocation DeclEnd;
       StmtVector Stmts(Actions);
-      return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, Attr);
+      return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, Attr);  
+    }
+    goto dont_know;
+      
+  case tok::kw_inline:
+    if (getLang().CPlusPlus) {
+      tok::TokenKind NextKind = NextToken().getKind();
+      
+      // Inline namespaces. Allowed as an extension even in C++03.
+      if (NextKind == tok::kw_namespace) {
+        SourceLocation DeclEnd;
+        StmtVector Stmts(Actions);
+        return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, Attr);
+      }
+      
+      // Parse (then ignore) 'inline' prior to a template instantiation. This is
+      // a GCC extension that we intentionally do not support.
+      if (NextKind == tok::kw_template) {
+        Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored)
+          << 1;
+        SourceLocation DeclEnd;
+        StmtVector Stmts(Actions);
+        return ParseDeclaration(Stmts, Declarator::FileContext, DeclEnd, Attr);  
+      }
     }
     goto dont_know;
 
-- 
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