[llvm-commits] [llvm-gcc-4.2] r53566 - in /llvm-gcc-4.2/trunk/gcc/cp: cp-tree.h decl2.c lex.c pt.c

[Chris Lattner]

Author: lattner
Date: Mon Jul 14 13:06:32 2008
New Revision: 53566

URL: http://llvm.org/viewvc/llvm-project?rev=53566&view=rev
Log:
reapply Rafael's patch that I reverted, which is GPL2.  His
commit message:

port http://gcc.gnu.org/viewcvs?view=rev&revision=127716

2007-08-22  Jason Merrill  <jason at redhat.com>

       PR c++/29365
       * pt.c (outermost_tinst_level): New function.
       * lex.c (in_main_input_context): New function.
       * cp-tree.h: Declare it.
       * decl2.c (constrain_class_visibility): Use it to avoid warning
       about uses of the anonymous namespace in the main input file.

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20080707/064926.html


Modified:
    llvm-gcc-4.2/trunk/gcc/cp/cp-tree.h
    llvm-gcc-4.2/trunk/gcc/cp/decl2.c
    llvm-gcc-4.2/trunk/gcc/cp/lex.c
    llvm-gcc-4.2/trunk/gcc/cp/pt.c

Modified: llvm-gcc-4.2/trunk/gcc/cp/cp-tree.h
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/cp/cp-tree.h?rev=53566&r1=53565&r2=53566&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/cp/cp-tree.h (original)
+++ llvm-gcc-4.2/trunk/gcc/cp/cp-tree.h Mon Jul 14 13:06:32 2008
@@ -4122,6 +4122,7 @@
 extern void yyhook				(int);
 extern bool cxx_init				(void);
 extern void cxx_finish				(void);
+extern bool in_main_input_context		(void);
 
 /* in method.c */
 extern void init_method				(void);
@@ -4204,6 +4205,7 @@
 extern bool reregister_specialization		(tree, tree, tree);
 extern tree fold_non_dependent_expr		(tree);
 extern bool explicit_class_specialization_p     (tree);
+extern tree outermost_tinst_level		(void);
 
 /* in repo.c */
 extern void init_repo				(void);

Modified: llvm-gcc-4.2/trunk/gcc/cp/decl2.c
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/cp/decl2.c?rev=53566&r1=53565&r2=53566&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/cp/decl2.c (original)
+++ llvm-gcc-4.2/trunk/gcc/cp/decl2.c Mon Jul 14 13:06:32 2008
@@ -1879,9 +1879,12 @@
 	int subvis = type_visibility (ftype);
 
 	if (subvis == VISIBILITY_ANON)
-	  warning (0, "\
+	  {
+	    if (!in_main_input_context ())
+	      warning (0, "\
 %qT has a field %qD whose type uses the anonymous namespace",
 		   type, t);
+	  }
 	else if (IS_AGGR_TYPE (ftype)
 		 && vis < VISIBILITY_HIDDEN
 		 && subvis >= VISIBILITY_HIDDEN)
@@ -1896,9 +1899,12 @@
       int subvis = type_visibility (TREE_TYPE (t));
 
       if (subvis == VISIBILITY_ANON)
-	warning (0, "\
+        {
+	  if (!in_main_input_context())
+	    warning (0, "\
 %qT has a base %qT whose type uses the anonymous namespace",
 		 type, TREE_TYPE (t));
+	}
       else if (vis < VISIBILITY_HIDDEN
 	       && subvis >= VISIBILITY_HIDDEN)
 	warning (OPT_Wattributes, "\

Modified: llvm-gcc-4.2/trunk/gcc/cp/lex.c
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/cp/lex.c?rev=53566&r1=53565&r2=53566&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/cp/lex.c (original)
+++ llvm-gcc-4.2/trunk/gcc/cp/lex.c Mon Jul 14 13:06:32 2008
@@ -877,3 +877,18 @@
 
   return t;
 }
+
+/* Returns true if we are currently in the main source file, or in a
+   template instantiation started from the main source file.  */
+
+bool
+in_main_input_context (void)
+{
+  tree tl = outermost_tinst_level();
+
+  if (tl)
+    return strcmp (main_input_filename,
+		   LOCATION_FILE (TINST_LOCATION (tl))) == 0;
+  else
+    return strcmp (main_input_filename, input_filename) == 0;
+}

Modified: llvm-gcc-4.2/trunk/gcc/cp/pt.c
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/cp/pt.c?rev=53566&r1=53565&r2=53566&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/cp/pt.c (original)
+++ llvm-gcc-4.2/trunk/gcc/cp/pt.c Mon Jul 14 13:06:32 2008
@@ -5288,6 +5288,15 @@
   pop_tinst_level ();
 }
 
+/* Returns the TINST_LEVEL which gives the original instantiation
+   context.  */
+
+tree
+outermost_tinst_level (void)
+{
+  return tree_last (current_tinst_level);
+}
+
 /* DECL is a friend FUNCTION_DECL or TEMPLATE_DECL.  ARGS is the
    vector of template arguments, as for tsubst.