c-decl.c (grokdeclarator): Disable warnings for anonymous bitfields.

gcc/ChangeLog:
* c-decl.c (grokdeclarator): Disable warnings for anonymous
bitfields.
* tree-sra.c (instantiate_element): Propagate disabled warnings
from the element itself to the created variable.
gcc/cp/ChangeLog:
* decl.c (grokdeclarator): Disable warnings for anonymous
bitfields.

From-SVN: r122684

gcc/ChangeLog

+2007-03-08  Alexandre Oliva  <aoliva@redhat.com>
+
+	* c-decl.c (grokdeclarator): Disable warnings for anonymous
+	bitfields.
+	* tree-sra.c (instantiate_element): Propagate disabled warnings
+	from the element itself to the created variable.
+
 2007-03-07  Richard Henderson  <rth@redhat.com>
 
 	PR target/30848

gcc/c-decl.c

@@ -4748,6 +4748,8 @@ grokdeclarator (const struct c_declarator *declarator,
 	type = c_build_qualified_type (type, type_quals);
 	decl = build_decl (FIELD_DECL, declarator->u.id, type);
 	DECL_NONADDRESSABLE_P (decl) = bitfield;
+	if (bitfield && !declarator->u.id)
+	  TREE_NO_WARNING (decl) = 1;
 
 	if (size_varies)
 	  C_DECL_VARIABLE_SIZE (decl) = 1;

gcc/cp/ChangeLog

+2007-03-08  Alexandre Oliva  <aoliva@redhat.com>
+
+	* decl.c (grokdeclarator): Disable warnings for anonymous
+	bitfields.
+
 2007-03-05  Volker Reichelt  <reichelt@netcologne.de>
 
 	* typeck2.c (readonly_error): Always emit a hard error.

gcc/cp/decl.c

 /* Process declarations and variables for C++ compiler.
    Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-   2001, 2002, 2003, 2004, 2005, 2006  Free Software Foundation, Inc.
+   2001, 2002, 2003, 2004, 2005, 2006, 2007  Free Software Foundation, Inc.
    Contributed by Michael Tiemann (tiemann@cygnus.com)
 
 This file is part of GCC.
@@ -8539,6 +8539,9 @@ grokdeclarator (const cp_declarator *declarator,
 	      {
 		decl = build_decl (FIELD_DECL, unqualified_id, type);
 		DECL_NONADDRESSABLE_P (decl) = bitfield;
+		if (bitfield && !unqualified_id)
+		  TREE_NO_WARNING (decl) = 1;
+
 		if (storage_class == sc_mutable)
 		  {
 		    DECL_MUTABLE_P (decl) = 1;

gcc/tree-sra.c

@@ -1241,6 +1241,8 @@ instantiate_element (struct sra_elt *elt)
       
       DECL_IGNORED_P (var) = 0;
       TREE_NO_WARNING (var) = TREE_NO_WARNING (base);
+      if (elt->element && TREE_NO_WARNING (elt->element))
+	TREE_NO_WARNING (var) = 1;
     }
   else
     {