From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32673 invoked by alias); 16 Apr 2007 19:10:29 -0000 Received: (qmail 32627 invoked by uid 48); 16 Apr 2007 19:10:17 -0000 Date: Mon, 16 Apr 2007 19:10:00 -0000 Message-ID: <20070416191017.32626.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug preprocessor/30805] [4.1/4.2/4.3 Regression] Internal compiler error when using "x##,##__VA_ARGS__" in macro In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "bonzini at gnu dot org" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2007-04/txt/msg01162.txt.bz2 ------- Comment #5 from bonzini at gnu dot org 2007-04-16 20:10 ------- What about a patch like this? Index: macro.c =================================================================== --- macro.c (revision 123691) +++ macro.c (working copy) @@ -499,9 +499,15 @@ paste_all_tokens (cpp_reader *pfile, con rhs = *FIRST (context).ptoken++; if (rhs->type == CPP_PADDING) - abort (); + { + /* In obscure cases where the GNU extension ,##__VA_ARGS__ is + used, we can get a CPP_PADDING token here. Assert that we + can safely ignore it. */ + if (rhs->flags & PASTE_LEFT) + abort (); + } - if (!paste_tokens (pfile, &lhs, rhs)) + else if (!paste_tokens (pfile, &lhs, rhs)) break; } while (rhs->flags & PASTE_LEFT); -- bonzini at gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bonzini at gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30805