Re: Segmentation fault using lalr1.cc

[Paul Eggert]

> From: Tim Van Holder <address@hidden>
> Date: 23 Jan 2003 08:17:17 +0100

>     if (strcmp (filename, "@output_header_name@") == 0)
>       filename = spec_defines_file;
> |=>              ^^^^^^^^^^^^^^^^^ this is NULL

Thanks for the bug report.  Does this patch fix things for you?

2003-01-22  Paul Eggert  <address@hidden>

        * data/lalr1.cc: Do not output a header unless b4_defines_flag
        is set.  This fixes a bug reported by Tim Van Holder.

--- data/lalr1.cc.~1.19.~       2003-01-17 00:38:16.000000000 -0800
+++ data/lalr1.cc       2003-01-22 23:46:22.098522000 -0800
@@ -1,6 +1,6 @@
 m4_divert(-1)
 # C++ skeleton for Bison
-# Copyright (C) 2002 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -87,9 +87,10 @@ m4_define([b4_constructor],
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert(0)dnl
address@hidden @output_header_name@
+m4_if(b4_defines_flag, 0, [],
address@hidden @output_header_name@
 b4_copyright([C++ Skeleton parser for LALR(1) parsing with Bison],
-             [2002])[
+             [2002, 2003])[
 /* FIXME: This is wrong, we want computed header guards.
    I don't know why the macros are missing now. :( */
 #ifndef PARSER_HEADER_H
@@ -282,10 +283,10 @@ namespace yy
 }
 
 #endif /* ! defined PARSER_HEADER_H */]
-dnl
+])dnl
 @output @output_parser_name@
 b4_copyright([C++ Skeleton parser for LALR(1) parsing with Bison],
-             [2002])[
+             [2002, 2003])[
 
 #include @output_header_name@
 
@@ -766,7 +767,7 @@ const yy::]b4_parser_class_name[::TokenN
 ]b4_epilogue
 dnl
 @output stack.hh
-b4_copyright([2002])[
+b4_copyright([2002, 2003])[
 
 #ifndef BISON_STACK_HH
 # define BISON_STACK_HH
@@ -863,7 +864,7 @@ namespace yy
 #endif // not BISON_STACK_HH]
 dnl
 @output location.hh
-b4_copyright([2002])[
+b4_copyright([2002, 2003])[
 
 #ifndef BISON_LOCATION_HH
 # define BISON_LOCATION_HH