Re: preprocessor/7312: bootstrap failure due to invalid use of errno

[Zack Weinberg <zack@codesourcery.com>]

The following reply was made to PR preprocessor/7312; it has been noted by GNATS.

From: Zack Weinberg <zack@codesourcery.com>
To: gcc-bugs@gcc.gnu.org, bruno@clisp.org
Cc: gcc-gnats@gcc.gnu.org, gcc-patches@gcc.gnu.org
Subject: Re: preprocessor/7312: bootstrap failure due to invalid use of
 errno
Date: Fri, 09 May 2003 08:26:33 -0700

 http://gcc.gnu.org/PR?7312
 
 I apologize for not noticing this bug earlier.  It's indeed a bug, but
 I don't think your suggested fix is right.  At that point in the code,
 nothing has been done to give errno a meaningful value, so ->err_no
 should just be cleared to 0.
 
 I will apply this patch later today, along with some other changes, if
 bootstrap succeeds.
 
 zw
 
         PR preprocessor/7312
         * cppfiles.c (find_or_create_entry): Initialize file->err_no
         to 0, not errno.
 
 ===================================================================
 Index: cppfiles.c
 --- cppfiles.c	21 Apr 2003 19:21:53 -0000	1.168
 +++ cppfiles.c	9 May 2003 15:24:48 -0000
 @@ -184,7 +184,7 @@ find_or_create_entry (pfile, fname)
        file = xcnew (struct include_file);
        file->name = name;
        file->header_name = name;
 -      file->err_no = errno;
 +      file->err_no = 0;
        node = splay_tree_insert (pfile->all_include_files,
  				(splay_tree_key) file->name,
  				(splay_tree_value) file);