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Date: Thu, 19 Feb 2004 00:06:00 -0000
From: "1319 at bot dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Message-ID: <20040219000603.14205.1319@bot.ru>
Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug c/14205] New: ICE with -M and -include
X-Bugzilla-Reason: CC
X-SW-Source: 2004-02/txt/msg01858.txt.bz2
List-Id: <gcc-bugs.sourceware.org>

When gcc invoked with -M and -include it segfaults on any input files. This
problem happens with c++ also. Easiest way to turn this bug on is:

$ touch file.c file.h
$ gcc -M -include file.h file.c
file.c:0: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
$

or, easier to debug:

$ cc1 -E -M -include file.h file.c

with same result.
It is at line 70 in c-ppoutput.c: (gcc 3.4.0 20040218)

61:/* Preprocess and output.  */
62:void
63:preprocess_file (cpp_reader *pfile)
64:{
65:  /* A successful cpp_read_main_file guarantees that we can call
66:     cpp_scan_nooutput or cpp_get_token next.  */
67:  if (flag_no_output)
68:    {
69:      /* Scan -included buffers, then the main file.  */
70:      while (pfile->buffer->prev)
80:	cpp_scan_nooutput (pfile);
90:      cpp_scan_nooutput (pfile);
91:    }

here pfile->buffer == 0.

-- 
           Summary: ICE with -M and -include
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: critical
          Priority: P1
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: 1319 at bot dot ru
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14205