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Date: Fri, 07 Jan 2005 15:43:00 -0000
From: "Thomas dot Koenig at online dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Message-ID: <20050107154319.19314.Thomas.Koenig@online.de>
Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug libfortran/19314] New: inquire(position=) segfaults at runtime
X-Bugzilla-Reason: CC
X-SW-Source: 2005-01/txt/msg00890.txt.bz2
List-Id: <gcc-bugs.sourceware.org>

Because of the segfault, I assume that this is different from PR 19313.

$ cat inquire-position.f
      character*20 chr
      open(7)
      inquire(7,position=chr)
      print *,chr
      end
$ gfortran inquire-position.f
$ ./a.out
Segmentation fault
$ gfortran -v ; gfortran -dumpmachine
Using built-in specs.
Configured with: ../gcc-4.0-20050102/configure --prefix=/home/zfkts
--enable-languages=c,c++,f95
Thread model: posix
gcc version 4.0.0 20050102 (experimental)
ia64-unknown-linux-gnu

$ gfortran -g inquire-position.f
$ gdb ./a.out
GNU gdb Red Hat Linux (6.1post-1.20040607.52rh)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "ia64-redhat-linux-gnu"...Using host libthread_db
library "/lib/tls/libthread_db.so.1".

(gdb) r
Starting program: /home/zfkts/Krempel/a.out

Program received signal SIGSEGV, Segmentation fault.
0x20000000002cee11 in strlen () from /lib/tls/libc.so.6.1
(gdb) bt
#0  0x20000000002cee11 in strlen () from /lib/tls/libc.so.6.1
#1  0x2000000000052470 in *_gfortrani_cf_strcpy (dest=0x0, dest_len=0, src=0x0)
    at ../../../gcc-4.0-20050102/libgfortran/runtime/string.c:84
#2  0x20000000000a3890 in inquire_via_unit (u=0x600000000000a2e0)
    at ../../../gcc-4.0-20050102/libgfortran/io/inquire.c:166
#3  0x20000000000a48a0 in *_gfortran_st_inquire ()
    at ../../../gcc-4.0-20050102/libgfortran/io/inquire.c:370
#4  0x4000000000000cb0 in MAIN__ () at inquire-position.f:3
#5  0x4000000000000df0 in main (argc=1, argv=0x60000fffffffa108)
    at ../../../gcc-4.0-20050102/libgfortran/fmain.c:18
(gdb)

-- 
           Summary: inquire(position=) segfaults at runtime
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libfortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: Thomas dot Koenig at online dot de
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19314