Subject: port-i386/6486: as dumps core
To: None <gnats-bugs@gnats.netbsd.org>
From: None <Anders.Hjalmarsson@economics.gu.se>
List: netbsd-bugs
Date: 11/23/1998 15:30:10
>Number: 6486
>Category: port-i386
>Synopsis: as dumps core
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: gnats-admin (GNATS administrator)
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Nov 23 06:35:01 1998
>Last-Modified:
>Originator: Anders Hjalmarsson
>Organization:
>Release: NetBSD-current 19981122
>Environment:
System: NetBSD econahja.econ.gu.se 1.3H NetBSD 1.3H (ECONAHJA) #135: Wed Nov 11 10:08:12 CET 1998 econahja@econahja.econ.gu.se:/usr/src/sys/arch/i386/compile/ECONAHJA i386
>Description:
as (gas.new) for i386 dumps core on the following code
(cut down from mpn_add_n.S in gmp):
.text
L0:
addl $(Loop-L0-3),%eax
Loop: movl (%esi),%eax
fixP->fx_addsy is NULL so fixP->fx_addsy->bsym->flags & BSF_GLOBAL so the
process gets a SIGSEGV
>How-To-Repeat:
gdb /var/obj/gnu/usr.bin/gas.new/as
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GDB 4.16 (i386--netbsd), Copyright 1996 Free Software Foundation, Inc...
(gdb) run -k -o t.so t.s
Starting program: /var/obj/gnu/usr.bin/gas.new/as -k -o t.so t.s
Program received signal SIGSEGV, Segmentation fault.
0x22078 in md_apply_fix3 (fixP=0x43064, valp=0xefbfd5b4, seg=0x5d0ac)
at /usr/src/gnu/usr.bin/gas.new/../../dist/gas/config/tc-i386.c:2734
2734 else if ((fixP->fx_r_type == BFD_RELOC_32)
(gdb) bt
#0 0x22078 in md_apply_fix3 (fixP=0x43064, valp=0xefbfd5b4, seg=0x5d0ac)
at /usr/src/gnu/usr.bin/gas.new/../../dist/gas/config/tc-i386.c:2734
#1 0x13f32 in fixup_segment ()
#2 0x1283f in write_relocs ()
#3 0x400828b2 in bfd_map_over_sections ()
#4 0x133b5 in write_object_file ()
#5 0x46c5 in main ()
(gdb)
>Fix:
>Audit-Trail:
>Unformatted: