Date: Thu, 3 May 2007 22:27:17 -0700 (PDT) From: "Steven G. Kargl" <kargl@troutmask.apl.washington.edu> To: FreeBSD-gnats-submit@FreeBSD.org Subject: bin/112408: tcsh causes gdb to hang Message-ID: <200705040527.l445RHCw054154@troutmask.apl.washington.edu> Resent-Message-ID: <200705040530.l445U5Ck064500@freefall.freebsd.org>
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>Number: 112408
>Category: bin
>Synopsis: tcsh causes gdb to hang
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri May 04 05:30:05 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator: Steven G. Kargl
>Release: FreeBSD 7.0-CURRENT i386
>Organization:
APL/UW
>Environment:
>Description:
tcsh causes gdb to hang. I've compile gfortran 4.3 from gcc.gnu.org
svn repository. Trying to debug a gfortran compiler bug via
mobile:kargl[254] gdb ~/work/4x/libexec/gcc/i386-unknown-freebsd7.0/4.3.0/f951
GNU gdb 6.1.1 [FreeBSD]
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 "i386-marcel-freebsd"...
(gdb) run b.f90
Starting program: ~/work/4x/libexec/gcc/i386-unknown-freebsd7.0/4.3.0/f951 b.f90
leads to
43 processes: 3 running, 38 sleeping, 1 stopped, 1 zombie
CPU states: 41.6% user, 0.0% nice, 57.6% system, 0.8% interrupt, 0.0% idle
Mem: 104M Active, 283M Inact, 78M Wired, 27M Cache, 60M Buf, 1776K Free
Swap: 712M Total, 712M Free
PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
97164 kargl 1 127 0 30364K 28192K RUN 0:30 66.97% gdb
97166 kargl 1 106 0 3240K 1580K STOP 0:10 23.67% tcsh
where tcsh sits in a stopped state.
If I do
mobile:kargl[253] setenv SHELL /bin/sh
mobile:kargl[254] gdb ~/work/4x/libexec/gcc/i386-unknown-freebsd7.0/4.3.0/f951
GNU gdb 6.1.1 [FreeBSD]
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 "i386-marcel-freebsd"...
(gdb) run b.f90
Starting program: ~/work/4x/libexec/gcc/i386-unknown-freebsd7.0/4.3.0/f951 b.f90
b.f90:1.16:
character(len=2.3) :: s
1
Error: Expression at (1) must be of INTEGER type
b.f90:1.16:
character(len=2.3) :: s
1
Error: Expression at (1) must be of INTEGER type
Program received signal SIGSEGV, Segmentation fault.
0x287c4cf1 in __gmpn_copyi () from /usr/local/lib/libgmp.so.7
(gdb) bt
(gdb) bt
#0 0x287c4cf1 in __gmpn_copyi () from /usr/local/lib/libgmp.so.7
#1 0x287b5413 in __gmpz_set () from /usr/local/lib/libgmp.so.7
#2 0x0809495b in gfc_simplify_len (e=0x28932260) at ../../gcc4x/gcc/fortran/simplify.c:2143
#3 0x0806ba1d in do_simplify (specific=0x28941b70, e=0x28932200)
at ../../gcc4x/gcc/fortran/intrinsic.c:3134
#4 0x0806bde1 in gfc_intrinsic_func_interface (expr=0x28932200, error_flag=680567168)
at ../../gcc4x/gcc/fortran/intrinsic.c:3395
#5 0x08089b91 in gfc_resolve_expr (e=0x28932200) at ../../gcc4x/gcc/fortran/resolve.c:1456
#6 0x0808bf4d in resolve_code (code=0x2892c9c0, ns=0x28938000)
at ../../gcc4x/gcc/fortran/resolve.c:5091
#7 0x0808d7ee in gfc_resolve_blocks (b=0x2892ca00, ns=0x28938000)
at ../../gcc4x/gcc/fortran/resolve.c:5024
#8 0x0808bf31 in resolve_code (code=0x2892ca80, ns=0x28938000)
at ../../gcc4x/gcc/fortran/resolve.c:5083
#9 0x0808ee65 in resolve_codes (ns=0x28938000) at ../../gcc4x/gcc/fortran/resolve.c:7386
#10 0x0808ee93 in gfc_resolve (ns=0x28938000) at ../../gcc4x/gcc/fortran/resolve.c:7405
#11 0x08084032 in gfc_parse_file () at ../../gcc4x/gcc/fortran/parse.c:3248
#12 0x080a0b10 in gfc_be_parse_file (set_yydebug=0) at ../../gcc4x/gcc/fortran/f95-lang.c:305
#13 0x082b4bcd in toplev_main (argc=2, argv=0xbfbfe8a3) at ../../gcc4x/gcc/toplev.c:1051
#14 0x080d795b in main (argc=2, argv=0xbfbfe734) at ../../gcc4x/gcc/main.c:35
This is the expected backtrace.
>How-To-Repeat:
Use FreeBSD-i386 with the newest tcsh code.
Build gfortran from GCC repository.
Try to debug this program
mobile:kargl[256] cat b.f90
character(len=2.3) :: s
print *, len(s)
end
>Fix:
Revert the recent tcsh upgrade.
>Release-Note:
>Audit-Trail:
>Unformatted:
>Environmentle:kargl[255] uname -a
FreeBSD mobile.kargl.org 7.0-CURRENT FreeBSD 7.0-CURRENT #2: Sun Apr 29 10:49:22 PDT 2007 root@mobile.kargl.org:/usr/obj/usr/src/sys/MOBILE i386
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