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From: Mark Hepburn <[EMAIL PROTECTED]>
Subject: scm: segfaults on startup (on ppc)
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Package: scm
Version: 5d6-3.1
Severity: normal


scm segfaults on startup on my ppc systems:

$ scm
SCM version 5d6, Copyright (C) 1990-1999 Free Software Foundation.
SCM comes with ABSOLUTELY NO WARRANTY; for details type `(terms)'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `(terms)' for details.
Segmentation fault
$

The tail of an strace is as follows:
stat("/usr/bin/scm", {st_mode=S_IFREG|0755, st_size=400308, ...}) = 0
brk(0x10079f34)                         = 0x10079f34
brk(0x1007a000)                         = 0x1007a000
brk(0x1007b000)                         = 0x1007b000
brk(0x1007c000)                         = 0x1007c000
brk(0x1007d000)                         = 0x1007d000
open("/usr/bin/Init5d6.scm", O_RDONLY)  = -1 ENOENT (No such file or directory)
open("/usr/lib/Init5d6.scm", O_RDONLY)  = -1 ENOENT (No such file or directory)
open("/usr/lib/scm/Init5d6.scm", O_RDONLY) = 3
close(3)                                = 0
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
write(2, "SCM version 5d6, Copyright (C) 1"..., 250) = 250
brk(0x1007e000)                         = 0x1007e000
brk(0x1007f000)                         = 0x1007f000
brk(0x10080000)                         = 0x10080000
brk(0x100b1000)                         = 0x100b1000
brk(0x100b2000)                         = 0x100b2000
gettimeofday({1052453875, 700299}, {4294966696, 0}) = 0
times({tms_utime=1, tms_stime=0, tms_cutime=0, tms_cstime=0}) = 70505870
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++

The stack trace provided by gdb gives:
(gdb) run
Starting program: /usr/bin/scm 
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
SCM version 5d6, Copyright (C) 1990-1999 Free Software Foundation.
SCM comes with ABSOLUTELY NO WARRANTY; for details type `(terms)'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `(terms)' for details.
(no debugging symbols found)...
Program received signal SIGSEGV, Segmentation fault.
0x1003b180 in scm_eval_values ()
(gdb) trace
trace command requires an argument
(gdb) backtrace
#0  0x1003b180 in scm_eval_values ()
#1  0x1003ab88 in ceval ()
#2  0x1002d284 in scm_eval_string ()
#3  0x1005432c in scm_evstr ()
#4  0x1003fe78 in init_eval ()
#5  0x100285c4 in init_scm ()
#6  0x100289f4 in scm_init_from_argv ()
#7  0x10029278 in main ()
#8  0x0fc3fe04 in __libc_start_main () from /lib/libc.so.6
(gdb)

I haven't had a look at the source yet; let me know if any more
information would be helpful though (especially if it can't be reproduced
on other platforms)

Cheers,
/Mark.

-- System Information
Debian Release: testing/unstable
Kernel Version: Linux markh 2.4.20-ben1 #4 Mon Jan 13 11:53:25 EST 2003 ppc 
unknown unknown GNU/Linux

Versions of the packages scm depends on:
ii  libc6          2.3.1-16       GNU C Library: Shared libraries and Timezone
ii  libncurses5    5.3.20021109-2 Shared libraries for terminal handling
ii  libreadline4   4.3-4          GNU readline and history libraries, run-time
ii  slib           2d4-2          Portable Scheme library.
ii  xlibs          4.2.1-6        X Window System client libraries

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Version: 5.9-5

While I can confirm that older versions did segfault on powerpc, the
new one does not.  I did not close this in the changelog because I
cannot see a particular change responsible for the fix.


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