[ clisp-Bugs-1376258 ] segfault on m68k

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Bugs item #1376258, was opened at 2005-12-08 08:08
Message generated for change (Comment added) made by sds
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https://sourceforge.net/tracker/?func=detail&atid=101355&aid=1376258&group_id=1355

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Category: clisp
Group: segfault
>Status: Pending
Resolution: None
Priority: 5
Submitted By: Peter Van Eynde (pvaneynd)
Assigned to: Sam Steingold (sds)
Summary: segfault on m68k

Initial Comment:
CC="gcc-2.95 -g -D SAFETY=3 -D NO_MULTIMAP_SHM   -D NO_MULTIMAP_FILE -D NO_SINGLEMAP -D NO_TRIVIALMAP"

$ gdb ./lisp.run
GNU gdb 6.3.90_20051119-debian
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 "m68k-linux-gnu"...Using
host libthread_db library "/lib/libthread_db.so.1".

Breakpoint 1 at 0x80029912: file eval.d, line 4937.
Breakpoint 2 at 0x80026f06: file eval.d, line 4020.
Breakpoint 3 at 0x80023740: file eval.d, line 2880.
Breakpoint 4 at 0x8002b75e: file eval.d, line 5905.
Breakpoint 5 at 0x8000e48a: file spvw_garcol.d, line 2430.
Watchpoint 6: back_trace
Breakpoint 7 at 0x800121fe: file spvw.d, line 658.
Breakpoint 8 at 0x80005cee: file spvw.d, line 479.
Breakpoint 9 at 0x80005d80: file spvw.d, line 494.
Breakpoint 10 at 0x800df1ac: file error.d, line 349.
Breakpoint 11 at 0x800df146: file error.d, line 326.
Breakpoint 12 at 0x800dfe6e: file errunix.d, line 680.
Breakpoint 13 at 0x800dfef2: file errunix.d, line 695.
Breakpoint 14 at 0x800e006c: file error.d, line 425.
Breakpoint 15 at 0x800dff86: file errunix.d, line 723.
Num Type           Disp Enb Address    What
1   breakpoint     keep n   0x80029912 in funcall at
eval.d:4937
        xout fun
2   breakpoint     keep n   0x80026f06 in apply at
eval.d:4020
        xout fun
3   breakpoint     keep n   0x80023740 in eval at
eval.d:2880
        xout form
4   breakpoint     keep n   0x8002b75e in
interpret_bytecode_ at eval.d:5905
        xout closure
5   breakpoint     keep n   0x8000e48a in gar_col at
spvw_garcol.d:2430
6   watchpoint     keep n              back_trace
        zbacktrace
        continue
7   breakpoint     keep y   0x800121fe in
fehler_notreached at spvw.d:658
8   breakpoint     keep y   0x80005cee in SP_ueber at
spvw.d:479
9   breakpoint     keep y   0x80005d80 in STACK_ueber
at spvw.d:494
10  breakpoint     keep y   0x800df1ac in fehler at
error.d:349
11  breakpoint     keep y   0x800df146 in prepare_error
at error.d:326
12  breakpoint     keep y   0x800dfe6e in OS_error at
errunix.d:680
13  breakpoint     keep y   0x800dfef2 in OS_file_error
at errunix.d:695
14  breakpoint     keep y   0x800e006c in
OS_filestream_error at error.d:425
15  breakpoint     keep y   0x800dff86 in errno_out_low
at errunix.d:723
Function "sigsegv_handler_failed" not defined.
.gdbinit:163: Error in sourced command file:
No symbol "byteptr" in current context.
(gdb) run -B . -N locale -Efile UTF-8 -Eterminal UTF-8
-Emisc 1:1 -norc -m 1400KW
Starting program:
/home/pvaneynd/clisp/clisp-upstream/debian/build/lisp.run
-B . -N locale -Efile UTF-8 -Eterminal UTF-8 -Emisc 1:1
-norc -m 1400KW
STACK depth: 44779

Program received signal SIGSEGV, Segmentation fault.
0x80014acc in init_symbol_functions () at spvw.d:1148
1148          Symbol_function(ptr->name) =
subr_tab_ptr_as_object(ptr);
(gdb) backtrace
#0  0x80014acc in init_symbol_functions () at spvw.d:1148
#1  0x800165d4 in initmem () at spvw.d:1501
#2  0x8001c2e8 in init_memory (p=0x801dae62) at spvw.d:2906
#3  0x80017bc6 in main (argc=14, argv=0xeffff4b4) at
spvw.d:3252
(gdb) print ptr
$4 = (subr_t *) 0x801c3d6c
(gdb) print *ptr
$5 = {GCself = {one_o = 2149334382}, tfl = 268566568,
name = {one_o = 47}, keywords = {one_o = 47}, function
= 0x8001d078 <C_funtabref>,
  argtype = 1, req_anz = 1, opt_anz = 0, rest_flag = 0
'\0', key_flag = 0 '\0', key_anz = 0, seclass = 0}
(gdb) print ptr->function
$10 = (lisp_function_t) 0x8001d078 <C_funtabref>
(gdb) print ptr->name
$11 = {one_o = 47}


If there is anything else I can do, just yell.



----------------------------------------------------------------------

>Comment By: Sam Steingold (sds)
Date: 2005-12-12 10:10

Message:
Logged In: YES 
user_id=5735

please try "xout ptr->name".
this should print the object in a somewhat lispy way.
"Symbol_function" assumes a symbol argument, 
so if ptr->name is not a symbol, it _will_ crash.

note that dotimes is a macro, so you cannot know whether 
the crash is actually on this specific line.

note also that gcc 2.95 is known to miscompile some parts
of CLISP (at least with -O that you are not using).
it might be a good idea to try gcc 3.

thanks for your bug report.
I am marking it pending, it will re-open when you respond.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=101355&aid=1376258&group_id=1355