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Re: Segmentation fault in chunk_free () with XEmacs


>>>>> Yasushi Shoji writes:

 > hello,
 > can someone else reproduce this segfault?
Yes.
 > or, is it just my system? (high optimization level?) 
I don't think so - but better ask on the XEmacs lists.

 > comments from libc with lower optimization will be appreciated.

 > kernel: Linux 2.2.13pre11
 > Compiler: GCC 2.95.1
 > C Library: GNU libc 2.1.2 compiled with -O6 -mpentium
I compiled with -O2/-O3 (don't remember).

 > running xemacs with option '-t' gives me:

 > /opt/src/xemacs-21.2.19/src$ ./xemacs -t
 > XEmacs: Option `-t' requires an argument
 > Segmentation fault (core dumped)

 > /opt/src/xemacs-21.2.19/src$ ldd ./xemacs 
 >         libdl.so.2 => /lib/libdl.so.2 (0x4001a000)
 >         libdb.so.3 => /lib/libdb.so.3 (0x4001d000)
 >         libncurses.so.4 => /usr/lib/libncurses.so.4 (0x4005a000)
 >         libm.so.6 => /lib/libm.so.6 (0x4009b000)
 >         libc.so.6 => /lib/libc.so.6 (0x400b9000)
 >         /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)

 > (gdb) bt
 > #0  0x4010a5f5 in chunk_free () from /lib/libc.so.6
 > #1  0x4010a4c8 in free () from /lib/libc.so.6
 > #2  0x400da062 in exit () from /lib/libc.so.6
 > #3  0x8084db8 in fatal (fmt=0x81918a0 "Option `%s' requires an argument\n") at emacs.c:293
 > #4  0x8085fb8 in sort_args (argc=2, argv=0xbffff904) at emacs.c:1894
 > #5  0x80853c2 in xemacs_21_2_b19_i586_pc_linux (argc=2, argv=0xbffff904, envp=0xbffff910, 
 >     restart=0) at emacs.c:588
 > #6  0x80869b4 in main (argc=2, argv=0xbffff904, envp=0xbffff910) at emacs.c:2188

You might want to try debugging it.

Andreas
-- 
 Andreas Jaeger   
  SuSE Labs aj@suse.de	
   private aj@arthur.rhein-neckar.de

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