Re: emacs from head segfaults when run with -nw

[Sascha Wilde]

Eli Zaretskii <address@hidden> wrote:

>> From: Sascha Wilde <address@hidden>
>> Date: Fri, 16 Apr 2010 10:26:09 +0200
>> Cc: address@hidden
>> 
>> "Alfred M. Szmidt" <address@hidden> wrote:
>> 
>> > When I start emacs with -nw, it segfaults, if I run with -Q it
>> > segfaults in a different place,
>> [...]
>> > But without -nw it works expecdetly in X11.
>> >
>> > This is with -nw, and no -Q:
>> 
>> For the record: I experience the same problem.  Since about start of
>> April Emacs from trunk segfaults on me regularly sometimes instantly
>> sometimes after some minutes of use.  
>
> Is your backtrace similar to Alfred's?  Can you show it?

I think it looks quite alike,  but I haven't done a not optimized build
yet.  Here is what I have anyway:

Program received signal SIGSEGV, Segmentation fault.
0x08177b13 in mark_object (arg=-1) at 
/home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5695
5695          FLOAT_MARK (XFLOAT (obj));
(gdb) bt
#0  0x08177b13 in mark_object (arg=-1)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5695
#1  0x08177a8e in mark_object (arg=171118298)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5574
#2  0x08177f9f in mark_vectorlike (ptr=0xa351998)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5368
#3  0x08177a83 in mark_object (arg=141516934)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5573
#4  0x08177a78 in mark_object (arg=171285954)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5572
#5  0x08177f9f in mark_vectorlike (ptr=0x86d3b30)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5368
#6  0x08177a83 in mark_object (arg=140104546)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5573
#7  0x0817796a in mark_object (arg=140039334)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5685
#8  0x0817796a in mark_object (arg=139792318)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5685
#9  0x08177a78 in mark_object (arg=141516422)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5572
#10 0x08177a78 in mark_object (arg=139995414)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5572
#11 0x0817796a in mark_object (arg=139274966)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5685
#12 0x08177a8e in mark_object (arg=139058530)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5574
#13 0x0817796a in mark_object (arg=139267526)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5685
#14 0x0817796a in mark_object (arg=139267454)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5685
#15 0x08177a8e in mark_object (arg=139443802)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5574
#16 0x0817796a in mark_object (arg=139266246)
    at /home/wilde/src/stdsrc/emacs/emacs-wilde.hg/src/alloc.c:5685
---Type <return> to continue, or q <return> to quit---
Quit
(gdb) xbacktrace 
"require" (0xbff3a0f4)
"byte-code" (0xbff3a1c4)
"require" (0xbff3a4d4)
"byte-code" (0xbff3a594)
"c-mode" (0xbff3a874)
"set-auto-mode-0" (0xbff3a9e4)
"set-auto-mode" (0xbff3aae0)
"normal-mode" (0xbff3ae34)
"after-find-file" (0xbff3afb4)
"find-file-noselect-1" (0xbff3b124)
"find-file-noselect" (0xbff3b2a4)
"find-file" (0xbff3b424)
"call-interactively" (0xbff3b674)
(gdb) p obj
$1 = <value optimized out>

If it helps I can make an unoptimized build and send more complete
debugging output...

cheers
sascha
-- 
Sascha Wilde : VI is to EMACS as masturbation is to making love:
             : effective and always available but probably not your
             : first choice...