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xsrc/44344: xterm SIGSEGV in utf-8 mode
>Synopsis: xterm SIGSEGV in utf-8 mode
>Arrival-Date: Sat Jan 08 02:55:00 +0000 2011
>Originator: David A. Holland
>Release: NetBSD 5.99.41 (20101130)
System: NetBSD macaran 5.99.41 NetBSD 5.99.41 (MACARAN) #3: Tue Nov 30 21:52:01
EST 2010 dholland@macaran:/usr/src/sys/arch/amd64/compile/MACARAN amd64
When utf-8 mode is enabled, xterm dumps core on a fairly regular basis.
Start xterm, turn on utf-8 mode with ctrl-rightbutton or resources, do
"find /usr/pkgsrc" or something else that generates a lot of output,
watch it core.
#0 0x00007f7ff989982e in _malloc_prefork () from /usr/lib/libc.so.12
#1 0x00007f7ff9899ac3 in free () from /usr/lib/libc.so.12
#2 0x000000000042a945 in addScrollback ()
#3 0x0000000000427017 in saveEditBufLines ()
#4 0x0000000000429370 in ScrnDeleteLine ()
#5 0x000000000043054a in xtermScroll ()
(That's not really _malloc_prefork, it's something gdb doesn't have
symbols for. AFAICT this is a garden-variety malloc crash arising from
corrupting the arena.)
You may need the resource setting
or the equivalent commandline option to see the same behavior I do.
It seems that if you set
which changes the allocation behavior for the scroll buffer, it hangs
instead of crashing. I haven't yet gone to see where.
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