Re: [RFC, experimental] save_{excursion,restriction}

[Dmitry Antipov]

On 07/27/2012 07:51 AM, Chong Yidong wrote:

> With your revision 109221,
>
> emacs -Q
> M-x delete-trailing-whitespace RET
> M-x garbage-collect RET
> ---->
> Breakpoint 1, abort () at emacs.c:365
> 365       kill (getpid (), SIGABRT);
> (gdb) bt
> #0  abort () at emacs.c:365
> #1  0x00000000005eb60b in mark_object (arg=26719011) at alloc.c:6167
> #2  0x00000000005eb6da in mark_object (arg=19905638) at alloc.c:6185
> #3  0x00000000005eb6da in mark_object (arg=19903334) at alloc.c:6185
> #4  0x00000000005e92d8 in mark_maybe_object (obj=19903334) at alloc.c:4532
> #5  0x00000000005e9637 in mark_memory (start=0x7fffffffc688,
>      end=0x7fffffffdf78) at alloc.c:4695
>
> Please fix this ASAP or revert (the crashes are frequent and annoying).
> Next time, I suggest running with such changes for a few days to weed
> out this kind of obvious problem.

OK, reverted in 109226. Note it was running normally for a few hours
for me without any problems. Now I got it reproduced (it looks like
GC misuses some value found on C stack), and I can't say that this
is an obvious problem.

Dmitry