bug#23912: 25.0.95; Abort in gc when working with streams

[Michael Heerdegen]

Eli Zaretskii <eliz@gnu.org> writes:

> > From: Michael Heerdegen <michael_heerdegen@web.de>
> > Cc: 23912@debbugs.gnu.org
> > Date: Tue, 12 Jul 2016 23:53:31 +0200
> > 
> > #0 0x00007ffff1930c19 in raise () from
> > /lib/x86_64-linux-gnu/libpthread.so.0
> > #1 0x000000000054d2fe in terminate_due_to_signal (sig=6,
> > backtrace_limit=40) at emacs.c:381
> > #2  0x00000000005715d9 in emacs_abort () at sysdep.c:2247
> > #3 0x00000000005c9c1d in garbage_collect_1 (end=0x7fffffff5868) at
> > alloc.c:5662
> > #4  0x00000000005ca55d in Fgarbage_collect () at alloc.c:5979
> > #5  0x000000000054afbc in maybe_gc () at lisp.h:4654
>
> I don't understand how this could have happened.  The only place that
> sets abort_on_gc true is prin1-to-string, but it is not in the
> backtrace.  So somehow that setting was not reset at the end of
> prin1-to-string, and it looks like the only way that could have
> happened is if some code triggered by prin1-to-string set
> throw-on-input or called while-no-input.  Is this likely to have
> happened during what you did?

Yes, it's very likely.

Michael.