Re: Question about bignum usage

[Eli Zaretskii <eliz@gnu.org>]

> From: Gerd Möllmann <gerd.moellmann@gmail.com>
> Date: Thu, 20 Jun 2024 07:59:36 +0200
> 
> In the igc branch, I see that Emacs creates bigints in an rate that I
> find astonishsing, thousands in a few minutes. Most backtraces look like
> this.
> 
>   * frame #0: 0x00000001000f9ce8 emacs`make_integer_mpz [inlined] make_bignum_bits(bits=71) at bignum.c:99:7 [opt]
>     frame #1: 0x00000001000f9ce8 emacs`make_integer_mpz at bignum.c:170:10 [opt]
>     frame #2: 0x00000001001beb48 emacs`decode_time_components(form=TIMEFORM_HI_LO_US_PS, high=<unavailable>, low=<unavailable>, usec=<unavailable>, psec=<unavailable>, result=0x000000016fdfde50, dresult=0x0000000000000000) at timefns.c:812:27 [opt]
>     frame #3: 0x00000001001be7e4 emacs`list4_to_timespec(high=<unavailable>, low=<unavailable>, usec=<unavailable>, psec=<unavailable>, result=0x000000016fdfdec0) at timefns.c:1008:7 [opt]
>     frame #4: 0x00000001000e1c98 emacs`timer_check [inlined] decode_timer(timer=(struct Lisp_Vector *) $2 = 0x000000010ab42538, result=0x000000016fdfdec0) at keyboard.c:4648:10 [opt]
>     frame #5: 0x00000001000e1c54 emacs`timer_check at keyboard.c:4713:10 [opt]
>     frame #6: 0x00000001000e1b44 emacs`timer_check at keyboard.c:4856:18 [opt]
>     frame #7: 0x00000001000df51c emacs`detect_input_pending_run_timers [inlined] readable_events(flags=1) at keyboard.c:3577:5 [opt]
>     frame #8: 0x00000001000df518 emacs`detect_input_pending_run_timers [inlined] get_input_pending(flags=1) at keyboard.c:7859:42 [opt]
>     frame #9: 0x00000001000df508 emacs`detect_input_pending_run_timers(do_display=true) at keyboard.c:11563:5 [opt]
> 
> Is this expected?

Why not?  Time values are known to produce bignums, yes.  What does
list-timers show on that system?