[Bug mi/31324] -var-create: slowdown due to children printing

["dmitry.neverov at jetbrains dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=31324

--- Comment #3 from Dmitry Neverov <dmitry.neverov at jetbrains dot com> ---
Created attachment 15348
  --> https://sourceware.org/bugzilla/attachment.cgi?id=15348&action=edit
slow array pretty-printing reproducible

> I wouldn't expect this to be slow.

It is slow because children's pretty-printing result is included into
the parent value. The attached script is instant with gdb 13.2, but
takes several seconds in gdb 14.1.

> Normally it's better to just fix the pretty-printer though,
> since if that is slow it's going to impact interactive
> use as well.

The pretty-printer can be slow due to slow symbol lookup
(e.g. https://sourceware.org/bugzilla/show_bug.cgi?id=30520). It is
not clear how to fix it.

In an interactive front-end with gdb 13.2 there was a slow-down only
when array is expanded, so users could avoid it if they didn't want to
inspect array elements.

-- 
You are receiving this mail because:
You are on the CC list for the bug.