Regular crash in modifying regex

Kornel Benko kornel at lyx.org
Thu Jan 14 09:19:13 UTC 2021


Am Thu, 14 Jan 2021 04:15:18 -0500
schrieb Richard Kimberly Heck <rikiheck at lyx.org>:

> On 1/14/21 3:45 AM, Kornel Benko wrote:
> > Am Thu, 14 Jan 2021 07:53:16 +0100
> > schrieb Jürgen Spitzmüller <spitz at lyx.org>:
> >  
> >> Am Donnerstag, dem 14.01.2021 um 00:58 +0100 schrieb Kornel Benko:  
> >>> How to reproduce
> >>>
> >>> 1.) Open lyx file e.g. Additional.lyx
> >>> 2.) select AdvFind
> >>> 3.) select regexp-mode
> >>> 4.) insert any text not in this file
> >>> 5.) select search for section
> >>> 6.) change to not ignore format
> >>> 7.) start search
> >>> 8.) cancel the search (with escape)
> >>> 9.) clean the regex content and try to insert anything ==> crash
> >>>
> >>> BTW, lyx2.3 does not crash.    
> >> Does not crash for me. Can you produce a backtrace?
> >>
> >> Jürgen
> >>  
> > Yes, attached. Last commit was fcea6c47.  
> 
> That is even weirder. You're getting an assertion, on the ground that a
> TOC is being requested that does not yet exist, and the type is
> "tableofcontents", which is supposed always to exist. But maybe that
> makes sense if it is the TOC for the F&R Buffer itself that is being
> queried: Probably it does not have a TOC at all.
> 
> You might try reverting the problematic commit and see if that helps
> (i.e., if master minus that commit asserts). That would at least give us
> another data point.
> 
> Oh, I see it! The TocBackend::toc method has two versions: A const one
> and a non-const one. Because of the const patch, the const one is being
> called, I think. It asserts when the requested TOC does not exist,
> whereas the other one just creates it and moves along. Though now I'm
> puzzled why I don't get a crash. But that makes me think that this has
> just revealed some other bug.
> 
> Riki
> 
> 

Good news :)

	Kornel
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