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Re: Invisible bar line and wide lyric produces "mis-predicted force" err

From: James Lowe
Subject: Re: Invisible bar line and wide lyric produces "mis-predicted force" error.
Date: Thu, 19 Apr 2018 15:13:37 +0100 (BST)


On Wed, 18 Apr 2018 15:42:42 -0700, Aaron Hill <address@hidden> wrote:

> I encountered this when typesetting a piece that needs fairly wide 
> stanza markings.  One piece worked fine, while another failed with 
> "mis-predicted force" errors.  While reducing the repro, it seemed the 
> main difference was the presence of an invisible bar line (i.e. \bar "") 
> earlier in the score along with some wide lyrics.  Without that bar line 
> present or by narrowing the stanza marking, the piece that had failed no 
> longer reported any errors.
> For reference, I am using version 2.19.80 (MinGW) on Windows 10 Pro 
> 64-bit (16299.371).
> Here is a minimal repro using a simple lyric instead of a stanza 
> marking:
> %%%%
> % The combination of an invisible bar line and a wide lyric produces:
> % "programming error: mis-predicted force, 108.120472 ~= 108.482555"
> \version "2.19.80"
> { r2 \bar "" c'2 } \addlyrics { "mmmmmm" }
> %%%%
> The only references I could find to "mis-predicted force" are in 
> relation to an issue regarding grace notes and possible floating-point 
> arithmetic issues in the Windows/MinGW build.  Presuming this is 
> related, here is hoping this repro can help shed some light on the 
> underlying issue.

While not very helpful to you personally, it maybe a useful point of reference 
for the other devs in that I can compile this without issue using latest 
current master (2.21.0) on Ubuntu 16.10.



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