bug#19482: Changing to big font cause display problem

[张海君]

Yes. 
Emacs Version: 24.4.90. Downloaded from http://emacsformacosx.com/builds.

> 在 2015年2月14日，02:28，martin rudalics <rudalics@gmx.at> 写道：
> 
>> Open emacs, and run the following code:
>> (set-frame-font "Menlo:size=30")
>> 
>> Then text in "*scratch*" buffer disappeared and I can't make the text 
>> visible with scrolling up or down.
>> After resizing Emacs's window size, text is visible.
>> 
>> It seems that after changing font size Emacs doesn't known the real window 
>> size and so can't display
>> correctly.
> 
> Can you still see this?  If so please tell us which version of Emacs you
> use and how you built it.
> 
> Thanks, martin