Re: Display performance degradation

[Andreas Schwab]

YAMAMOTO Mitsuharu <address@hidden> writes:

>   4490                    if (XINT (XCAR (val)) == 0)
>   4491                      {
>   4492                        font_clear_cache (f, XCAR (val), 
> driver_list->driver);
>   4493                        XSETCDR (cache, XCDR (val));
>   4494                      }
>   4495                  }
>
> At line 4490, XCAR (val) is expected to be of type Lisp integer.  But
> it is also passed to font_clear_cache at line 4492, which seems to
> expect the value of `val' as of line 4488 rather than the one assigned
> at line 4489.

If the condition is ever true then Emacs crashes.  I've checked in a
fix.  But then, I don't think this function is ever more than a no-op
anyway, since as soon as NUM-FRAMES becomes zero the cache is cleared
automatically anyway.

Andreas.

-- 
Andreas Schwab, address@hidden
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