Sorry I've missent a mail privately, again.
Now posting to the ML...

> Am 09.09.2018 um 11:48 schrieb Lemures Lemniscati:
> > Thank you for maintainers.
> > I apologize for bothering you.
> >
> > Reporting about cases:
> >    ImageMagick 6.9.9-11 has an issue,
> >    ImageMagick 6.9.10-11 resolves it,
> 
> I can confirm this at least for x86_64, but the annoying thing is that
> it will cause another API bump.
> 
> >    ImageMagick 7.0.8-11 resolves it,
> 
> we have decided to not move yet to 7.x
> 
> > and hoping the current package ImageMagick-6.9.9.11-3 will be updated.
> 
> I put it in the TODO list.
> 
> Regards
> Marco

Thank you, Marco!

I made a modified cygport file from 6.9.10.11-3-src:

(1) Modifying SRC_URI to get the source

SRC_URI="http://www.imagemagick.org/download/${PN}-${PV%.${PV[4]}}-${PV[4]}.tar.xz"


(2) Renaming

  libMagickCore6_5 -> libMagickCore6_6
  libMagickWand6_5 -> libMagickWand6_6

and so on...

According to https://abi-laboratory.pro/index.php?view=objects_report&l=imagemagick&v1=6.9.10-10&v2=6.9.10-11
and https://abi-laboratory.pro/index.php?view=objects_report&l=imagemagick&v1=6.9.9-10&v2=6.9.9-11

sonames in 6.9.10-11 are 
  libMagick++-6.Q16.so.8.0.0
  libMagickCore-6.Q16.so.6.0.0
  libMagickWand-6.Q16.so.6.0.0

and sonames in 6.9.9-11 are 
  libMagick++-6.Q16.so.8.0.0
  libMagickCore-6.Q16.so.5.0.0
  libMagickWand-6.Q16.so.5.0.0

(3) Removing

  PATCH_URI="AC_CHECK_SIZEOF.patch"

Though I don't know whether AC_CHECK_SIZEOF.patch is necessary,
packages seem to be built successfully without it.



Attached a patch file for an example.
Is it acceptable?

Regards,

--
Lemures Lemniscati