Emacs build fails [MSYS2/MINGW64]

[Angelo Graziosi]

Starting with this commit:

Paul Eggert :
Mark _Noreturn error functions as cold
2019-04-18 00:35:18

the build of Emacs up to master (the last I tried is 75ee20364) fails 
(bootstrap-emacs.pdmp SEGMENT FAULT). 

The last commit which builds is

YAMAMOTO Mitsuharu :
src/ftcrfont.c (ftcrfont_glyph_extents): Fix last change
2019-04-18 11:30:17

I have found this with a binary search using the tarballs from 
http://git.savannah.gnu.org/cgit/emacs.git/snapshot.

This seems to affect only Windows build (MSYS2/MINGW64) because master builds 
on GNU/Linux Mint.

To reproduce, update your MSYS2 installation (pacman -Syu) and if you have 
ImageMagick installed, add '--without-imagemagick' to 'configure' otherwise it 
fails at compile time. 

In a MINGW64 shell:

  wget http://git.savannah.gnu.org/cgit/emacs.git/snapshot/emacs-master.tar.gz
  tar -xof emacs-master.tar.gz
  cd emacs-master
  ./autogen.sh
  ./configure [--without-imagemagick]
  make
  [...]
  Loading c:/msys64/tmp/emacs-master/lisp/emacs-lisp/lisp-mode.el (source)...
  Loading c:/msys64/tmp/emacs-master/lisp/progmodes/elisp-mode.el (source)...
  make[1]: *** [Makefile:808: bootstrap-emacs.pdmp] Segmentation fault
  make[1]: uscita dalla directory "/tmp/emacs-master/src"
  make: *** [Makefile:423: src] Error 2


Ciao,
 Angelo.