Re: Unexec dumping results in "Segmentation fault" on Windows Msys2

[Nikolay Kudryavtsev]

Binutils triggered segfault:

$ temacs.exe -Q
Warning: Lisp directory 
'd:/Emacs/configurations/msys2-brake-test/src/lisp': No such file or 
directory
Cannot open load file: No such file or directory, loadup.el

(gdb) p &stack_bottom_variable
$1 = (void **) 0xbd3cbff6c8

Emacs configure logs using binutils 2.35 and 2.36 both have --enable-lto 
and nothing in them seems to be any different between each other...

Master crash:

I went for bisecting hoping to find that simple localized change. It was 
not my intention to tease you, at least not since the second letter. ;-) 
I can grab as many full backtraces or do other tests as needed. It's 
just that the GDB session looked completely fine to me in my admittedly 
limited understanding of low level Emacs internals. The crash happens 
when bootstrap-emacs is doing dumping(same place as the other problem). 
Here's a couple backtraces:

https://gist.githubusercontent.com/sg2002/32ea64634a89e7b407f50e29b4ab5f7e/raw/aa0bcc517e1a4de733a9dc2678f8c45daefb95f9/gistfile1.txt

https://gist.githubusercontent.com/sg2002/d9cfaf1268973b20d66d79f5df575498/raw/06091019c1d30b863e6000fb642e09316d82a344/gistfile1.txt

As for whether this is even repeatable with the original MinGW, I'd say 
probably not, but I'm going to test that and report results later.