Emacs crashing after M-x compile after Cygwin updates

Emacs crashing after M-x compile after Cygwin updates

[Bruce Mardle]

Hi, all.
I've been happily compiling simple C programs under Emacs (emacs-w32) under Cygwin. Yesterday I wanted to install libedit-dev. While I was doing that, setup...exe marked a few dozen other packages for upgrades. I didn't notice which. Now, if I `emacs hello.c` and M-x compile gcc -o hello hello.c the compilation works... but then, a few seconds later, Emacs SEGVs. emacs-nox does the same but without the delay.
I've tried Emacs versions 27.2-1, 28.0.60-1.f7e6c199bf, and 27.1. Then, in case it was gcc doing something naughty, I changed that from version 11.2.0 to 10.2.0-1. Same problem all the way. Running gcc from the terminal emulator works (but then I don't get to use Emacs' M-x ` and the like).
I'm using 64-bit Windows 7 Pro [blush]. Is it still supposed to work on that? I don't seem to have a problem with a laptop running Windows 10.
`uname -r` returns 3.3.4(0.341/5/3).
I've spent a few hours looking at the mailing list archives (probably incompetently) and Googling, without success.

Re: Emacs crashing after M-x compile after Cygwin updates

[Takashi Yano]

On Mon, 4 Apr 2022 13:08:27 +0000 (UTC)
Bruce Mardle wrote:
> Hi, all.
> I've been happily compiling simple C programs under Emacs (emacs-w32) under Cygwin. Yesterday I wanted to install libedit-dev. While I was doing that, setup...exe marked a few dozen other packages for upgrades. I didn't notice which. Now, if I `emacs hello.c` and M-x compile gcc -o hello hello.c the compilation works... but then, a few seconds later, Emacs SEGVs. emacs-nox does the same but without the delay.
> I've tried Emacs versions 27.2-1, 28.0.60-1.f7e6c199bf, and 27.1. Then, in case it was gcc doing something naughty, I changed that from version 11.2.0 to 10.2.0-1. Same problem all the way. Running gcc from the terminal emulator works (but then I don't get to use Emacs' M-x ` and the like).
> I'm using 64-bit Windows 7 Pro [blush]. Is it still supposed to work on that? I don't seem to have a problem with a laptop running Windows 10.
> `uname -r` returns 3.3.4(0.341/5/3).
> I've spent a few hours looking at the mailing list archives (probably incompetently) and Googling, without success.

Perhaps this is the same issue with:
https://cygwin.com/pipermail/cygwin/2022-March/251162.html
which is already fixed in cygwin git head.
https://cygwin.com/pipermail/cygwin-patches/2022q1/011865.html

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>

Re: Emacs crashing after M-x compile after Cygwin updates

[Achim Gratz]

Bruce Mardle via Cygwin writes:
> Hi, all.  I've been happily compiling simple C programs under Emacs
> (emacs-w32) under Cygwin. Yesterday I wanted to install
> libedit-dev. While I was doing that, setup...exe marked a few dozen
> other packages for upgrades. I didn't notice which.

You can still find that out today by looking at /var/log/setup.log and
(for the immediately prevuious run of setup.exe) in much more detail in
/var/log/setup.log.full -- so do not start setup.exe again in case you
think there might be something you need to check in detail before
copying that file someplace safe.


Regards,
Achim.
-- 
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