Crashes in cmake subprocesses since 3.6.0

[Jeremy Drake]

On Mon, 31 Mar 2025, Christoph Reiter via Cygwin wrote:

> Starting with 3.6.0 when cmake calls into make/ninja/gcc there is a chance of
> that failing, for example like this:
>
> CMake Error: Generator: build tool execution failed, command was:
> /usr/bin/cmake.exe -E env VERBOSE=1 /usr/bin/make.exe -f Makefile
> cmTC_c87e2/fast
>
> * Problem starts with cygwin 3.6.0

I've also reproduced this with cygwin 3.7.0-0.19.g6c5537c0298e, but it
doesn't reproduce as readily as with cygwin 3.6.0-1.