Regression in msys2-runtime 3.6.10 - some apps hang, i.e. `make`, `git`

Description / Steps to reproduce the issue

OS: Windows 11 (10.0.26200)

$ pacman -Q msys2-runtime
msys2-runtime 3.6.10-2

$ make --version
GNU Make 4.4.1
Built for x86_64-pc-cygwin

$ which make
/usr/bin/make

Steps to reproduce - run some big parallel builds (with make -j...)

Expected behavior

No hangs.

Actual behavior

It's random efffect, I can't get simple environment to repeat the problem. I have many projects and batch that build it all - on some project make just hangs, usually after last compiled file. There are no child processes (gcc runs ok), usually only two make.exe processes remain.

Temporary solution - switch back msys-2.0.dll to version 3.6.9 - it works ok.

Verification

• I have verified that my MSYS2 is up-to-date before submitting the report (see https://www.msys2.org/docs/updating/)

Windows Version

MSYS_NT-10.0-26200 ic-win11 3.6.10-8fbd9808.x86_64 2026-07-31 07:26 UTC x86_64 Msys

Are you willing to submit a PR?

No response

Start by comparing msys-2.0.dll versions 3.6.10 and 3.6.9, then reproduce the hang with large parallel builds using make -j. Investigate the remaining make.exe processes and the reported behavior with git; done means the regression is identified and parallel builds no longer hang under msys2-runtime 3.6.10.