MSYS2 bash.exe wont quit
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- Dominant language
- C
- Stars
- 240
- Forks
- 60
- Avg merge
- 2d 3h
- Merged PRs (30d)
- 1
Description
The program in the following repo demonstrates a bug of bash.exe.
https://github.com/mrev11/msys2-bugreport
In the state after the 2026-06-17 update the program works as expected.
[2026-06-17T10:47:24+0200] [PACMAN] Running 'pacman -Syu'
[2026-06-17T10:47:24+0200] [PACMAN] synchronizing package lists
[2026-06-17T10:47:26+0200] [PACMAN] starting core system upgrade
[2026-06-17T10:47:26+0200] [PACMAN] starting full system upgrade
[2026-06-17T10:47:47+0200] [ALPM] transaction started
[2026-06-17T10:47:48+0200] [ALPM] upgraded binutils (2.46-2 -> 2.46.1-1)
[2026-06-17T10:47:51+0200] [ALPM] upgraded mingw-w64-clang-x86_64-headers (14.0.0.r92.g818fa6510
[2026-06-17T10:47:52+0200] [ALPM] upgraded mingw-w64-clang-x86_64-crt (14.0.0.r92.g818fa6510-1 -
[2026-06-17T10:47:52+0200] [ALPM] upgraded mingw-w64-clang-x86_64-libwinpthread (14.0.0.r92.g818
[2026-06-17T10:47:52+0200] [ALPM] upgraded mingw-w64-clang-x86_64-pkgconf (1~2.5.1-1 -> 1~2.5.1-
[2026-06-17T10:47:52+0200] [ALPM] upgraded mingw-w64-clang-x86_64-winpthreads (14.0.0.r92.g818fa
[2026-06-17T10:47:52+0200] [ALPM] transaction completed
[2026-06-17T10:47:52+0200] [ALPM] running 'texinfo-install.hook'...
[2026-06-17T10:47:58+0200] [PACMAN] Running 'pacman -Syu'
[2026-06-17T10:47:58+0200] [PACMAN] synchronizing package lists
[2026-06-17T10:47:59+0200] [PACMAN] starting core system upgrade
[2026-06-17T10:47:59+0200] [PACMAN] starting full system upgrade
But recently (as of 2026-07-22) the program hangs, because after some time
the MSYS2 bash.exe will not quit any more.
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked mrev11/msys2-bugreport reproduction and compare its behavior before and after the 2026-07-22 update. Investigate the MSYS2 bash.exe exit path and the listed pacman update context; done means the program completes without bash.exe hanging.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- bash, c
- Domain
- operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Needs clarification
- Newbie friendliness
- 48/100