test/file: remove fragile test case: test_22566

[iblislin]

I'm sorry that i wrote a fragile test case and it make bsd ci unstable :(

Still no idea why there is a race condition in this code, and slow machine (like bsd ci workers) is suffering from freezing.

[vtjnash]

Are we sure this is actually the test that is not running? It's still a good test, maybe we should just disable it with a test for Sys.isbsd() && !Sys.isapple() for now?

[iblislin]

e.g: the following build reports do not contain file testsuit.

• https://julia.iblis.cnmc.tw/#/builders/1/builds/2712
• https://julia.iblis.cnmc.tw/#/builders/1/builds/2721
• https://julia.iblis.cnmc.tw/#/builders/1/builds/2729

And I had attached gdb to the process on my worker, found it is stop at ios.c 's open_cloexec. So I guess that there is a race condition between spawning fifo writer and reader.

The original goal of this test case is to ensure open_cloexec do not throw EINTR, but seems writing test case in Julia is not suitable for testing that low-level behaviour.

[kshyatt]

Do we want to merge this?

[iblislin]

I can do Sys.isbsd() && !Sys.isapple() and look over the status of BSD CI.

[iblislin]

dump?

[vtjnash]

you mean "bump?" :)

[iblislin]

ha

[iblislin]

recent CI freeze is this

    frame #56: 0x0000000800a600b5 libjulia.so.0.7`start_task + 437 at task.c:268 [opt]
(lldb) p jl_lineno
(int) $0 = 1027
(lldb) p jl_filename
(const char *) $1 = 0x000000080d86b0d8 "/home/julia/ci/worker/11rel-amd64/build/test/file.jl"
(lldb) thread list
Process 85568 stopped
* thread #1: tid = 101577, 0x0000000802189498 libc.so.7`__sys_openat + 8
  thread #2: tid = 101161, 0x00000008021892ba libc.so.7`_sigwait + 10

that test case has similar structure with the test case disabled in this PR.

(the lldb info is from this build https://julia.iblis.cnmc.tw/#/builders/1/builds/5426