Lots of testsuite failures on powerpc-unknown-linux-gnu after #118709

[glaubitz]

I have bisected a testsuite regression on powerpc-unknown-linux-gnu after #118709.

When running ./x.py test tests/ui on b99b5e5, the number of testsuite failures is just 34:

    [ui] tests/ui/threads-sendsync/comm.rs
    [ui] tests/ui/threads-sendsync/send-resource.rs
    [ui] tests/ui/threads-sendsync/issue-8827.rs
    [ui] tests/ui/threads-sendsync/task-comm-14.rs
    [ui] tests/ui/threads-sendsync/task-comm-15.rs
    [ui] tests/ui/threads-sendsync/task-comm-3.rs
    [ui] tests/ui/threads-sendsync/task-comm-11.rs
    [ui] tests/ui/threads-sendsync/task-comm-10.rs
    [ui] tests/ui/threads-sendsync/task-comm-7.rs
    [ui] tests/ui/threads-sendsync/task-comm-9.rs
    [ui] tests/ui/threads-sendsync/tcp-stress.rs
    [ui] tests/ui/threads-sendsync/mpsc_stress.rs
    [ui] tests/ui/threads-sendsync/unwind-resource.rs
    [ui] tests/ui/traits/bound/in-arc.rs

test result: FAILED. 15600 passed; 34 failed; 272 ignored; 0 measured; 0 filtered out; finished in 452.37s

Some tests failed in compiletest suite=ui mode=ui host=powerpc-unknown-linux-gnu target=powerpc-unknown-linux-gnu
Build completed unsuccessfully in 0:31:52
(sid_powerpc-dchroot)glaubitz@perotto:~/rust$

while on dabedb7, there is a large number of failures and lots of tests are being ignored:

    [ui] tests/ui/threads-sendsync/task-comm-7.rs
    [ui] tests/ui/type/type-check/issue-88577-check-fn-with-more-than-65535-arguments.rs
    [ui] tests/ui/threads-sendsync/task-comm-10.rs
    [ui] tests/ui/threads-sendsync/issue-8827.rs
    [ui] tests/ui/threads-sendsync/send-resource.rs
    [ui] tests/ui/threads-sendsync/tcp-stress.rs
    [ui] tests/ui/threads-sendsync/unwind-resource.rs
    [ui] tests/ui/traits/bound/in-arc.rs
    [ui] tests/ui/type_length_limit.rs
    [ui] tests/ui/threads-sendsync/mpsc_stress.rs
    [ui] tests/ui/traits/issue-91949-hangs-on-recursion.rs

test result: FAILED. 4 passed; 513 failed; 15389 ignored; 0 measured; 0 filtered out; finished in 13.27s

Some tests failed in compiletest suite=ui mode=ui host=powerpc-unknown-linux-gnu target=powerpc-unknown-linux-gnu
Build completed unsuccessfully in 0:00:19
(sid_powerpc-dchroot)glaubitz@perotto:~/rust$

CC @oksbsb

[nikic]

How do the actual failures look like?

[glaubitz]

I have uploaded the full build log here: https://people.debian.org/~glaubitz/rustc_powerpc_1.76.log.gz

There seem to be a lot of crashes with status: signal: 6 (SIGABRT).

[nikic]

There's also a free(): invalid pointer message before the abort.

[glaubitz]

Turns out that the issue are resolved on git master and the number of testsuite failures is even lower than with 1.75.0.

Therefore closing. Sorry for the noise.