cmd/compile: TestScript/issue70173 failures

[gopherbot]

#!watchflakes
default <- pkg == "cmd/compile" && test == "TestScript/issue70173"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestScript/issue70173
=== PAUSE TestScript/issue70173
=== CONT  TestScript/issue70173
    run.go:223: 2025-01-16T23:23:33Z
    run.go:225: $WORK=/Users/swarming/.swarming/w/ir/x/t/TestScriptissue701733273506122/001
    run.go:232: 
        BOTO_CONFIG=/Users/swarming/.swarming/w/ir/x/a/gsutil-bbagent/.boto
        CIPD_ARCHITECTURE=amd64
        CIPD_CACHE_DIR=/Users/swarming/.swarming/w/ir/cache/cipd_cache
        CIPD_PROTOCOL=v2
...
        PWD=/Users/swarming/.swarming/w/ir/x/t/TestScriptissue701733273506122/001
        WORK=/Users/swarming/.swarming/w/ir/x/t/TestScriptissue701733273506122/001
        TMPDIR=/Users/swarming/.swarming/w/ir/x/t/TestScriptissue701733273506122/001/tmp
        
        > go run main.go
        [stderr]
        # runtime
        ThreadSanitizer: CHECK failed: tsan_sync.cpp:95 "((0)) != (0)" (0x0, 0x0) (tid=478668)
    run.go:232: FAIL: testdata/script/issue70173.txt:1: go run main.go: exit status 1
--- FAIL: TestScript/issue70173 (23.51s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/compile" && test == "TestScript/issue70173"

2025-01-16 20:14 gotip-darwin-amd64-race go@0b632d26 cmd/compile.TestScript/issue70173 (log)

=== RUN   TestScript/issue70173
=== PAUSE TestScript/issue70173
=== CONT  TestScript/issue70173
    run.go:223: 2025-01-16T23:23:33Z
    run.go:225: $WORK=/Users/swarming/.swarming/w/ir/x/t/TestScriptissue701733273506122/001
    run.go:232: 
        BOTO_CONFIG=/Users/swarming/.swarming/w/ir/x/a/gsutil-bbagent/.boto
        CIPD_ARCHITECTURE=amd64
        CIPD_CACHE_DIR=/Users/swarming/.swarming/w/ir/cache/cipd_cache
        CIPD_PROTOCOL=v2
...
        PWD=/Users/swarming/.swarming/w/ir/x/t/TestScriptissue701733273506122/001
        WORK=/Users/swarming/.swarming/w/ir/x/t/TestScriptissue701733273506122/001
        TMPDIR=/Users/swarming/.swarming/w/ir/x/t/TestScriptissue701733273506122/001/tmp
        
        > go run main.go
        [stderr]
        # runtime
        ThreadSanitizer: CHECK failed: tsan_sync.cpp:95 "((0)) != (0)" (0x0, 0x0) (tid=478668)
    run.go:232: FAIL: testdata/script/issue70173.txt:1: go run main.go: exit status 1
--- FAIL: TestScript/issue70173 (23.51s)

— watchflakes

[mknyszek]

Notes from triage:

With respect to #70173, Keith notes that this should be failing consistently if it was the same issue. Perhaps a Darwin machine bug is triggering this?

Michael P notes that the same machine has had an x/oscar failure that looked like a segfault in init.

This machine is possibly just bad.

[prattmic]

x/oscar SIGSEGV: https://luci-milo.appspot.com/ui/p/golang/builders/ci/x_oscar-gotip-darwin-amd64_14/b8724465273686590065/test-results?sortby=&groupby=