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x/build/cmd/coordinator: compile error in os/os_test.go not detected by misc-compile TryBots #61923

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bcmills opened this issue Aug 10, 2023 · 6 comments
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x/build/cmd/coordinator: compile error in os/os_test.go not detected by misc-compile TryBots #61923

bcmills opened this issue Aug 10, 2023 · 6 comments
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Builders x/build issues (builders, bots, dashboards) NeedsFix The path to resolution is known, but the work has not been done.
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Unreleased

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@bcmills
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bcmills commented Aug 10, 2023

https://go.dev/cl/517755 caused a compilation error on the plan9 builders (https://build.golang.org/log/2613479c07e3aaf02e75f15f00b8d1c01c9ec217):

# os_test [os.test]
os/os_test.go:3297:70: too many arguments in call to syscall.Open
	have (string, number, number)
	want (string, int)
os/os_test.go:3302:55: too many arguments in call to syscall.Open
	have (string, number, number)
	want (string, int)
FAIL	os [build failed]

I didn't catch that during code review because the CL had a passing TryBot run, and based on #20119 I assumed that the misc-compile TryBots would have caught any compile error in the test.

It appears that either the fix for #20119 was incomplete, or something has regressed since then to cause the misc-compile TryBots to no longer catch compile errors in tests.

(CC @dmitshur @aclements @golang/release)
@bcmills bcmills added Builders x/build issues (builders, bots, dashboards) NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. labels Aug 10, 2023
@gopherbot gopherbot added this to the Unreleased milestone Aug 10, 2023
@bcmills
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bcmills commented Aug 10, 2023

I suspect this regressed in https://go.dev/cl/464955 (for #58163; attn @mknyszek).

@mknyszek
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Thanks for flagging this, on it.

@mknyszek
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OK yeah, got it. I suspect this should be an easy fix.

@gopherbot
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Change https://go.dev/cl/518255 mentions this issue: os: define TestIssue60181 only on Unix platforms

@dmitshur
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For the record, this is is being caught in LUCI as intended, see the misccompile column at https://ci.chromium.org/p/golang/g/go-gotip-ci/console. So this issue only affects x/build/cmd/coordinator.

image

@dmitshur dmitshur changed the title x/build: compile error in os/os_test.go not detected by misc-compile TryBots x/build/cmd/coordinator: compile error in os/os_test.go not detected by misc-compile TryBots Aug 10, 2023
@gopherbot
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Change https://go.dev/cl/518295 mentions this issue: cmd/coordinator: build test packages for misc-compile builders

gopherbot pushed a commit that referenced this issue Aug 10, 2023
@gopherbot
os: define TestIssue60181 only on Unix platforms
e34de96 
In CL 517755 the test was added in the unconstrained os_test.go
because it appeared to be portable, but it turned out not to be
valid on plan9.

(The build error was masked on the misc-compile TryBots by #61923.)

Although the test can also compile and run on Windows, the bug it
checks for is specific to Linux and only really needs to run there, so
I am moving it to os_unix_test.go instead of adding yet another test
file for “Unix and Windows but not Plan 9”.

Updates #60181.

Change-Id: I41fd11b288217e95652b5daa72460c0d26bde606
Reviewed-on: https://go-review.googlesource.com/c/go/+/518255
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
@dmitshur dmitshur added NeedsFix The path to resolution is known, but the work has not been done. and removed NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. labels Aug 10, 2023
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