cmd/cgo/internal/testplugin: TestIssue18676 failures

[gopherbot]

#!watchflakes
default <- pkg == "cmd/cgo/internal/testplugin" && test == "TestIssue18676"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestIssue18676
( GOPATH=$TMPDIR PWD=$TMPDIR/src/testplugin LD_LIBRARY_PATH=$TMPDIR/src/testplugin /Users/swarming/.swarming/w/ir/x/w/goroot/bin/go build -gcflags '' -buildmode=plugin -o plugin.so ./issue18676/plugin.go )
    plugin_test.go:239: /Users/swarming/.swarming/w/ir/x/w/goroot/bin/go build -gcflags  -buildmode=plugin -o plugin.so ./issue18676/plugin.go: exit status 1
        command-line-arguments: /Users/swarming/.swarming/w/ir/x/w/goroot/pkg/tool/darwin_amd64/cgo: exit status 2
--- FAIL: TestIssue18676 (3.67s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/cgo/internal/testplugin" && test == "TestIssue18676"

2024-04-26 16:29 go1.22-darwin-amd64_13 release-branch.go1.22@a7ff78d5 cmd/cgo/internal/testplugin.TestIssue18676 (log)

=== RUN   TestIssue18676
( GOPATH=$TMPDIR PWD=$TMPDIR/src/testplugin LD_LIBRARY_PATH=$TMPDIR/src/testplugin /Users/swarming/.swarming/w/ir/x/w/goroot/bin/go build -gcflags '' -buildmode=plugin -o plugin.so ./issue18676/plugin.go )
    plugin_test.go:239: /Users/swarming/.swarming/w/ir/x/w/goroot/bin/go build -gcflags  -buildmode=plugin -o plugin.so ./issue18676/plugin.go: exit status 1
        command-line-arguments: /Users/swarming/.swarming/w/ir/x/w/goroot/pkg/tool/darwin_amd64/cgo: exit status 2
--- FAIL: TestIssue18676 (3.67s)

— watchflakes