cmd/cgo/internal/test:auto-static: Test9400 failures

[gopherbot]

#!watchflakes
default <- pkg == "cmd/cgo/internal/test:auto-static" && test == "Test9400"

Issue created automatically to collect these failures.

Example (log):

=== RUN   Test9400
panic: test timed out after 10m0s
	running tests:
		Test9400 (9m59s)

goroutine 21 gp=0x4000150c40 m=60 mp=0x40001a5008 [running]:
panic({0x61f500?, 0x40000a4160?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:802 +0x150 fp=0x4000067f00 sp=0x4000067e50 pc=0x476e90
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2679 +0x2b0 fp=0x4000067fd0 sp=0x4000067f00 pc=0x4f23f0
...
runtime.gopark(0x2e878eaf343a?, 0x47495c?, 0x68?, 0x77?, 0x54d5c0?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:460 +0xc0 fp=0x4000060f10 sp=0x4000060ef0 pc=0x4772d0
runtime.gcBgMarkWorker(0x400007e150)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1463 +0xe0 fp=0x4000060fb0 sp=0x4000060f10 pc=0x421770
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1373 +0x28 fp=0x4000060fd0 sp=0x4000060fb0 pc=0x421658
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1268 +0x4 fp=0x4000060fd0 sp=0x4000060fd0 pc=0x47ecd4
created by runtime.gcBgMarkStartWorkers in goroutine 114
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1373 +0x140

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/cgo/internal/test:auto-static" && test == "Test9400"

2025-06-18 18:34 gotip-linux-arm64-clang15 go@4c756729 cmd/cgo/internal/test:auto-static.Test9400 [SKIP] (log)

=== RUN   Test9400
panic: test timed out after 10m0s
	running tests:
		Test9400 (9m59s)

goroutine 21 gp=0x4000150c40 m=60 mp=0x40001a5008 [running]:
panic({0x61f500?, 0x40000a4160?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:802 +0x150 fp=0x4000067f00 sp=0x4000067e50 pc=0x476e90
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2679 +0x2b0 fp=0x4000067fd0 sp=0x4000067f00 pc=0x4f23f0
...
runtime.gopark(0x2e878eaf343a?, 0x47495c?, 0x68?, 0x77?, 0x54d5c0?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:460 +0xc0 fp=0x4000060f10 sp=0x4000060ef0 pc=0x4772d0
runtime.gcBgMarkWorker(0x400007e150)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1463 +0xe0 fp=0x4000060fb0 sp=0x4000060f10 pc=0x421770
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1373 +0x28 fp=0x4000060fd0 sp=0x4000060fb0 pc=0x421658
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1268 +0x4 fp=0x4000060fd0 sp=0x4000060fd0 pc=0x47ecd4
created by runtime.gcBgMarkStartWorkers in goroutine 114
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1373 +0x140

— watchflakes