cmd/internal/testdir: Test/fixedbugs/notinheap2.go failures

[gopherbot]

#!watchflakes
default <- pkg == "cmd/internal/testdir" && test == "Test/fixedbugs/notinheap2.go"

Issue created automatically to collect these failures.

Example (log):

=== RUN   Test/fixedbugs/notinheap2.go
=== PAUSE Test/fixedbugs/notinheap2.go
=== CONT  Test/fixedbugs/notinheap2.go
    testdir_test.go:1193: gc output:
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:27: nih is incomplete (or unallocatable); stack allocation disallowed
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:60: nih can't be allocated in Go; it is incomplete (or unallocatable)
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:61: struct { x nih } can't be allocated in Go; it is incomplete (or unallocatable)
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:62: [1]nih can't be allocated in Go; it is incomplete (or unallocatable)
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:63: nih can't be allocated in Go; it is incomplete (or unallocatable)
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:64: nih can't be allocated in Go; it is incomplete (or unallocatable)
...
        panic: inconsistent reference counts
        
        goroutine 17 gp=0x4000102700 m=2 mp=0x4000064808 [running]:
        panic({0x5d9440?, 0x7d54b0?})
        	runtime/panic.go:806 +0x154 fp=0x400005a6c0 sp=0x400005a610 pc=0x84e64
        os.(*Process).handleTransientAcquire(0x0?)
        	os/exec.go:184 +0x108 fp=0x400005a6e0 sp=0x400005a6c0 pc=0x10aaf8
        os.(*Process).pidfdSendSignal(0x40000fab40, 0x11)
        	os/pidfd_linux.go:122 +0x30 fp=0x400005a750 sp=0x400005a6e0 pc=0x110a80
        os.(*Process).signal(0x0?, {0x7dbbd8?, 0x7ec228?})
...
        runtime.selectgo(0x4000090fa0, 0x4000090f88, 0x0?, 0x0, 0x0?, 0x1)
        	runtime/select.go:351 +0x6c4 fp=0x4000090f40 sp=0x4000090e10 pc=0x63284
        runtime.ensureSigM.func1()
        	runtime/signal_unix.go:1085 +0x194 fp=0x4000090fd0 sp=0x4000090f40 pc=0x7fc74
        runtime.goexit({})
        	runtime/asm_arm64.s:1223 +0x4 fp=0x4000090fd0 sp=0x4000090fd0 pc=0x8ca74
        created by runtime.ensureSigM in goroutine 1
        	runtime/signal_unix.go:1068 +0xd8
        
--- FAIL: Test/fixedbugs/notinheap2.go (0.02s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/internal/testdir" && test == "Test/fixedbugs/notinheap2.go"

2025-02-05 11:44 gotip-linux-arm64-longtest go@664aebab cmd/internal/testdir.Test/fixedbugs/notinheap2.go (log)

=== RUN   Test/fixedbugs/notinheap2.go
=== PAUSE Test/fixedbugs/notinheap2.go
=== CONT  Test/fixedbugs/notinheap2.go
    testdir_test.go:1193: gc output:
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:27: nih is incomplete (or unallocatable); stack allocation disallowed
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:60: nih can't be allocated in Go; it is incomplete (or unallocatable)
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:61: struct { x nih } can't be allocated in Go; it is incomplete (or unallocatable)
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:62: [1]nih can't be allocated in Go; it is incomplete (or unallocatable)
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:63: nih can't be allocated in Go; it is incomplete (or unallocatable)
        /home/swarming/.swarming/w/ir/x/w/goroot/test/fixedbugs/notinheap2.go:64: nih can't be allocated in Go; it is incomplete (or unallocatable)
...
        panic: inconsistent reference counts
        
        goroutine 17 gp=0x4000102700 m=2 mp=0x4000064808 [running]:
        panic({0x5d9440?, 0x7d54b0?})
        	runtime/panic.go:806 +0x154 fp=0x400005a6c0 sp=0x400005a610 pc=0x84e64
        os.(*Process).handleTransientAcquire(0x0?)
        	os/exec.go:184 +0x108 fp=0x400005a6e0 sp=0x400005a6c0 pc=0x10aaf8
        os.(*Process).pidfdSendSignal(0x40000fab40, 0x11)
        	os/pidfd_linux.go:122 +0x30 fp=0x400005a750 sp=0x400005a6e0 pc=0x110a80
        os.(*Process).signal(0x0?, {0x7dbbd8?, 0x7ec228?})
...
        runtime.selectgo(0x4000090fa0, 0x4000090f88, 0x0?, 0x0, 0x0?, 0x1)
        	runtime/select.go:351 +0x6c4 fp=0x4000090f40 sp=0x4000090e10 pc=0x63284
        runtime.ensureSigM.func1()
        	runtime/signal_unix.go:1085 +0x194 fp=0x4000090fd0 sp=0x4000090f40 pc=0x7fc74
        runtime.goexit({})
        	runtime/asm_arm64.s:1223 +0x4 fp=0x4000090fd0 sp=0x4000090fd0 pc=0x8ca74
        created by runtime.ensureSigM in goroutine 1
        	runtime/signal_unix.go:1068 +0xd8
        
--- FAIL: Test/fixedbugs/notinheap2.go (0.02s)

— watchflakes

[ianlancetaylor]

Same as #71564.