cmd/compile: `PGO error: error opening profile: EOF` in `cmd/go.TestScript/build_pgo` as of CL 529738

[bcmills]

Go version

b7ae16e

Output of go env in your module/workspace:

N/A

What did you do?

https://build.golang.org/log/393c8b9908c5d34fbcdd897c414150da1f4b0ff4

What did you see happen?

vcs-test.golang.org rerouted to http://127.0.0.1:39567
https://vcs-test.golang.org rerouted to https://127.0.0.1:39673
go test proxy running at GOPROXY=http://127.0.0.1:36517/mod
2024/01/22 22:19:27 http: TLS handshake error from 127.0.0.1:51242: read tcp 127.0.0.1:39673->127.0.0.1:51242: read: connection reset by peer
2024/01/22 22:19:27 http: TLS handshake error from 127.0.0.1:51224: read tcp 127.0.0.1:39673->127.0.0.1:51224: read: connection reset by peer
2024/01/22 22:19:32 http: TLS handshake error from 127.0.0.1:59720: EOF
--- FAIL: TestScript (0.06s)
    --- FAIL: TestScript/build_pgo (1.21s)
        script_test.go:132: 2024-01-22T22:16:20Z
        script_test.go:134: $WORK=/workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484
        script_test.go:156: 
            # Test go build -pgo flag.
            # Specifically, the build cache handles profile content correctly. (0.000s)
            # build without PGO (0.792s)
            # build with PGO, should trigger rebuild
            # starting with an empty profile (the compiler accepts it) (0.421s)
            > go build -x -pgo=prof -o triv.exe triv.go
            [stderr]
            WORK=/workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/tmp/go-build2992291716
            mkdir -p $WORK/b004/
            echo '# import config' > $WORK/b004/importcfg # internal
            cd /workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src
            /workdir/go/pkg/tool/linux_amd64/compile -o $WORK/b004/_pkg_.a -trimpath "$WORK/b004=>" -p internal/goarch -std -complete -buildid Fj2GgQ9Rwnf3T85en76X/Fj2GgQ9Rwnf3T85en76X -pgoprofile=/workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof -c=4 -nolocalimports -importcfg $WORK/b004/importcfg -pack /workdir/go/src/internal/goarch/goarch.go /workdir/go/src/internal/goarch/goarch_amd64.go /workdir/go/src/internal/goarch/zgoarch_amd64.go
            mkdir -p $WORK/b009/
            echo '# import config' > $WORK/b009/importcfg # internal
            /workdir/go/pkg/tool/linux_amd64/compile -o $WORK/b009/_pkg_.a -trimpath "$WORK/b009=>" -p internal/coverage/rtcov -std -complete -buildid 6ATrd2lMco6AF8BNAr8p/6ATrd2lMco6AF8BNAr8p -pgoprofile=/workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof -c=4 -nolocalimports -importcfg $WORK/b009/importcfg -pack /workdir/go/src/internal/coverage/rtcov/rtcov.go
            mkdir -p $WORK/b010/
            echo '# import config' > $WORK/b010/importcfg # internal
            /workdir/go/pkg/tool/linux_amd64/compile -o $WORK/b010/_pkg_.a -trimpath "$WORK/b010=>" -p internal/godebugs -std -complete -buildid iDszRIoF51DfbEGT4unI/iDszRIoF51DfbEGT4unI -pgoprofile=/workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof -c=4 -nolocalimports -importcfg $WORK/b010/importcfg -pack /workdir/go/src/internal/godebugs/table.go
            mkdir -p $WORK/b011/
            echo '# import config' > $WORK/b011/importcfg # internal
            /workdir/go/pkg/tool/linux_amd64/compile -o $WORK/b011/_pkg_.a -trimpath "$WORK/b011=>" -p internal/goexperiment -std -complete -buildid Awh8e1FAW6p8hNSsi0ty/Awh8e1FAW6p8hNSsi0ty -pgoprofile=/workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof -c=4 -nolocalimports -importcfg $WORK/b011/importcfg -pack /workdir/go/src/internal/goexperiment/exp_allocheaders_on.go /workdir/go/src/internal/goexperiment/exp_arenas_off.go /workdir/go/src/internal/goexperiment/exp_boringcrypto_off.go /workdir/go/src/internal/goexperiment/exp_cacheprog_off.go /workdir/go/src/internal/goexperiment/exp_cgocheck2_off.go /workdir/go/src/internal/goexperiment/exp_coverageredesign_on.go /workdir/go/src/internal/goexperiment/exp_exectracer2_on.go /workdir/go/src/internal/goexperiment/exp_fieldtrack_off.go /workdir/go/src/internal/goexperiment/exp_heapminimum512kib_off.go /workdir/go/src/internal/goexperiment/exp_loopvar_off.go /workdir/go/src/internal/goexperiment/exp_newinliner_off.go /workdir/go/src/internal/goexperiment/exp_pagetrace_off.go /workdir/go/src/internal/goexperiment/exp_preemptibleloops_off.go /workdir/go/src/internal/goexperiment/exp_rangefunc_off.go /workdir/go/src/internal/goexperiment/exp_regabiargs_on.go /workdir/go/src/internal/goexperiment/exp_regabiwrappers_on.go /workdir/go/src/internal/goexperiment/exp_staticlockranking_off.go /workdir/go/src/internal/goexperiment/flags.go
            mkdir -p $WORK/b012/
            echo '# import config' > $WORK/b012/importcfg # internal
            /workdir/go/pkg/tool/linux_amd64/compile -o $WORK/b012/_pkg_.a -trimpath "$WORK/b012=>" -p internal/goos -std -complete -buildid ETHKwWU-tsTT6cI6ow7g/ETHKwWU-tsTT6cI6ow7g -pgoprofile=/workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof -c=4 -nolocalimports -importcfg $WORK/b012/importcfg -pack /workdir/go/src/internal/goos/goos.go /workdir/go/src/internal/goos/unix.go /workdir/go/src/internal/goos/zgoos_linux.go
            # internal/coverage/rtcov
            compile: /workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof: PGO error: error opening profile: EOF
            # internal/goarch
            compile: /workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof: PGO error: error opening profile: EOF
            mkdir -p $WORK/b013/
            echo -n > $WORK/b013/go_asm.h # internal
            cd /workdir/go/src/runtime/internal/atomic
            /workdir/go/pkg/tool/linux_amd64/asm -p runtime/internal/atomic -trimpath "$WORK/b013=>" -I $WORK/b013/ -I /workdir/go/pkg/include -D GOOS_linux -D GOARCH_amd64 -D GOAMD64_v1 -gensymabis -o $WORK/b013/symabis ./atomic_amd64.s
            mkdir -p $WORK/b016/
            echo -n > $WORK/b016/go_asm.h # internal
            cd /workdir/go/src/runtime/internal/syscall
            /workdir/go/pkg/tool/linux_amd64/asm -p runtime/internal/syscall -trimpath "$WORK/b016=>" -I $WORK/b016/ -I /workdir/go/pkg/include -D GOOS_linux -D GOARCH_amd64 -D GOAMD64_v1 -gensymabis -o $WORK/b016/symabis ./asm_linux_amd64.s
            # internal/godebugs
            compile: /workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof: PGO error: error opening profile: EOF
            # internal/goos
            compile: /workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof: PGO error: error opening profile: EOF
            # internal/goexperiment
            compile: /workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof: PGO error: error opening profile: EOF
            mkdir -p $WORK/b007/
            echo -n > $WORK/b007/go_asm.h # internal
            cd /workdir/go/src/internal/cpu
            /workdir/go/pkg/tool/linux_amd64/asm -p internal/cpu -trimpath "$WORK/b007=>" -I $WORK/b007/ -I /workdir/go/pkg/include -D GOOS_linux -D GOARCH_amd64 -D GOAMD64_v1 -gensymabis -o $WORK/b007/symabis ./cpu.s ./cpu_x86.s
            echo '# import config' > $WORK/b013/importcfg # internal
            cd /workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src
            /workdir/go/pkg/tool/linux_amd64/compile -o $WORK/b013/_pkg_.a -trimpath "$WORK/b013=>" -p runtime/internal/atomic -std -buildid RxvR4loG3oFazg5D0fwg/RxvR4loG3oFazg5D0fwg -pgoprofile=/workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof -symabis $WORK/b013/symabis -c=4 -nolocalimports -importcfg $WORK/b013/importcfg -pack -asmhdr $WORK/b013/go_asm.h /workdir/go/src/runtime/internal/atomic/atomic_amd64.go /workdir/go/src/runtime/internal/atomic/doc.go /workdir/go/src/runtime/internal/atomic/stubs.go /workdir/go/src/runtime/internal/atomic/types.go /workdir/go/src/runtime/internal/atomic/types_64bit.go /workdir/go/src/runtime/internal/atomic/unaligned.go
            echo '# import config' > $WORK/b016/importcfg # internal
            /workdir/go/pkg/tool/linux_amd64/compile -o $WORK/b016/_pkg_.a -trimpath "$WORK/b016=>" -p runtime/internal/syscall -std -buildid WN_v3A1vKT8WDs-U_j3H/WN_v3A1vKT8WDs-U_j3H -pgoprofile=/workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof -symabis $WORK/b016/symabis -c=4 -nolocalimports -importcfg $WORK/b016/importcfg -pack -asmhdr $WORK/b016/go_asm.h /workdir/go/src/runtime/internal/syscall/defs_linux_amd64.go /workdir/go/src/runtime/internal/syscall/syscall_linux.go
            echo '# import config' > $WORK/b007/importcfg # internal
            /workdir/go/pkg/tool/linux_amd64/compile -o $WORK/b007/_pkg_.a -trimpath "$WORK/b007=>" -p internal/cpu -std -buildid Mh_sOF8Lr8lUUDv6xypP/Mh_sOF8Lr8lUUDv6xypP -pgoprofile=/workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof -symabis $WORK/b007/symabis -c=4 -nolocalimports -importcfg $WORK/b007/importcfg -pack -asmhdr $WORK/b007/go_asm.h /workdir/go/src/internal/cpu/cpu.go /workdir/go/src/internal/cpu/cpu_x86.go
            # runtime/internal/atomic
            compile: /workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof: PGO error: error opening profile: EOF
            # runtime/internal/syscall
            compile: /workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof: PGO error: error opening profile: EOF
            # internal/cpu
            compile: /workdir/tmp/cmd-go-test-2549283672/tmpdir3448827710/build_pgo3677076484/gopath/src/prof: PGO error: error opening profile: EOF
        script_test.go:156: FAIL: testdata/script/build_pgo.txt:11: go build -x -pgo=prof -o triv.exe triv.go: exit status 1
FAIL
FAIL	cmd/go	291.802s

What did you expect to see?

Passing tests.

The failures appear to have started as of https://go.dev/cl/529738.

[gopherbot]

Change https://go.dev/cl/557460 mentions this issue: Revert "cmd/preprofile: Add preprocess tool to pre-parse the profile file."

[jinlin-bayarea]

Hi Bryan. Sorry to cause this. Would you please show me how to reproduce this issue? I used ./all.bash and could not reproduce this issue.

[bcmills]

go test std cmd is the way to run all the tests. For just this one, you could use go test cmd/go -run=TestScript/build_pgo.