cmd/go: 'go install -buildmode=shared -linkshared' overwrites files in GOROOT/pkg #28553
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funny-falcon
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dmitshur
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NeedsInvestigation
dmitshur
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Kindly paging @bcmills @randall77 @ianlancetaylor. |
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The bug here is that we're trying to write to I'm not sure what the fix is, though. CC @jayconrod |
bcmills
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As a workaround, if you make |
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I think This bit concerns me though:
I was able to reproduce this in the
PC=0x45b201 m=0 sigcode=0 |
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Change https://golang.org/cl/208482 mentions this issue: |
Instead of installing shared libraries to GOROOT/pkg, clone the necessary files into a new GOROOT and run there. Given that we now have a build cache, ideally we should not need to install into GOROOT/pkg at all, but we can't fix that during the 1.14 code freeze. Updates #28387 Updates #28553 Updates #30316 Change-Id: I83084a8ca29a5dffcd586c7fccc3f172cac57cc6 Reviewed-on: https://go-review.googlesource.com/c/go/+/208482 Run-TryBot: Bryan C. Mills <[email protected]> TryBot-Result: Gobot Gobot <[email protected]> Reviewed-by: Jay Conrod <[email protected]>
How reasonable would it be to have Go write to |
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How about if it's trying to write the same value to the file as what's in the file ( |
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Obsoleted by #47788 |
What version of Go are you using (
go version)?Does this issue reproduce with the latest release?
Yes
What operating system and processor architecture are you using (
go env)?Ubuntu 18.04, go 1.11.1 installed with godep
go envOutputWhat did you do?
I'm trying to build simplest library in
sharedmode linked against shared std.$ sudo rm /usr/local/go/pkg/linux_amd64_dynlink/ -rf $ sudo rm ~/.cache/go-build/ -rf $ sudo go install -buildmode=shared std $ mkdir ~/go/src/mylibrary $ cat > ~/go/src/mylibrary/lib.go package mylibrary import "fmt" func HelloWorld() { fmt.Println("Hello World") } $ go install -buildmode=shared -linkshared mylibrary go install runtime/internal/atomic: open /usr/local/go/pkg/linux_amd64_dynlink/runtime/internal/atomic.a: permission denied go install internal/cpu: open /usr/local/go/pkg/linux_amd64_dynlink/internal/cpu.a: permission denied go install sync/atomic: open /usr/local/go/pkg/linux_amd64_dynlink/sync/atomic.a: permission denied go install vendor/golang_org/x/crypto/curve25519: open /usr/local/go/pkg/linux_amd64_dynlink/vendor/golang_org/x/crypto/curve25519.a: permission denied go install runtime/cgo: open /usr/local/go/pkg/linux_amd64_dynlink/runtime/cgo.a: permission denied $ sudo go install -buildmode=shared -linkshared sync $ go install -buildmode=shared -linkshared mylibraryWhat did you expect to see?
Compiled shared my library.
What did you see instead?
It never finishes compilation of mylibrary, and eats slowly whole memory of my computer.
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