go: cmd/link: panic: runtime error: slice bounds out of range [::1751306] with length 1048576

What version of Go are you using (`go version`)?

$ go version
$ go version go1.15.2 darwin/amd64

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (`go env`)?

go env Output

$ go env
![image](https://user-images.githubusercontent.com/44709004/94216230-74f59580-ff11-11ea-8947-a36c8bfbf679.png)

What did you do?

$ go build -o xxx main.go

What did you expect to see?

build success

What did you see instead?

About this issue

Original URL
State: closed
Created 4 years ago
Reactions: 1
Comments: 15 (8 by maintainers)

Commits related to this issue

[release-branch.go1.15] cmd/internal/goobj2: fix buglet in object file reader The code in the Go object file reader was casting a pointer to mmaped memory into a large array prior to performing a rea... — committed to golang/go by thanm 4 years ago
cmd/internal/goobj: add test case for object file reader Add test in which a input Go object file contains a very large number of relocations (more than 1<<20). Updates #41621. Change-Id: If1ebf3c4... — committed to golang/go by thanm 4 years ago

Most upvoted comments

Would you be able to post instructions and/or source code so that we can reproduce this?

The panic is happening while the linker is reading relocations out of an object file – the offset it reads from the file is insane, which triggers the bounds range error. It would probably be a good idea to try to rule out the possibility of a corrupted object file (e.g. go clean -cache and rebuild).

thanm on Sep 25, 2020

Thanks @roger6106 . I will take a look.

thanm on Dec 15, 2020

@thanm: I just ran into this same issue. I have included reproducible code. Run go generate and then go build.

golang-41621.zip

$ go version
go version go1.15.6 darwin/amd64