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cmd/compile: "missing function body" detection stops working #48097

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cherrymui opened this issue Aug 31, 2021 · 2 comments
Closed

cmd/compile: "missing function body" detection stops working #48097

cherrymui opened this issue Aug 31, 2021 · 2 comments
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
Milestone
Go1.18

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@cherrymui
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What version of Go are you using (go version)?

tip (bdc1bef)

Does this issue reproduce with the latest release?

No.

What did you do?

Compiling the following code, with a bodyless function but not assembly file or linknames.

package p

func F()

What did you expect to see?

$ go1.17 build x.go
# command-line-arguments
./x.go:3:6: missing function body

What did you see instead?

$ go build x.go
$ go tool compile -complete x.go

No error for both commands. cmd/go does pass -complete to the compiler correctly, but the compiler doesn't detect the error.

cc @mdempsky @aclements @thanm
@cherrymui cherrymui added the NeedsFix The path to resolution is known, but the work has not been done. label Aug 31, 2021
@cherrymui cherrymui added this to the Go1.18 milestone Aug 31, 2021
@cuonglm
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cuonglm commented Sep 1, 2021

This seems -G=3 issue, or specifically, irgen since when it also does not handle //go:noescape:

package p

func F()

//go:noescape
func f() {}

@cuonglm cuonglm self-assigned this Sep 1, 2021
@gopherbot
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Change https://golang.org/cl/346470 mentions this issue: cmd/compile: fix irgen mis-handling invalid function declaration

@rsc rsc unassigned cuonglm Jun 23, 2022
@golang golang locked and limited conversation to collaborators Jun 23, 2023
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
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Go1.18
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@cuonglm @gopherbot @cherrymui