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cmd/link: accepts nonsense ldflags #25085

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heschi opened this issue Apr 25, 2018 · 4 comments
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cmd/link: accepts nonsense ldflags #25085

heschi opened this issue Apr 25, 2018 · 4 comments
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@heschi
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heschi commented Apr 25, 2018

I don't think this should succeed:

~/go/bin/go build -ldflags=a=b hello.go  && ./hello
hi

I haven't checked the code, but from strace it looks like go build is swallowing ldflags that don't start with a -.
@ianlancetaylor
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The syntax -ldflags=a=b means "pass b to all packages that match the pattern a". If there are no packages that match the pattern a, then the flag will never be passed.

@heschi
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heschi commented Apr 25, 2018

Oh. That makes sense, I just didn't even consider that that syntax would apply to ldflags. I'm not sure what good it is, but it's not a bug. Thanks.

@heschi heschi closed this as completed Apr 25, 2018
@gopherbot
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Change https://golang.org/cl/109355 mentions this issue: cmd/link: fix test flag

gopherbot pushed a commit that referenced this issue Apr 26, 2018
@randall77
cmd/link: fix test flag
b4ac029 
Doesn't cause an error, see #25085.
But we should fix it nonetheless.

Change-Id: I7b6799e0a95475202cacefc3a7f02487e61bfd31
Reviewed-on: https://go-review.googlesource.com/109355
Reviewed-by: Heschi Kreinick <heschi@google.com>
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Change https://golang.org/cl/142003 mentions this issue: strings, bytes: Add ToValidUTF8

@golang golang locked and limited conversation to collaborators Oct 14, 2019
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@ianlancetaylor @gopherbot @heschi