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runtime/cgo: cannot build with -Wsign-compare [1.16 backport] #44346

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gopherbot opened this issue Feb 17, 2021 · 3 comments
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runtime/cgo: cannot build with -Wsign-compare [1.16 backport] #44346

gopherbot opened this issue Feb 17, 2021 · 3 comments
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CherryPickApproved Used during the release process for point releases FrozenDueToAge
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Go1.16.2

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gopherbot commented Feb 17, 2021 •
edited by dmitshur
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@ianlancetaylor requested issue #44340 (fixed in 07ef313 for Go 1.17) to be considered for backport to the next 1.16 minor release.

@gopherbot Please open backport to 1.16.

This problem makes it hard to build 1.16 programs that use cgo if you want to use -Wsign-compare in CGO_CFLAGS (to check your own C code). The CL fixes the problem.
@gopherbot gopherbot added the CherryPickCandidate Used during the release process for point releases label Feb 17, 2021
@gopherbot gopherbot mentioned this issue Feb 17, 2021
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Change https://golang.org/cl/293411 mentions this issue: [release-branch.go1.16] runtime/cgo: add cast in C code to avoid C compiler warning

gopherbot pushed a commit that referenced this issue Feb 18, 2021
@ianlancetaylor
[release-branch.go1.16] runtime/cgo: add cast in C code to avoid C co…
1a7e9af 
…mpiler warning

For #44340
Fixes #44346

Change-Id: Id80dd1f44a988b653933732afcc8e49a826affc4
Reviewed-on: https://go-review.googlesource.com/c/go/+/293209
Reviewed-by: Andrew G. Morgan <[email protected]>
Reviewed-by: Bryan C. Mills <[email protected]>
Trust: Ian Lance Taylor <[email protected]>
Run-TryBot: Ian Lance Taylor <[email protected]>
(cherry picked from commit 07ef313)
Reviewed-on: https://go-review.googlesource.com/c/go/+/293411
TryBot-Result: Go Bot <[email protected]>
@gopherbot gopherbot added this to the Go1.16.1 milestone Feb 19, 2021
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Closed by merging 1a7e9af to release-branch.go1.16.

@dmitshur dmitshur mentioned this issue Feb 19, 2021
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@toothrot toothrot added the CherryPickApproved Used during the release process for point releases label Feb 25, 2021
@gopherbot gopherbot removed the CherryPickCandidate Used during the release process for point releases label Feb 25, 2021
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Approved. This is a serious issue with no workaround.

We actually had approved it before this was submitted according to my notes, but I failed to comment on the issue.

@toothrot toothrot modified the milestones: Go1.16.1, Go1.16.2 Mar 10, 2021
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