golang.org/x/sync

The semaphore.Weighted API accepts int64 for weights. If a negative
weight is passed, it mathematically corrupts the internal state tracker
(s.cur) and bypasses the package's existing safety checks.

This adds strict boundary validation to panic immediately if a negative
weight is provided.

Fixes golang/go#80183

Change-Id: I7e74bad404a8b99aef7e3d2189dda43f8ea644c2
GitHub-Last-Rev: ee6289c
GitHub-Pull-Request: #31
Reviewed-on: https://go-review.googlesource.com/c/sync/+/796080
Reviewed-by: Damien Neil dneil@google.com
Reviewed-by: Zain Yousef zain.19dj@gmail.com
Reviewed-by: Alan Donovan adonovan@google.com
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Change-Id: If88a7d731009bfb40774ea45a94187ce4d0db848
Reviewed-on: https://go-review.googlesource.com/c/sync/+/785081
Reviewed-by: Mark Freeman markfreeman@google.com
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Change-Id: I265cbc977e15a81c0068e7b60933843d8f02fe6a
Reviewed-on: https://go-review.googlesource.com/c/sync/+/747140
Reviewed-by: Alan Donovan adonovan@google.com
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This could produce a confusing panic message if the second len(g.sem)
call returns 0. Avoid that by reading it once.

Change-Id: Ibdb4963f90921bc20427b3f1e2de410638f6cb6b
Reviewed-on: https://go-review.googlesource.com/c/sync/+/726280
Reviewed-by: Alan Donovan adonovan@google.com
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Change-Id: I3dd6df0eb2cc592f8811935cbcbca54a0d9304ce
Reviewed-on: https://go-review.googlesource.com/c/sync/+/713400
Reviewed-by: Alan Donovan adonovan@google.com
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By now Go 1.25.0 has been released, and Go 1.23 is no longer supported
per the Go Release Policy (see https://go.dev/doc/devel/release#policy).

For golang/go#69095.

[git-generate]
(cd . && go get go@1.24.0 && go mod tidy && go fix ./... && go mod edit -toolchain=none)

Change-Id: Ifa2b9ecc1efe475dfe4d60f41fb3ad2c63896d12
Reviewed-on: https://go-review.googlesource.com/c/sync/+/695358
Reviewed-by: Dmitri Shuralyov dmitshur@google.com
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This change reverts CL 644575, which caused panics in the f()
call after group.Go(f) to be propagated to the subsequent
group.Wait call. This caused more problems than it solved.

Also:

• preserve some of the doc comment wording of Group.Go.
• leave a "tsunami stone" comment in Group.Go.

Fixes golang/go#53757
Updates golang/go#74275
Updates golang/go#74304
Updates golang/go#74306

Change-Id: I6e3992510944db7d69c72eaf241aedf8b84e62dd
Reviewed-on: https://go-review.googlesource.com/c/sync/+/682935
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Change-Id: I5cdcc5034ccd87b939a406693e97485553ab60fa
Reviewed-on: https://go-review.googlesource.com/c/sync/+/676715
Reviewed-by: Dmitri Shuralyov dmitshur@google.com
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Recovered panic values are wrapped and saved in Group.
Goexits are detected by a sentinel value set after the given function
returns normally. Wait propagates the first instance of a panic or
Goexit.

According to the runtime.Goexit after the code will not be executed,
with a bool, if f not call runtime.Goexit, is true,
determine whether to propagate runtime.Goexit.

Fixes golang/go#53757

Change-Id: Ic6426fc014fd1c4368ebaceef5b0d6163770a099
Reviewed-on: https://go-review.googlesource.com/c/sync/+/644575
Reviewed-by: Sean Liao sean@liao.dev
Auto-Submit: Alan Donovan adonovan@google.com
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