uber-go / uber-go/atomic

Duration Store support int32

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Go
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Description

panic using the uatomic.Duration Store on a 32-bit system

panic: unaligned 64-bit atomic operation

goroutine 132 [running]:
runtime/internal/atomic.panicUnaligned()
        /home/ubuntu/BMI-HI3521A/go/src/runtime/internal/atomic/unaligned.go:8 +0x24
runtime/internal/atomic.Store64(0x45720ac, 0x3b9aca00)
        /home/ubuntu/BMI-HI3521A/go/src/runtime/internal/atomic/atomic_arm.s:301 +0x14
go.uber.org/atomic.(*Int64).Store(...)
        /StreamPlugins/gopath/pkg/mod/go.uber.org/atomic@v1.9.0/int64.go:75
go.uber.org/atomic.(*Duration).Store(...)
        /StreamPlugins/gopath/pkg/mod/go.uber.org/atomic@v1.9.0/duration.go:55

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the panic on a 32-bit system, then inspect the uatomic.Duration Store path and the go.uber.org/atomic Int64.Store implementation shown in the stack trace. Done means Duration.Store works without an unaligned 64-bit atomic panic on 32-bit systems, with relevant tests passing.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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