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It is unclear whether the current definition of os.IsTimeout is
desirable or not. Drop ErrTimeout for now so we can consider adding it
(or some other error) in a future release with a corrected definition.
Fixes #33411
Change-Id: I8b880da7d22afc343a08339eb5f0efd1075ecafe
Reviewed-on: https://go-review.googlesource.com/c/go/+/188758
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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As discussed in
https://github.com/golang/go/issues/32463#issuecomment-506833421
the classification of deadline-based timeouts as "temporary" errors is a
historical accident. I/O timeouts used to be duration-based, so they
really were temporary--retrying a timed-out operation could succeed. Now
that they're deadline-based, timeouts aren't temporary unless you reset
the deadline.
Drop ErrTemporary from Go 1.13, since its definition is wrong. We'll
consider putting it back in Go 1.14 with a clear definition and
deprecate net.OpError.Temporary.
Fixes #32463
Change-Id: I70cda664590d8872541e17409a5780da76920891
Reviewed-on: https://go-review.googlesource.com/c/go/+/188398
Reviewed-by: Jonathan Amsterdam <jba@google.com>
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When fmt.Errorf is provided with a %w verb with an error operand,
return an error implementing an Unwrap method returning that operand.
It is invalid to use %w with other formatting functions, to use %w
multiple times in a format string, or to use %w with a non-error
operand. When the Errorf format string contains an invalid use of %w,
the returned error does not implement Unwrap.
Change-Id: I534e20d3b163ab22c2b137b1c9095906dc243221
Reviewed-on: https://go-review.googlesource.com/c/go/+/176998
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
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Reverts the following changes:
https://go.googlesource.com/go/+/1f90d081391d4f5911960fd28d81d7ea5e554a8f
https://go.googlesource.com/go/+/8bf18b56a47a98b9dd2fa03beb358312237a8c76
https://go.googlesource.com/go/+/5402854c3557f87fa2741a52ffc15dfb1ef333cc
https://go.googlesource.com/go/+/37f84817247d3b8e687a701ccb0d6bc7ffe3cb78
https://go.googlesource.com/go/+/6be6f114e0d483a233101a67c9644cd72bd3ae7a
Partially reverts the followinng change, removing the errors.Opaque
function and the errors.Wrapper type definition:
https://go.googlesource.com/go/+/62f5e8156ef56fa61e6af56f4ccc633bde1a9120
Updates documentation referencing the Wrapper type.
Change-Id: Ia622883e39cafb06809853e3fd90b21441124534
Reviewed-on: https://go-review.googlesource.com/c/go/+/176997
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
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Add Unwrap methods to types which wrap an underlying error:
"encodinc/csv".ParseError
"encoding/json".MarshalerError
"net/http".transportReadFromServerError
"net".OpError
"net".DNSConfigError
"net/url".Error
"os/exec".Error
"signal/internal/pty".PtyError
"text/template".ExecError
Add os.ErrTemporary. A case could be made for putting this error
value in package net, since no exported error types in package os
include a Temporary method. However, syscall errors returned from
the os package do include this method.
Add Is methods to error types with a Timeout or Temporary method,
making errors.Is(err, os.Err{Timeout,Temporary}) equivalent to
testing the corresponding method:
"context".DeadlineExceeded
"internal/poll".TimeoutError
"net".adrinfoErrno
"net".OpError
"net".DNSError
"net/http".httpError
"net/http".tlsHandshakeTimeoutError
"net/pipe".timeoutError
"net/url".Error
Updates #30322
Updates #29934
Change-Id: I409fb20c072ea39116ebfb8c7534d493483870dc
Reviewed-on: https://go-review.googlesource.com/c/go/+/170037
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
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