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| author | Ian Lance Taylor <iant@golang.org> | 2023-05-25 11:31:28 -0700 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2023-05-26 17:03:12 +0000 |
| commit | 1ff89009f198ad5bae3549dd3b992882bd97e5f8 (patch) | |
| tree | 1e15949c17b230110545a0a976f1e14885ccdec5 /src/io | |
| parent | 13be9fa7f896b876775f964e167cdd44166438eb (diff) | |
| download | go-1ff89009f198ad5bae3549dd3b992882bd97e5f8.tar.gz go-1ff89009f198ad5bae3549dd3b992882bd97e5f8.zip | |
io: clarify that Read(nil) can return 0, EOF
Fixes #40385
Change-Id: I965b5db985fd4418a992e883073cbc8309b2cb88
Reviewed-on: https://go-review.googlesource.com/c/go/+/498355
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Diffstat (limited to 'src/io')
| -rw-r--r-- | src/io/io.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/io/io.go b/src/io/io.go index bcb9f774f6..01f36e0ce1 100644 --- a/src/io/io.go +++ b/src/io/io.go @@ -74,6 +74,9 @@ var ErrNoProgress = errors.New("multiple Read calls return no data or error") // that happen after reading some bytes and also both of the // allowed EOF behaviors. // +// If len(p) == 0, Read should always return n == 0. It may return a +// non-nil error if some error condition is known, such as EOF. +// // Implementations of Read are discouraged from returning a // zero byte count with a nil error, except when len(p) == 0. // Callers should treat a return of 0 and nil as indicating that |