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| author | Bryan C. Mills <bcmills@google.com> | 2021-09-23 11:56:16 -0400 |
|---|---|---|
| committer | Bryan C. Mills <bcmills@google.com> | 2021-10-01 17:40:49 +0000 |
| commit | 243d65c8e551be424008a3dfcaf5c87dc1f35a77 (patch) | |
| tree | 1e4018c75253b2dc7f171f3f85d92db3e997cea4 /src/text/template/exec_test.go | |
| parent | 33576247e295b19311484d943d85495006d2fb39 (diff) | |
| download | go-243d65c8e551be424008a3dfcaf5c87dc1f35a77.tar.xz | |
bufio: reject UnreadByte or UnreadRune after a Discard or WriteTo
Discard is not really a read operation, and in theory it could
Seek the underlying Reader without actually reading anything,
so an UnreadByte following a Discard is disallowed.
Similarly, although WriteTo usually does end up calling Read on the
underlying buffer, if the underlying Reader implements io.WriterTo it
may instead terminate in a call to WriteTo, without ever buffering or
even seeing the last byte written. (It is conceptually read-like, but
not strictly “a read operation”.)
Fixes #48446
Change-Id: Ide6f2b157332b423486810399f66140c914144e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/351810
Trust: Bryan C. Mills <bcmills@google.com>
Trust: Joe Tsai <joetsai@digital-static.net>
Reviewed-by: Joe Tsai <joetsai@digital-static.net>
Diffstat (limited to 'src/text/template/exec_test.go')
0 files changed, 0 insertions, 0 deletions