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Artur M. Wolff 05250429ae net/http: treat MaxBytesReader's negative limits as equivalent to zero limit
Current MaxBytesReader behaviour differs from its documentation. It's
not similar enough to io.LimitReader. It panics when limit (n) < -1 and
returns [-1, <nil>] when limit (n) = -1. To fix that, we treat all
negative limits as equivalent to 0.

It would be possible to make MaxBytesReader analogically identical in
behaviour to io.LimitReader, but that would require to stop
maxBytesReader's Read from reading past the limit. Read always reads one
more byte (if possible) for non-negative limits and returns a non-EOF
error. This behaviour will now apply to all limits.

Fixes #45101

Change-Id: I25d1877dbff1eb4b195c8741fe5e4a025d01ebc0
Reviewed-on: https://go-review.googlesource.com/c/go/+/303171
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Damien Neil <dneil@google.com>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-03-23 17:46:42 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api syscall: restore broken GetQueuedCompletionStatus signature but make it not crash 2021-02-24 23:35:00 +00:00
doc cmd/go: assume Go 1.16 instead of Go 1.11 for dependencies that lack explicit 'go' directives 2021-03-19 19:59:56 +00:00
lib/time lib/time, time/tzdata: update tzdata to 2021a 2021-01-25 16:08:46 +00:00
misc cmd/compile, cmd/link: dynamically export writable static tmps 2021-03-16 23:14:54 +00:00
src net/http: treat MaxBytesReader's negative limits as equivalent to zero limit 2021-03-23 17:46:42 +00:00
test test: enable fixedbugs/bug193.go for -G compiler option 2021-03-23 05:12:39 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
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AUTHORS A+C: add new e-mail addresses for Andy Pan 2021-03-12 02:56:04 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
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CONTRIBUTORS A+C: add new e-mail addresses for Andy Pan 2021-03-12 02:56:04 +00:00
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