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Keith Randall 8edcdddb23 crypto/subtle: don't cast to *uintptr when word size is 0
Casting to a *uintptr is not ok if there isn't at least 8 bytes of
data backing that pointer (on 64-bit archs).
So although we end up making a slice of 0 length with that pointer,
the cast itself doesn't know that.
Instead, bail early if the result is going to be 0 length.

Fixes #59334

Change-Id: Id3c0e09d341d838835c0382cccfb0f71dc3dc7e6
Reviewed-on: https://go-review.googlesource.com/c/go/+/480575
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-03-31 23:25:07 +00:00
.github doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
api sync: implement OnceFunc, OnceValue, and OnceValues 2023-03-31 20:01:17 +00:00
doc sync: implement OnceFunc, OnceValue, and OnceValues 2023-03-31 20:01:17 +00:00
lib/time time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
misc Revert "runtime/cgo: store M for C-created thread in pthread key" 2023-03-31 19:26:35 +00:00
src crypto/subtle: don't cast to *uintptr when word size is 0 2023-03-31 23:25:07 +00:00
test crypto/subtle: don't cast to *uintptr when word size is 0 2023-03-31 23:25:07 +00:00
.gitattributes
.gitignore time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: introduce GOROOT/go.env and move proxy/sumdb config there 2023-01-17 23:10:39 +00:00
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README.md README: update from CC-BY-3.0 to CC-BY-4.0 2022-11-02 20:14:56 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00

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