| commit | 93e3696b5dac778cf638a67616a4a4d521d6fce9 | [log] [tgz] |
|---|---|---|
| author | Keith Randall <khr@golang.org> | Wed May 08 08:51:39 2024 -0700 |
| committer | Keith Randall <khr@golang.org> | Wed May 08 17:09:06 2024 +0000 |
| tree | adf08513087d5c2f8116873b4a9afa37c776b96c | |
| parent | ad27916c24860576a2aec4cff6a295c340aafe3c [diff] |
cmd/compile: avoid past-the-end pointer when zeroing When we optimize append(s, make([]T, n)...), we have to be careful not to pass &s[0] + len(s)*sizeof(T) as the argument to memclr, as that pointer might be past-the-end. This can only happen if n is zero, so just special-case n==0 in the generated code. Fixes #67255 Change-Id: Ic680711bb8c38440eba5e759363ef65f5945658b Reviewed-on: https://go-review.googlesource.com/c/go/+/584116 Reviewed-by: Austin Clements <austin@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Keith Randall <khr@google.com>
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