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spec: add a link to Allocation section in section on append built-in 

If needed, the built-in function append allocates a new underlying
array. While we (probably) don't want to specify exactly how much
is allocated (the prose is deliberately vague), if there's more
space allocated than needed (cap > len after allocation), that
extra space is zeroed. Use an explicit link to the section on
Allocation which explicitly states that newly allocated memory
is zeroed.

Fixes #56684.

Change-Id: I9805d37c263b87860ea703ad143f738a0846247e
Reviewed-on: https://go-review.googlesource.com/c/go/+/452619
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Robert Griesemer 2022-11-21 16:36:14 -08:00 committed by Gopher Robot
parent 753ad5e1d5
commit 72fdecafc0
1 changed files with 1 additions and 1 deletions
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doc/go_spec.html
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@ -7256,7 +7256,7 @@ append(s S, x ...E) S // core type of S is []E
<p> <p>
If the capacity of <code>s</code> is not large enough to fit the additional If the capacity of <code>s</code> is not large enough to fit the additional
values, <code>append</code> allocates a new, sufficiently large underlying values, <code>append</code> <a href="#Allocation">allocates</a> a new, sufficiently large underlying
array that fits both the existing slice elements and the additional values. array that fits both the existing slice elements and the additional values.
Otherwise, <code>append</code> re-uses the underlying array. Otherwise, <code>append</code> re-uses the underlying array.
</p> </p>