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doc/go1.18: explain changes to compiler error messages

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For #47694.
For #50954.

Change-Id: I3789e145d64025fe2bf787fa5d01a21832903586
Reviewed-on: https://go-review.googlesource.com/c/go/+/381968
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Robert Griesemer 2022-02-01 09:07:49 -08:00
parent 125c5a3d69
commit a42bbf47d6
1 changed files with 8 additions and 0 deletions
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doc/go1.18.html
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@ -443,6 +443,14 @@ Do not send CLs removing the interior tags from such phrases.
new <code>go</code> command <code>-asan</code> option.
</p>
<p><!-- https://golang.org/issue/50954 -->
Because the compiler's type checker was replaced in its entirety to
support generics, some error messages now may use different wording
than before. In some cases, pre-Go 1.18 error messages provided more
detail or were phrased in a more helpful way.
We intend to address these cases in Go 1.19.
</p>
<p> <!-- https://github.com/golang/go/issues/49569 -->
Because of changes in the compiler related to supporting generics, the
Go 1.18 compile speed can be roughly 15% slower than the Go 1.17 compile speed.