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spec: be more precise about underlying types of predeclared types 

The underlying type of the predeclared type error is not itself,
but the interface it is defined as.

Fixes #7444.

LGTM=r, rsc
R=r, rsc, iant, ken
CC=golang-codereviews
https://golang.org/cl/71790044
This commit is contained in:
Robert Griesemer 2014-03-05 19:37:44 -08:00
parent 3a7fe36d66
commit 8d77d2c8f0
1 changed files with 3 additions and 2 deletions
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5
doc/go_spec.html
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@ -1,6 +1,6 @@
<!--{
"Title": "The Go Programming Language Specification",
"Subtitle": "Version of March 5, 2014",
"Subtitle": "Version of March 6, 2014",
"Path": "/ref/spec"
}-->
@ -674,7 +674,8 @@ types, the dynamic type is always the static type.
<p>
Each type <code>T</code> has an <i>underlying type</i>: If <code>T</code>
is a predeclared type or a type literal, the corresponding underlying
is one of the predeclared boolean, numeric, or string types, or a type literal,
the corresponding underlying
type is <code>T</code> itself. Otherwise, <code>T</code>'s underlying type
is the underlying type of the type to which <code>T</code> refers in its
<a href="#Type_declarations">type declaration</a>.