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477b049060
OTYPE and OMETHEXPR were missing from OpPrec. So add them with the
same precedences as OT{ARRAY,MAP,STRUCT,etc} and
ODOT{,METH,INTER,etc}, respectively. However, ODEREF (which is also
used for pointer types *T) has a lower precedence than other types, so
pointer types need to be specially handled to assign them their
correct, lower precedence.
Incidentally, this also improves the error messages in issue15055.go,
where we were adding unnecessary parentheses around the types in
conversion expressions.
Thanks to Cuong Manh Le for writing the test cases for #43428.
Fixes #43428.
Change-Id: I57e7979babe3ed9ef8a8b5a2a3745e3737dd785f
Reviewed-on: https://go-review.googlesource.com/c/go/+/280873
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
20 lines
1.1 KiB
Go
20 lines
1.1 KiB
Go
// errorcheck
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// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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func main() {
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type name string
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_ = []byte("abc", "def", 12) // ERROR "too many arguments to conversion to \[\]byte: \[\]byte\(.abc., .def., 12\)"
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_ = string("a", "b", nil) // ERROR "too many arguments to conversion to string: string\(.a., .b., nil\)"
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_ = []byte() // ERROR "missing argument to conversion to \[\]byte: \[\]byte\(\)"
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_ = string() // ERROR "missing argument to conversion to string: string\(\)"
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_ = *int() // ERROR "missing argument to conversion to int: int\(\)"
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_ = (*int)() // ERROR "missing argument to conversion to \*int: \(\*int\)\(\)"
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_ = name("a", 1, 3.3) // ERROR "too many arguments to conversion to name: name\(.a., 1, 3.3\)"
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_ = map[string]string(nil, nil) // ERROR "too many arguments to conversion to map\[string\]string: map\[string\]string\(nil, nil\)"
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}
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