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Daniel Martí 3fbfc83db2 cmd/vet: recognise func type conversions 
In hasSideEffects, vet has to be taught whether or not a CallExpr is an
actual function call, or just a type conversion.

The previous code knew how to differentiate fn(arg) from int(arg), but
it incorrectly saw (func(T))(fn) as a func call. This edge case is
slightly tricky, since the CallExpr.Fun has a func signature type, just
like in func calls.

However, the difference is that in this case the Fun is a type, not a
value. This information is in types.TypeAndValue, so use it.

Change-Id: I18bb8b23abbe7decc558b726ff2dc31fae2f13d6
Reviewed-on: https://go-review.googlesource.com/111416
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
 		2018-05-07 16:41:00 +00:00
.github github: update Pull Request template 2018-02-21 02:07:46 +00:00
api syscall: introduce Pointer type and use it instead of uintptr 2018-04-18 08:50:42 +00:00
doc doc: document Go 1.10.2 2018-04-30 18:01:00 +00:00
lib/time all: use HTTPS for iana.org links 2018-02-13 18:36:48 +00:00
misc misc/ios: improve detection of missing developer image 2018-05-04 05:47:22 +00:00
src cmd/vet: recognise func type conversions 2018-05-07 16:41:00 +00:00
test cmd/compile: optimize len([]rune(string)) 2018-05-06 05:31:01 +00:00
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CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS C: add Iskander Sharipov's individual CLA mail 2018-04-16 04:49:46 +00:00
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README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Download and Install

Binary Distributions

Official binary distributions are available at https://golang.org/dl/.

After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source or load doc/install-source.html in your web browser for source installation instructions.

Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.