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go/test/makemap.go
Matthew Dempsky 14056d0d00 cmd/compile/internal/types2: add unsafe.Add and unsafe.Slice
This is a port of CL 312212, CL 312591 (except check_test.go), and
CL 312790 to types2.

Updates #19367.
Updates #40481.

Change-Id: I58ba0b0dad157baba3f82c909d5eb1268b931be4
Reviewed-on: https://go-review.googlesource.com/c/go/+/312511
Trust: Matthew Dempsky <mdempsky@google.com>
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-23 00:41:01 +00:00

35 lines
1.3 KiB
Go

// errorcheck
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Ensure that typed non-integer, negative and too large
// values are not accepted as size argument in make for
// maps.
package main
type T map[int]int
var sink T
func main() {
sink = make(T, -1) // ERROR "negative size argument in make.*|must not be negative"
sink = make(T, uint64(1<<63)) // ERROR "size argument too large in make.*|overflows int"
// Test that errors are emitted at call sites, not const declarations
const x = -1
sink = make(T, x) // ERROR "negative size argument in make.*|must not be negative"
const y = uint64(1 << 63)
sink = make(T, y) // ERROR "size argument too large in make.*|overflows int"
sink = make(T, 0.5) // ERROR "constant 0.5 truncated to integer|truncated to int"
sink = make(T, 1.0)
sink = make(T, float32(1.0)) // ERROR "non-integer size argument in make.*|must be integer"
sink = make(T, float64(1.0)) // ERROR "non-integer size argument in make.*|must be integer"
sink = make(T, 1+0i)
sink = make(T, complex64(1+0i)) // ERROR "non-integer size argument in make.*|must be integer"
sink = make(T, complex128(1+0i)) // ERROR "non-integer size argument in make.*|must be integer"
}