1// errorcheck
2
3// Copyright 2017 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7// Ensure that typed non-integer, negative and too large
8// values are not accepted as size argument in make for
9// maps.
10
11package main
12
13type T map[int]int
14
15var sink T
16
17func main() {
18	sink = make(T, -1)            // ERROR "negative size argument in make.*|must not be negative"
19	sink = make(T, uint64(1<<63)) // ERROR "size argument too large in make.*|overflows int"
20
21	// Test that errors are emitted at call sites, not const declarations
22	const x = -1
23	sink = make(T, x) // ERROR "negative size argument in make.*|must not be negative"
24	const y = uint64(1 << 63)
25	sink = make(T, y) // ERROR "size argument too large in make.*|overflows int"
26
27	sink = make(T, 0.5) // ERROR "constant 0.5 truncated to integer|truncated to int"
28	sink = make(T, 1.0)
29	sink = make(T, float32(1.0)) // ERROR "non-integer size argument in make.*|must be integer"
30	sink = make(T, float64(1.0)) // ERROR "non-integer size argument in make.*|must be integer"
31	sink = make(T, 1+0i)
32	sink = make(T, complex64(1+0i))  // ERROR "non-integer size argument in make.*|must be integer"
33	sink = make(T, complex128(1+0i)) // ERROR "non-integer size argument in make.*|must be integer"
34}
35