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// Copyright 2022 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.
// Test interpretation on 32 bit widths.
package main
func main() {
mapSize()
}
func mapSize() {
// Tests for the size argument of make on a map type.
const tooBigFor32 = 1<<33 - 1
wantPanic(
func() {
_ = make(map[int]int, int64(tooBigFor32))
},
"runtime error: ssa.MakeMap.Reserve value 8589934591 does not fit in int",
)
// TODO: Enable the following if sizeof(int) can be different for host and target.
// _ = make(map[int]int, tooBigFor32)
//
// Second arg to make in `make(map[int]int, tooBigFor32)` is an untyped int and
// is converted into an int explicitly in ssa.
// This has a different value on 32 and 64 bit systems.
}
func wantPanic(fn func(), s string) {
defer func() {
err := recover()
if err == nil {
panic("expected panic")
}
if got := err.(error).Error(); got != s {
panic("expected panic " + s + " got " + got)
}
}()
fn()
}
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