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https://github.com/golang/go
synced 2024-11-23 07:30:05 -07:00
cb05a0aa6a
Now that CaptureVars is gone, we can remove the extra code in escape analysis that only served to appease toolstash -cmp. Change-Id: I8c811834f3d966e76702e2d362e3de414c94bea6 Reviewed-on: https://go-review.googlesource.com/c/go/+/281544 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Trust: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
86 lines
2.9 KiB
Go
86 lines
2.9 KiB
Go
// run
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// Copyright 2013 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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import (
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"strings"
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"unsafe"
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)
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type T []int
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func main() {
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n := -1
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shouldPanic("len out of range", func() { _ = make(T, n) })
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shouldPanic("cap out of range", func() { _ = make(T, 0, n) })
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shouldPanic("len out of range", func() { _ = make(T, int64(n)) })
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shouldPanic("cap out of range", func() { _ = make(T, 0, int64(n)) })
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testMakeInAppend(n)
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var t *byte
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if unsafe.Sizeof(t) == 8 {
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// Test mem > maxAlloc
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var n2 int64 = 1 << 59
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shouldPanic("len out of range", func() { _ = make(T, int(n2)) })
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shouldPanic("cap out of range", func() { _ = make(T, 0, int(n2)) })
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testMakeInAppend(int(n2))
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// Test elem.size*cap overflow
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n2 = 1<<63 - 1
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shouldPanic("len out of range", func() { _ = make(T, int(n2)) })
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shouldPanic("cap out of range", func() { _ = make(T, 0, int(n2)) })
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testMakeInAppend(int(n2))
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var x uint64 = 1<<64 - 1
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shouldPanic("len out of range", func() { _ = make([]byte, x) })
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shouldPanic("cap out of range", func() { _ = make(T, 0, x) })
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testMakeInAppend(int(x))
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} else {
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n = 1<<31 - 1
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shouldPanic("len out of range", func() { _ = make(T, n) })
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shouldPanic("cap out of range", func() { _ = make(T, 0, n) })
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shouldPanic("len out of range", func() { _ = make(T, int64(n)) })
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shouldPanic("cap out of range", func() { _ = make(T, 0, int64(n)) })
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testMakeInAppend(n)
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var x uint64 = 1<<32 - 1
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shouldPanic("len out of range", func() { _ = make([]byte, x) })
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shouldPanic("cap out of range", func() { _ = make(T, 0, x) })
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testMakeInAppend(int(x))
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}
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}
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func shouldPanic(str string, f func()) {
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defer func() {
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err := recover()
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if err == nil {
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panic("did not panic")
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}
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s := err.(error).Error()
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if !strings.Contains(s, str) {
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panic("got panic " + s + ", want " + str)
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}
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}()
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f()
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}
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// Test make in append panics since the gc compiler optimizes makes in appends.
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func testMakeInAppend(n int) {
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lengths := []int{0, 1}
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for _, length := range lengths {
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t := make(T, length)
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shouldPanic("len out of range", func() { _ = append(t, make(T, n)...) })
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shouldPanic("cap out of range", func() { _ = append(t, make(T, 0, n)...) })
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shouldPanic("len out of range", func() { _ = append(t, make(T, int64(n))...) })
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shouldPanic("cap out of range", func() { _ = append(t, make(T, 0, int64(n))...) })
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shouldPanic("len out of range", func() { _ = append(t, make(T, uint64(n))...) })
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shouldPanic("cap out of range", func() { _ = append(t, make(T, 0, uint64(n))...) })
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shouldPanic("len out of range", func() { _ = append(t, make(T, int(n))...) })
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shouldPanic("cap out of range", func() { _ = append(t, make(T, 0, int(n))...) })
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shouldPanic("len out of range", func() { _ = append(t, make(T, uint(n))...) })
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shouldPanic("cap out of range", func() { _ = append(t, make(T, 0, uint(n))...) })
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}
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}
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