mirror of git://gcc.gnu.org/git/gcc.git
31 lines
882 B
Go
31 lines
882 B
Go
// Copyright 2016 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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// +build ignore
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package runtime_test
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import (
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"runtime"
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"runtime/internal/sys"
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"testing"
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)
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// Test that the error value returned by mmap is positive, as that is
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// what the code in mem_bsd.go, mem_darwin.go, and mem_linux.go expects.
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// See the uses of ENOMEM in sysMap in those files.
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func TestMmapErrorSign(t *testing.T) {
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p := runtime.Mmap(nil, ^uintptr(0)&^(sys.PhysPageSize-1), 0, runtime.MAP_ANON|runtime.MAP_PRIVATE, -1, 0)
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// The runtime.mmap function is nosplit, but t.Errorf is not.
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// Reset the pointer so that we don't get an "invalid stack
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// pointer" error from t.Errorf if we call it.
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v := uintptr(p)
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p = nil
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if v != runtime.ENOMEM {
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t.Errorf("mmap = %v, want %v", v, runtime.ENOMEM)
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}
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}
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