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ca4089ad62
We're dropping this behavior in favor of runtime.KeepAlive. Implement runtime.KeepAlive as an intrinsic. Update #15843 Change-Id: Ib60225bd30d6770ece1c3c7d1339a06aa25b1cbc Reviewed-on: https://go-review.googlesource.com/28310 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com>
32 lines
874 B
Go
32 lines
874 B
Go
// errorcheck -0 -m -live
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// 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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// Test escape analysis and liveness inferred for uintptrescapes functions.
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package p
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import (
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"unsafe"
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)
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//go:uintptrescapes
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//go:noinline
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func F1(a uintptr) {} // ERROR "escaping uintptr"
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//go:uintptrescapes
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//go:noinline
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func F2(a ...uintptr) {} // ERROR "escaping ...uintptr" "a does not escape"
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func G() {
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var t int // ERROR "moved to heap"
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F1(uintptr(unsafe.Pointer(&t))) // ERROR "live at call to F1: autotmp" "&t escapes to heap"
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}
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func H() {
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var v int // ERROR "moved to heap"
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F2(0, 1, uintptr(unsafe.Pointer(&v)), 2) // ERROR "live at call to newobject: autotmp" "live at call to F2: autotmp" "escapes to heap"
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}
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