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The result of ODOTPTR, as well as a bunch of other ops, should be the type of the result, not always a pointer type. This fixes an amd64p32 bug where we were incorrectly truncating a 64-bit slice index to 32 bits, and then barfing on a weird load-64-bits-but-then-truncate-to-32-bits op that doesn't exist. Fixes #15252 Change-Id: Ie62f4315fffd79f233e5449324ccc0879f5ac343 Reviewed-on: https://go-review.googlesource.com/22094 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
33 lines
612 B
Go
33 lines
612 B
Go
// run
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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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// This test makes sure that we use all 64 bits of an
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// index, even on 32 bit machines. It also tests that nacl
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// can compile 64 bit indexes loaded from ODOTPTR properly.
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package main
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type T struct {
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i int64
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}
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func f(t *T) byte {
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b := [2]byte{3, 4}
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return b[t.i]
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}
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func main() {
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t := &T{0x100000001}
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defer func() {
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r := recover()
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if r == nil {
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panic("panic wasn't recoverable")
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}
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}()
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f(t)
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panic("index didn't panic")
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}
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