mirror of
https://github.com/golang/go
synced 2024-11-15 01:40:25 -07:00
377c1536f5
These conversion instructions set the condition code and so should be marked as clobbering flags. Fixes #39651. Change-Id: I91cc9687ea70ef0551bb3139c1875071c349d43e Reviewed-on: https://go-review.googlesource.com/c/go/+/238628 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
27 lines
514 B
Go
27 lines
514 B
Go
// run
|
|
|
|
// Copyright 2020 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 that float -> integer conversion doesn't clobber
|
|
// flags.
|
|
|
|
package main
|
|
|
|
//go:noinline
|
|
func f(x, y float64, a, b *bool, r *int64) {
|
|
*a = x < y // set flags
|
|
*r = int64(x) // clobber flags
|
|
*b = x == y // use flags
|
|
}
|
|
|
|
func main() {
|
|
var a, b bool
|
|
var r int64
|
|
f(1, 1, &a, &b, &r)
|
|
if a || !b {
|
|
panic("comparison incorrect")
|
|
}
|
|
}
|