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go/test/fixedbugs/issue38359.go
Keith Randall 83e288f3db cmd/compile: prevent constant folding of +/- when result is NaN
Missed as part of CL 221790. It isn't just * and / that can make NaNs.

Update #36400
Fixes #38359

Change-Id: I3fa562f772fe03b510793a6dc0cf6189c0c3e652
Reviewed-on: https://go-review.googlesource.com/c/go/+/227860
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2020-04-10 19:32:41 +00:00

20 lines
318 B
Go

// compile
// 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.
// Make sure NaN-NaN compiles correctly.
package p
func f() {
var st struct {
f float64
_, _ string
}
f := 1e308
st.f = 2*f - 2*f
}