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| author | Keith Randall <khr@golang.org> | 2020-04-10 09:43:22 -0700 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2020-04-10 19:32:41 +0000 |
| commit | 83e288f3dbfdc83e4a016c60d54f928f69608d9a (patch) | |
| tree | a52c313cb730d20837e523bce16d56eddf9f8c32 /test | |
| parent | 37470c06644ec916821ec82ed84abc2f0d0b876c (diff) | |
| download | go-git-83e288f3dbfdc83e4a016c60d54f928f69608d9a.tar.gz | |
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>
Diffstat (limited to 'test')
| -rw-r--r-- | test/fixedbugs/issue38359.go | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/fixedbugs/issue38359.go b/test/fixedbugs/issue38359.go new file mode 100644 index 0000000000..a7550c7b2c --- /dev/null +++ b/test/fixedbugs/issue38359.go @@ -0,0 +1,19 @@ +// 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 +} |