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-rw-r--r--test/fixedbugs/issue39651.go26
1 files changed, 26 insertions, 0 deletions
diff --git a/test/fixedbugs/issue39651.go b/test/fixedbugs/issue39651.go
new file mode 100644
index 0000000..256a34d
--- /dev/null
+++ b/test/fixedbugs/issue39651.go
@@ -0,0 +1,26 @@
+// 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")
+ }
+}