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Diffstat (limited to '')
-rw-r--r-- | test/shift3.go | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/shift3.go b/test/shift3.go new file mode 100644 index 0000000..bed2fd6 --- /dev/null +++ b/test/shift3.go @@ -0,0 +1,41 @@ +// run + +// Copyright 2022 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 the compiler's noder uses the correct type +// for RHS shift operands that are untyped. Must compile; +// run for good measure. + +package main + +import ( + "fmt" + "math" +) + +func f(x, y int) { + if x != y { + panic(fmt.Sprintf("%d != %d", x, y)) + } +} + +func main() { + var x int = 1 + f(x<<1, 2) + f(x<<1., 2) + f(x<<(1+0i), 2) + f(x<<0i, 1) + + f(x<<(1<<x), 4) + f(x<<(1.<<x), 4) + f(x<<((1+0i)<<x), 4) + f(x<<(0i<<x), 1) + + // corner cases + const M = math.MaxUint + f(x<<(M+0), 0) // shift by untyped int representable as uint + f(x<<(M+0.), 0) // shift by untyped float representable as uint + f(x<<(M+0.+0i), 0) // shift by untyped complex representable as uint +} |