From ccd992355df7192993c666236047820244914598 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:19:13 +0200 Subject: Adding upstream version 1.21.8. Signed-off-by: Daniel Baumann --- test/fixedbugs/issue43480.go | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 test/fixedbugs/issue43480.go (limited to 'test/fixedbugs/issue43480.go') diff --git a/test/fixedbugs/issue43480.go b/test/fixedbugs/issue43480.go new file mode 100644 index 0000000..d98ad3a --- /dev/null +++ b/test/fixedbugs/issue43480.go @@ -0,0 +1,33 @@ +// 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. + +// Issue #43480: ICE on large uint64 constants in switch cases. + +package main + +func isPow10(x uint64) bool { + switch x { + case 1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9, + 1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19: + return true + } + return false +} + +func main() { + var x uint64 = 1 + + for { + if !isPow10(x) || isPow10(x-1) || isPow10(x+1) { + panic(x) + } + next := x * 10 + if next/10 != x { + break // overflow + } + x = next + } +} -- cgit v1.2.3