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master
test/fixedbugs/issue11945.go
75 строк
2 KB
Matthew Dempsky
[dev.typeparams] cmd/compile: force untyped constants from types2 to expected kind
26 янв 2021, 04:50
26 янв 2021, 04:50
c97af00
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// run // Copyright 2017 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. package main import "fmt" // issue 17446 const ( _ = real(0) // from bug report _ = imag(0) // from bug report // same as above, but exported for #43891 Real0 = real(0) Imag0 = imag(0) // if the arguments are untyped, the results must be untyped // (and compatible with types that can represent the values) _ int = real(1) _ int = real('a') _ int = real(2.0) _ int = real(3i) _ float32 = real(1) _ float32 = real('a') _ float32 = real(2.1) _ float32 = real(3.2i) _ float64 = real(1) _ float64 = real('a') _ float64 = real(2.1) _ float64 = real(3.2i) _ int = imag(1) _ int = imag('a') _ int = imag(2.1 + 3i) _ int = imag(3i) _ float32 = imag(1) _ float32 = imag('a') _ float32 = imag(2.1 + 3.1i) _ float32 = imag(3i) _ float64 = imag(1) _ float64 = imag('a') _ float64 = imag(2.1 + 3.1i) _ float64 = imag(3i) ) var tests = []struct { code string got, want interface{} }{ {"real(1)", real(1), 1.0}, {"real('a')", real('a'), float64('a')}, {"real(2.0)", real(2.0), 2.0}, {"real(3.2i)", real(3.2i), 0.0}, {"imag(1)", imag(1), 0.0}, {"imag('a')", imag('a'), 0.0}, {"imag(2.1 + 3.1i)", imag(2.1 + 3.1i), 3.1}, {"imag(3i)", imag(3i), 3.0}, } func main() { // verify compile-time evaluated constant expressions for _, test := range tests { if test.got != test.want { panic(fmt.Sprintf("%s: %v (%T) != %v (%T)", test.code, test.got, test.got, test.want, test.want)) } } }