mirror of
https://github.com/golang/go
synced 2024-10-02 14:38:33 -06:00
cc52b8b7f8
Various bug fixes: - don't allow := to redeclare non-variables - don't permit a comma-ok expression as a two-value function return Lots of dead code removed. Fixes golang/go#5500. R=adonovan CC=golang-dev https://golang.org/cl/10792044
67 lines
1.1 KiB
Go
67 lines
1.1 KiB
Go
// Tests of call chaining f(g()) when g has multiple return values (MRVs).
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// See https://code.google.com/p/go/issues/detail?id=4573.
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package main
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func assert(actual, expected int) {
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if actual != expected {
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panic(actual)
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}
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}
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func g() (int, int) {
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return 5, 7
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}
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func g2() (float64, float64) {
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return 5, 7
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}
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func f1v(x int, v ...int) {
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assert(x, 5)
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assert(v[0], 7)
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}
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func f2(x, y int) {
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assert(x, 5)
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assert(y, 7)
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}
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func f2v(x, y int, v ...int) {
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assert(x, 5)
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assert(y, 7)
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assert(len(v), 0)
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}
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func complexArgs() (float64, float64) {
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return 5, 7
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}
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func appendArgs() ([]string, string) {
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return []string{"foo"}, "bar"
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}
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func h() (i interface{}, ok bool) {
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m := map[int]string{1: "hi"}
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i, ok = m[1] // string->interface{} conversion within multi-valued expression
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return
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}
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func main() {
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f1v(g())
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f2(g())
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f2v(g())
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// TODO(gri): the typechecker still doesn't support these cases correctly.
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// if c := complex(complexArgs()); c != 5+7i {
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// panic(c)
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// }
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// if s := append(appendArgs()); len(s) != 2 || s[0] != "foo" || s[1] != "bar" {
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// panic(s)
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// }
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i, ok := h()
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if !ok || i.(string) != "hi" {
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panic(i)
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}
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}
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