diff options
Diffstat (limited to 'test/cmp1.go')
| -rw-r--r-- | test/cmp1.go | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/test/cmp1.go b/test/cmp1.go index db0a486dd..698544c58 100644 --- a/test/cmp1.go +++ b/test/cmp1.go @@ -26,6 +26,8 @@ func istrue(b bool) { } } +type T *int + func main() { var a []int var b map[string]int @@ -55,6 +57,24 @@ func main() { isfalse(ib == id) istrue(ic == id) istrue(ie == ie) + + // these are okay because one side of the + // comparison need only be assignable to the other. + isfalse(a == ib) + isfalse(a == ic) + isfalse(a == id) + isfalse(b == ic) + isfalse(b == id) + istrue(c == id) + istrue(e == ie) + + isfalse(ia == b) + isfalse(ia == c) + isfalse(ia == d) + isfalse(ib == c) + isfalse(ib == d) + istrue(ic == d) + istrue(ie == e) // 6g used to let this go through as true. var g uint64 = 123 @@ -73,4 +93,38 @@ func main() { println("m[ic] = ", m[ic]) panic("bad m[ic]") } + + // non-interface comparisons + { + c := make(chan int) + c1 := (<-chan int)(c) + c2 := (chan<- int)(c) + istrue(c == c1) + istrue(c == c2) + istrue(c1 == c) + istrue(c2 == c) + + d := make(chan int) + isfalse(c == d) + isfalse(d == c) + isfalse(d == c1) + isfalse(d == c2) + isfalse(c1 == d) + isfalse(c2 == d) + } + + // named types vs not + { + var x = new(int) + var y T + var z T = x + + isfalse(x == y) + istrue(x == z) + isfalse(y == z) + + isfalse(y == x) + istrue(z == x) + isfalse(z == y) + } } |