dmd/compiler/test/fail_compilation/test23216.d
2022-07-09 18:53:07 +02:00

24 lines
730 B
D

/*
TEST_OUTPUT:
---
fail_compilation/test23216.d(23): Error: invalid `foreach_reverse` aggregate `r` of type `Range`
fail_compilation/test23216.d(23): `foreach_reverse` works with bidirectional ranges (implementing `back` and `popBack`), aggregates implementing `opApplyReverse`, or the result of an aggregate's `.tupleof` property
fail_compilation/test23216.d(23): https://dlang.org/phobos/std_range_primitives.html#isBidirectionalRange
---
*/
// https://issues.dlang.org/show_bug.cgi?id=23216
// Better Error Message For foreach_reverse Without Bidirectional Range
struct Range
{
bool empty = true;
int front = 0;
void popFront() { }
}
void main()
{
Range r;
foreach_reverse (word; r) { }
}