zig/test/cases/bugs/656.zig
Andrew Kelley 3671582c15 syntax: functions require return type. remove ->
The purpose of this is:

 * Only one way to do things
 * Changing a function with void return type to return a possible
   error becomes a 1 character change, subtly encouraging
   people to use errors.

See #632

Here are some imperfect sed commands for performing this update:

remove arrow:

```
sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig")
```

add void:

```
sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig")
```

Some cleanup may be necessary, but this should do the bulk of the work.
2018-01-25 04:10:11 -05:00

31 lines
702 B
Zig

const assert = @import("std").debug.assert;
const PrefixOp = union(enum) {
Return,
AddrOf: Value,
};
const Value = struct {
align_expr: ?u32,
};
test "nullable if after an if in a switch prong of a switch with 2 prongs in an else" {
foo(false, true);
}
fn foo(a: bool, b: bool) void {
var prefix_op = PrefixOp { .AddrOf = Value { .align_expr = 1234 } };
if (a) {
} else {
switch (prefix_op) {
PrefixOp.AddrOf => |addr_of_info| {
if (b) { }
if (addr_of_info.align_expr) |align_expr| {
assert(align_expr == 1234);
}
},
PrefixOp.Return => {},
}
}
}