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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/nll/return_from_loop.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/ui/nll/return_from_loop.rs b/src/test/ui/nll/return_from_loop.rs new file mode 100644 index 000000000..495410894 --- /dev/null +++ b/src/test/ui/nll/return_from_loop.rs @@ -0,0 +1,35 @@ +// Basic test for liveness constraints: the region (`R1`) that appears +// in the type of `p` includes the points after `&v[0]` up to (but not +// including) the call to `use_x`. The `else` branch is not included. + +#![allow(warnings)] +#![feature(rustc_attrs)] + +struct MyStruct { + field: String +} + +fn main() { +} + +fn nll_fail() { + let mut my_struct = MyStruct { field: format!("Hello") }; + + let value = &mut my_struct.field; + loop { + my_struct.field.push_str("Hello, world!"); + //~^ ERROR [E0499] + value.len(); + return; + } +} + +fn nll_ok() { + let mut my_struct = MyStruct { field: format!("Hello") }; + + let value = &mut my_struct.field; + loop { + my_struct.field.push_str("Hello, world!"); + return; + } +} |