diff options
Diffstat (limited to 'tests/ui/consts/min_const_fn/promotion.rs')
-rw-r--r-- | tests/ui/consts/min_const_fn/promotion.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/consts/min_const_fn/promotion.rs b/tests/ui/consts/min_const_fn/promotion.rs new file mode 100644 index 000000000..fbe535c71 --- /dev/null +++ b/tests/ui/consts/min_const_fn/promotion.rs @@ -0,0 +1,17 @@ +use std::cell::Cell; + +const fn foo1() {} +const fn foo2(x: i32) -> i32 { x } +const fn foo3() -> i32 { 42 } +const fn foo4() -> Cell<i32> { Cell::new(42) } +const fn foo5() -> Option<Cell<i32>> { Some(Cell::new(42)) } +const fn foo6() -> Option<Cell<i32>> { None } + +fn main() { + let x: &'static () = &foo1(); //~ ERROR temporary value dropped while borrowed + let y: &'static i32 = &foo2(42); //~ ERROR temporary value dropped while borrowed + let z: &'static i32 = &foo3(); //~ ERROR temporary value dropped while borrowed + let a: &'static Cell<i32> = &foo4(); //~ ERROR temporary value dropped while borrowed + let a: &'static Option<Cell<i32>> = &foo5(); //~ ERROR temporary value dropped while borrowed + let a: &'static Option<Cell<i32>> = &foo6(); //~ ERROR temporary value dropped while borrowed +} |