diff options
Diffstat (limited to 'src/test/ui/borrowck/promote-ref-mut-in-let-issue-46557.rs')
-rw-r--r-- | src/test/ui/borrowck/promote-ref-mut-in-let-issue-46557.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/promote-ref-mut-in-let-issue-46557.rs b/src/test/ui/borrowck/promote-ref-mut-in-let-issue-46557.rs new file mode 100644 index 000000000..3576734de --- /dev/null +++ b/src/test/ui/borrowck/promote-ref-mut-in-let-issue-46557.rs @@ -0,0 +1,31 @@ +// Test that we fail to promote the constant here which has a `ref +// mut` borrow. + +fn gimme_static_mut_let() -> &'static mut u32 { + let ref mut x = 1234543; + x //~ ERROR +} + +fn gimme_static_mut_let_nested() -> &'static mut u32 { + let (ref mut x, ) = (1234543, ); + x //~ ERROR +} + +fn gimme_static_mut_match() -> &'static mut u32 { + match 1234543 { //~ ERROR + ref mut x => x + } +} + +fn gimme_static_mut_match_nested() -> &'static mut u32 { + match (123443,) { //~ ERROR + (ref mut x,) => x, + } +} + +fn gimme_static_mut_ampersand() -> &'static mut u32 { + &mut 1234543 //~ ERROR +} + +fn main() { +} |