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Diffstat (limited to 'src/test/ui/nll/issue-46589.rs')
-rw-r--r-- | src/test/ui/nll/issue-46589.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/nll/issue-46589.rs b/src/test/ui/nll/issue-46589.rs new file mode 100644 index 000000000..0a4c20d15 --- /dev/null +++ b/src/test/ui/nll/issue-46589.rs @@ -0,0 +1,31 @@ +// This tests passes in Polonius mode, so is skipped in the automated compare-mode. +// We will manually check it passes in Polonius tests, as we can't have a test here +// which conditionally passes depending on a test revision/compile-flags. + +// ignore-compare-mode-polonius + +struct Foo; + +impl Foo { + fn get_self(&mut self) -> Option<&mut Self> { + Some(self) + } + + fn new_self(&mut self) -> &mut Self { + self + } + + fn trigger_bug(&mut self) { + let other = &mut (&mut *self); + + *other = match (*other).get_self() { + Some(s) => s, + None => (*other).new_self() + //~^ ERROR cannot borrow `**other` as mutable more than once at a time [E0499] + }; + + let c = other; + } +} + +fn main() {} |