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Diffstat (limited to 'src/test/ui/nll/match-cfg-fake-edges2.rs')
-rw-r--r-- | src/test/ui/nll/match-cfg-fake-edges2.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/nll/match-cfg-fake-edges2.rs b/src/test/ui/nll/match-cfg-fake-edges2.rs new file mode 100644 index 000000000..48f95e03b --- /dev/null +++ b/src/test/ui/nll/match-cfg-fake-edges2.rs @@ -0,0 +1,18 @@ +// Test that we have enough false edges to avoid exposing the exact matching +// algorithm in borrow checking. + +fn all_previous_tests_may_be_done(y: &mut (bool, bool)) { + let r = &mut y.1; + // We don't actually test y.1 to select the second arm, but we don't want + // borrowck results to be based on the order we match patterns. + match y { //~ ERROR cannot use `y.1` because it was mutably borrowed + (false, true) => 1, + (true, _) => { + r; + 2 + } + (false, _) => 3, + }; +} + +fn main() {} |