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Mark branch patterns degenerate when they don't bind symbols body needs

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This commit is contained in:
Ayaz Hafiz 2022-07-22 17:26:45 -04:00
parent ed6ee71225
commit 4031770836
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11 changed files with 110 additions and 32 deletions
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7
crates/compiler/constrain/src/expr.rs
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@ -1822,14 +1822,15 @@ fn constrain_when_branch_help(
};
for (i, loc_pattern) in when_branch.patterns.iter().enumerate() {
let pattern_expected = pattern_expected(HumanIndex::zero_based(i), loc_pattern.region);
let pattern_expected =
pattern_expected(HumanIndex::zero_based(i), loc_pattern.pattern.region);
let mut partial_state = PatternState::default();
constrain_pattern(
constraints,
env,
&loc_pattern.value,
loc_pattern.region,
&loc_pattern.pattern.value,
loc_pattern.pattern.region,
pattern_expected,
&mut partial_state,
);