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yet more comment improvements

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This commit is contained in:
Erik Desjardins 2021-08-25 17:40:57 -04:00
parent 75fecd5d40
commit c07a2eb5b4
1 changed files with 7 additions and 2 deletions
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9
compiler/rustc_middle/src/mir/interpret/allocation.rs
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@ -766,7 +766,7 @@ impl InitMask {
// In both cases, the block index of `end` is 1.
// But we do want to search block 1 in (a), and we don't in (b).
//
// If we subtract 1 from both end positions to make them inclusive:
// We subtract 1 from both end positions to make them inclusive:
//
// (a) 00000000|00000000 (b) 00000000|
// ^~~~~~~~~~^ ^~~~~~~^
@ -937,7 +937,12 @@ impl InitMask {
pub fn range_as_init_chunks(&self, start: Size, end: Size) -> InitChunkIter<'_> {
assert!(end <= self.len);
let is_init = if start < end { self.get(start) } else { false };
let is_init = if start < end {
self.get(start)
} else {
// `start..end` is empty: there are no chunks, so use some arbitrary value
false
};
InitChunkIter { init_mask: self, is_init, start, end }
}