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Fix StableMIR WrappingRange::is_full computation #122426

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Merged
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Mar 14, 2024
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Fix StableMIR WrappingRange::is_full computation #122426

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2 changes: 1 addition & 1 deletion compiler/stable_mir/src/abi.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -383,7 +383,7 @@ impl WrappingRange {
return Err(error!("Expected size <= 128 bits, but found {} instead", size.bits()));
};
if self.start <= max_value && self.end <= max_value {
Ok(self.start == 0 && max_value == self.end)
Ok(self.start == (self.end.wrapping_add(1) & max_value))
} else {
Err(error!("Range `{self:?}` out of bounds for size `{}` bits.", size.bits()))
}
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