| @@ -1413,6 +1413,14 @@ pub fn decode_syntax_context<D: Decoder, F: FnOnce(&mut D, u32) -> SyntaxContext |
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| 1413 |
1413 |
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| 1414 |
1414 |
// Overwrite the dummy data with our decoded SyntaxContextData |
| 1415 |
1415 |
HygieneData::with(|hygiene_data |
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1416 |
+if let Some(old) = hygiene_data.syntax_context_data.get(raw_id as usize) |
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1417 |
+ && old.outer_expn == ctxt_data.outer_expn |
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1418 |
+ && old.outer_transparency == ctxt_data.outer_transparency |
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1419 |
+ && old.parent == ctxt_data.parent |
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1420 |
+{ |
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1421 |
+ ctxt_data = old.clone(); |
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1422 |
+} |
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1423 |
+ |
| 1416 |
1424 |
let dummy = std::mem::replace( |
| 1417 |
1425 |
&mut hygiene_data.syntax_context_data[ctxt.as_u32() as usize], |
| 1418 |
1426 |
ctxt_data, |