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Fix #19734 (ICE)

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Adolfo Ochagavía 2014-12-12 17:34:28 +01:00
parent d2e2bd1b44
commit b99fb55f0f
1 changed files with 10 additions and 9 deletions
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19
src/libsyntax/ext/expand.rs
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@ -1026,16 +1026,17 @@ fn expand_method(m: P<ast::Method>, fld: &mut MacroExpander) -> SmallVector<P<as
|meths, mark| meths.move_map(|m| mark_method(m, mark)), |meths, mark| meths.move_map(|m| mark_method(m, mark)),
fld); fld);
let new_methods = match maybe_new_methods { match maybe_new_methods {
Some(methods) => methods, Some(methods) => {
// expand again if necessary
let new_methods = methods.into_iter()
.flat_map(|m| fld.fold_method(m).into_iter())
.collect();
fld.cx.bt_pop();
new_methods
}
None => SmallVector::zero() None => SmallVector::zero()
}; }
// expand again if necessary
let new_methods = new_methods.into_iter()
.flat_map(|m| fld.fold_method(m).into_iter()).collect();
fld.cx.bt_pop();
new_methods
} }
}) })
} }