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Work around a compiler crash folding labeled break. #9129

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Servo is hitting this problem, so this is a workaround for a lack of a real solution.
This commit is contained in:
Brian Anderson 2013-09-13 16:00:18 -07:00
parent cabba6b4d3
commit c62919f607
1 changed files with 10 additions and 2 deletions
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12
src/libsyntax/fold.rs
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@ -690,11 +690,19 @@ pub fn noop_fold_expr(e: &Expr_, fld: @ast_fold) -> Expr_ {
ExprBreak(ref opt_ident) => {
// FIXME #6993: add fold_name to fold.... then cut out the
// bogus Name->Ident->Name conversion.
ExprBreak(opt_ident.map_move(|x| fld.fold_ident(Ident::new(x)).name))
ExprBreak(opt_ident.map_move(|x| {
// FIXME #9129: Assigning the new ident to a temporary to work around codegen bug
let newx = Ident::new(x);
fld.fold_ident(newx).name
}))
}
ExprAgain(ref opt_ident) => {
// FIXME #6993: add fold_name to fold....
ExprAgain(opt_ident.map_move(|x| fld.fold_ident(Ident::new(x)).name))
ExprAgain(opt_ident.map_move(|x| {
// FIXME #9129: Assigning the new ident to a temporary to work around codegen bug
let newx = Ident::new(x);
fld.fold_ident(newx).name
}))
}
ExprRet(ref e) => {
ExprRet(e.map_move(|x| fld.fold_expr(x)))