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quote: Explicitly borrow the ExtCtxt

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Fixes #16992.
This commit is contained in:
Keegan McAllister 2014-09-05 19:50:05 -07:00
parent 6f34760e41
commit 2b3619412f
4 changed files with 36 additions and 10 deletions
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4
src/libsyntax/ext/quote.rs
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@ -766,7 +766,9 @@ fn expand_wrapper(cx: &ExtCtxt,
cx.view_use_glob(sp, ast::Inherited, ids_ext(path))
}).collect();
let stmt_let_ext_cx = cx.stmt_let(sp, false, id_ext("ext_cx"), cx_expr);
// Explicitly borrow to avoid moving from the invoker (#16992)
let cx_expr_borrow = cx.expr_addr_of(sp, cx.expr_deref(sp, cx_expr));
let stmt_let_ext_cx = cx.stmt_let(sp, false, id_ext("ext_cx"), cx_expr_borrow);
cx.expr_block(cx.block_all(sp, uses, vec!(stmt_let_ext_cx), Some(expr)))
}