rusfmt hangs when using cfg-if macro #4442
Description
rusfmt hangs when using cfg-if macro
To reproduce run rustftm main.rs, where:
// main.rs cfg_if::cfg_if! { if #[cfg(not(feature = "client"))] { if #[cfg(feature = "server")] { } } }rustfmt -V rustfmt 1.4.18-stable (8157a3f 2020-07-15)From the logs RUST_LOG=trace rustftm main.rs I can see it just keeps logging:
[2020-09-29T14:17:39Z DEBUG rustc_ap_rustc_parse::parser::attr] parse_outer_attributes: self.token=Token { kind: Ident("if", false), span: Span { lo: BytePos(67), hi: BytePos(69), ctxt: #0 } } [2020-09-29T14:17:39Z DEBUG rustc_ap_rustc_parse::parser::attr] parse_outer_attributes: self.token=Token { kind: Ident("if", false), span: Span { lo: BytePos(67), hi: BytePos(69), ctxt: #0 } } [2020-09-29T14:17:39Z DEBUG rustc_ap_rustc_parse::parser::attr] parse_outer_attributes: self.token=Token { kind: Ident("if", false), span: Span { lo: BytePos(67), hi: BytePos(69), ctxt: #0 } }