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-rw-r--r--compiler/rustc_builtin_macros/src/cfg.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_builtin_macros/src/cfg.rs b/compiler/rustc_builtin_macros/src/cfg.rs
index de198115fa0..cf1d5c68ead 100644
--- a/compiler/rustc_builtin_macros/src/cfg.rs
+++ b/compiler/rustc_builtin_macros/src/cfg.rs
@@ -43,7 +43,7 @@ fn parse_cfg<'a>(cx: &ExtCtxt<'a>, span: Span, tts: TokenStream) -> PResult<'a,
         return Err(cx.dcx().create_err(errors::RequiresCfgPattern { span }));
     }
 
-    let cfg = p.parse_meta_item(AllowLeadingUnsafe::Yes)?;
+    let cfg = p.parse_meta_item(AllowLeadingUnsafe::No)?;
 
     let _ = p.eat(&token::Comma);