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-rw-r--r--src/libsyntax_ext/deriving/generic/mod.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libsyntax_ext/deriving/generic/mod.rs b/src/libsyntax_ext/deriving/generic/mod.rs
index 893d89f06a1..c53fa7dc706 100644
--- a/src/libsyntax_ext/deriving/generic/mod.rs
+++ b/src/libsyntax_ext/deriving/generic/mod.rs
@@ -1620,6 +1620,7 @@ impl<'a> TraitDef<'a> {
                             id: ast::DUMMY_NODE_ID,
                             span: pat.span.with_ctxt(self.span.ctxt()),
                             pat,
+                            is_placeholder: false
                         }
                     })
                     .collect();