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-rw-r--r--src/librustc_lint/builtin.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustc_lint/builtin.rs b/src/librustc_lint/builtin.rs
index 06e7c2b6f36..e32c8fbee68 100644
--- a/src/librustc_lint/builtin.rs
+++ b/src/librustc_lint/builtin.rs
@@ -2209,7 +2209,7 @@ impl ClashingExternDeclarations {
                 }
                 (Slice(a_ty), Slice(b_ty)) => Self::structurally_same_type(cx, a_ty, b_ty, ckind),
                 (RawPtr(a_tymut), RawPtr(b_tymut)) => {
-                    a_tymut.mutbl == a_tymut.mutbl
+                    a_tymut.mutbl == b_tymut.mutbl
                         && Self::structurally_same_type(cx, &a_tymut.ty, &b_tymut.ty, ckind)
                 }
                 (Ref(_a_region, a_ty, a_mut), Ref(_b_region, b_ty, b_mut)) => {