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path: root/compiler/rustc_symbol_mangling/src/test.rs
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-rw-r--r--compiler/rustc_symbol_mangling/src/test.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_symbol_mangling/src/test.rs b/compiler/rustc_symbol_mangling/src/test.rs
index 0c6d1495e39..50935e7caf3 100644
--- a/compiler/rustc_symbol_mangling/src/test.rs
+++ b/compiler/rustc_symbol_mangling/src/test.rs
@@ -58,7 +58,7 @@ impl SymbolNamesTest<'_> {
             let def_id = def_id.to_def_id();
             let instance = Instance::new_raw(
                 def_id,
-                tcx.erase_regions(GenericArgs::identity_for_item(tcx, def_id)),
+                tcx.erase_and_anonymize_regions(GenericArgs::identity_for_item(tcx, def_id)),
             );
             let mangled = tcx.symbol_name(instance);
             tcx.dcx().emit_err(TestOutput {