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Diffstat (limited to 'compiler/rustc_const_eval/src/const_eval')
-rw-r--r--compiler/rustc_const_eval/src/const_eval/machine.rs3
1 files changed, 1 insertions, 2 deletions
diff --git a/compiler/rustc_const_eval/src/const_eval/machine.rs b/compiler/rustc_const_eval/src/const_eval/machine.rs
index 56325eaa1be..23683851799 100644
--- a/compiler/rustc_const_eval/src/const_eval/machine.rs
+++ b/compiler/rustc_const_eval/src/const_eval/machine.rs
@@ -249,10 +249,9 @@ impl<'tcx> CompileTimeInterpCx<'tcx> {
         } else if self.tcx.is_lang_item(def_id, LangItem::PanicFmt) {
             // For panic_fmt, call const_panic_fmt instead.
             let const_def_id = self.tcx.require_lang_item(LangItem::ConstPanicFmt, None);
-            // FIXME(@lcnr): why does this use an empty env if we've got a `param_env` right here.
             let new_instance = ty::Instance::expect_resolve(
                 *self.tcx,
-                ty::TypingEnv::fully_monomorphized(),
+                self.typing_env(),
                 const_def_id,
                 instance.args,
                 self.cur_span(),