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-rw-r--r--backend/RTLgenproof.v1
1 files changed, 1 insertions, 0 deletions
diff --git a/backend/RTLgenproof.v b/backend/RTLgenproof.v
index a15095bd..92f4cc91 100644
--- a/backend/RTLgenproof.v
+++ b/backend/RTLgenproof.v
@@ -1320,6 +1320,7 @@ Proof.
monadInv TF.
econstructor; split.
left; apply plus_one. eapply exec_function_external; eauto.
+ eapply external_call_symbols_preserved; eauto. exact symbols_preserved.
constructor; auto.
(* return *)