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-rw-r--r--src/spec_analysis.ml1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/spec_analysis.ml b/src/spec_analysis.ml
index 5281ef27..d349037e 100644
--- a/src/spec_analysis.ml
+++ b/src/spec_analysis.ml
@@ -350,6 +350,7 @@ let rec fv_of_exp consider_var bound used set (E_aux (e,(_,tannot))) : (Nameset.
b,used,set
| E_exit e -> fv_of_exp consider_var bound used set e
| E_assert(c,m) -> list_fv bound used set [c;m]
+ | E_return e -> fv_of_exp consider_var bound used set e
| _ -> bound,used,set
and fv_of_pes consider_var bound used set pes =