bpo-40334: Support suppressing of multiple optional variables in Pegen (GH-20367)

diff --git a/Tools/peg_generator/pegen/c_generator.py b/Tools/peg_generator/pegen/c_generator.py
index 362698b0df62e2535f4d7756b42cb6c39592628d..1249d4f683e261d892c08d284bb1834fbe99933e 100644 (file)
--- a/Tools/peg_generator/pegen/c_generator.py
+++ b/Tools/peg_generator/pegen/c_generator.py
@@ -694,8 +694,8 @@ class CParserGenerator(ParserGenerator, GrammarVisitor):
                 if v == "_cut_var":
                     v += " = 0"  # cut_var must be initialized
                 self.print(f"{var_type}{v};")
-                if v == "_opt_var":
-                    self.print("UNUSED(_opt_var); // Silence compiler warnings")
+                if v.startswith("_opt_var"):
+                    self.print(f"UNUSED({v}); // Silence compiler warnings")
 
             with self.local_variable_context():
                 if is_loop: