1827         let block_num = self.match_block("expected branch destination block")?;  in parse_exception_table()  localVariable
1829         let normal_return = ctx.function.dfg.block_call(block_num, &args);  in parse_exception_table()
1849                     let block_num = self.match_block("expected branch destination block")?;  in parse_exception_table()  localVariable
1851                     let block_call = ctx.function.dfg.block_call(block_num, &args);  in parse_exception_table()
1857                     let block_num = self.match_block("expected branch destination block")?;  in parse_exception_table()  localVariable
1859                     let block_call = ctx.function.dfg.block_call(block_num, &args);  in parse_exception_table()
1972         let block_num = self.match_block("expected block header")?;  in parse_basic_block()  localVariable
1973         let block = ctx.add_block(block_num, self.loc)?;  in parse_basic_block()
1975         if block_num.as_u32() >= MAX_BLOCKS_IN_A_FUNCTION {  in parse_basic_block()
2714                 let block_num = self.match_block("expected jump destination block")?;  in parse_inst_operands()  localVariable
2716                 let destination = ctx.function.dfg.block_call(block_num, &args);  in parse_inst_operands()
2726                     let block_num = self.match_block("expected branch then block")?;  in parse_inst_operands()  localVariable
2728                     ctx.function.dfg.block_call(block_num, &args)  in parse_inst_operands()
2732                     let block_num = self.match_block("expected branch else block")?;  in parse_inst_operands()  localVariable
2734                     ctx.function.dfg.block_call(block_num, &args)  in parse_inst_operands()
2745                 let block_num = self.match_block("expected branch destination block")?;  in parse_inst_operands()  localVariable
2747                 let destination = ctx.function.dfg.block_call(block_num, &args);  in parse_inst_operands()