As of 108649, defining BYTE_CODE_METER in src/bytecode.c causes
this error:

bytecode.c: In function 'exec_byte_code':
bytecode.c:562:7: error: lvalue required as increment operand
bytecode.c:562:7: error: lvalue required as increment operand

Most probably byte code metering should be fixed to reflect
changes introduced at 108598.

Dmitry