Method misra_21_14

addons/misra.py:4022–4064

(self, data)

                    self.reportError(token, 21, 12)

    def misra_21_14(self, data):
        # buffers used in strcpy/strlen/etc function calls
        string_buffers = []
        for token in data.tokenlist:
            if token.str[0] == 's' and isFunctionCall(token.next, data.standards.c):
                name, args = cppcheckdata.get_function_call_name_args(token)
                if name is None:
                    continue
                def _get_string_buffers(match, args, argnum):
                    if not match:
                        return []
                    ret = []
                    for a in argnum:
                        if a < len(args):
                            arg = args[a]
                            while arg and arg.str in ('.', '::'):
                                arg = arg.astOperand2
                            if arg and arg.varId != 0 and arg.varId not in ret:
                                ret.append(arg.varId)
                    return ret
                string_buffers += _get_string_buffers(name == 'strcpy', args, [0, 1])
                string_buffers += _get_string_buffers(name == 'strncpy', args, [0, 1])
                string_buffers += _get_string_buffers(name == 'strlen', args, [0])
                string_buffers += _get_string_buffers(name == 'strcmp', args, [0, 1])
                string_buffers += _get_string_buffers(name == 'sprintf', args, [0])
                string_buffers += _get_string_buffers(name == 'snprintf', args, [0, 3])

        for token in data.tokenlist:
            if token.str != 'memcmp':
                continue
            name, args = cppcheckdata.get_function_call_name_args(token)
            if name is None:
                continue
            if len(args) != 3:
                continue
            for arg in args[:2]:
                if arg.str[-1] == '\"':
                    self.reportError(arg, 21, 14)
                    continue
                while arg and arg.str in ('.', '::'):
                    arg = arg.astOperand2
                if arg and arg.varId and arg.varId in string_buffers:
                    self.reportError(arg, 21, 14)

    def misra_21_15(self, data):
        for token in data.tokenlist: