Method makeup_call_string_arg

src/program/transform.rs:230–283

make up a variable for this call's string arg.

(
        &mut self,
        call: &Node,
        array_pos: usize,
        constraint: &Option<Constraint>,
    )

    /// make up a variable for this call's string arg.
    fn makeup_call_string_arg(
        &mut self,
        call: &Node,
        array_pos: usize,
        constraint: &Option<Constraint>,
    ) -> Result<()> {
        let init_id = self.fuzzer_shim.get_init_id_inc();
        let fuzz_str = format!("fuzz_str_{}", init_id);
        if let Some(constraint) = constraint {
            match constraint {
                Constraint::ArrayLen((array_pos, integer_pos)) => {
                    // format the declaration name and type of this array var.
                    let arg_ty = get_func_arg_decl_type(call, *integer_pos);
                    let fuzz_size = if arg_ty.contains('*') {
                        format!("static_cast<{arg_ty}>(&fuzz_str_sz_{init_id})")
                    } else {
                        format!("static_cast<{arg_ty}>(fuzz_str_sz_{init_id})")
                    };

                    if integer_pos > array_pos {
                        self.change_call_arg(call, *integer_pos, &fuzz_size)?;
                        self.change_call_arg(call, *array_pos, &fuzz_str)?;
                    } else {
                        self.change_call_arg(call, *array_pos, &fuzz_str)?;
                        self.change_call_arg(call, *integer_pos, &fuzz_size)?;
                    }
                }
                Constraint::ArrayIndex((array_pos, integer_pos)) => {
                    // format the declaration name and type of this array var.
                    let arg_ty = get_func_arg_decl_type(call, *integer_pos);
                    let index_stmt = format!("\n\tFDPGetRandomInteger({arg_ty}, fuzz_str_idx_{init_id}, fuzz_str_sz_{init_id});");
                    let fuzz_size = if arg_ty.contains('*') {
                        format!("static_cast<{arg_ty}>(&fuzz_str_idx_{init_id})")
                    } else {
                        format!("static_cast<{arg_ty}>(fuzz_str_idx_{init_id})")
                    };

                    if integer_pos > array_pos {
                        self.change_call_arg(call, *integer_pos, &fuzz_size)?;
                        self.change_call_arg(call, *array_pos, &fuzz_str)?;
                    } else {
                        self.change_call_arg(call, *array_pos, &fuzz_str)?;
                        self.change_call_arg(call, *integer_pos, &fuzz_size)?;
                    }
                    let ins_pos = get_fuzzer_shim_end_loc(&self.src_file)?;
                    self.seek_and_rewrite(ins_pos, 0, &index_stmt)?;
                }
                _ => unreachable!(),
            }
        } else {
            self.change_call_arg(call, array_pos, &fuzz_str)?;
        }
        Ok(())
    }

    fn makeup_call_integer_arg(&mut self, call: &Node, arg_pos: usize, ty: &str) -> Result<()> {
        let c_ty_name = match ty {