Method handle_nested_call

src/analysis/fdsan.rs:374–400

Transform the nested call into multi-line calls.

(&mut self)

    // Transform the nested call into multi-line calls.
    fn handle_nested_call(&mut self) -> Result<()> {
        let mut global_id = 0;
        let mut visitor = self.get_new_visitor()?;
        let nested_calls = vec!["fuzz_fileno", "open", "fmemopen", "fileno"];

        while let Some((call, arg, nest_name)) = visitor.find_nested_call(&nested_calls) {
            let ins_loc = get_loc_before_stmt(&self.src_file, &call.range)?;
            let (arg_begin, arg_end) = get_sr_offset(&arg.range)?;
            let arg_content = get_source_code_content(&arg.range)?;
            let (var_name, init_stmt) =
                if nest_name == "fuzz_fileno" || nest_name == "open" || nest_name == "fileno" {
                    let var_name = format!("fuzz_fd_{global_id}");
                    let init_stmt = format!("\n\tint {var_name} = {arg_content};\n");
                    (var_name, init_stmt)
                } else {
                    let var_name = format!("fuzz_file_{global_id}");
                    let init_stmt = format!("\n\tFILE* {var_name} = {arg_content};\n");
                    (var_name, init_stmt)
                };
            self.seek_and_rewrite(arg_begin, arg_end - arg_begin, &var_name)?;
            self.seek_and_rewrite(ins_loc, 0, &init_stmt)?;
            global_id += 1;
            visitor = self.get_new_visitor()?;
        }

        Ok(())
    }

    fn add_sanitize_header(&mut self) -> Result<()> {
        let header = "#include \"FDSan.h\"\n";