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我实际上正在编写一个包含这四个文件的个人 Frama-C 插件：

分析TU_core.ml

module Options = AnalyseTU_options

open Cil_types

let rec member x list1 = match list1 with 
    []->false
    |hd :: tl -> if hd = x then true else member x tl

let rec sandr list2 result= match list2 with
    []-> Format.fprintf out "job termine"
    |hd :: tl -> if member hd result = false then begin result::hd ; Format.fprintf out hd; sandr tl result end
        else sandr tl result

class print_analyse out = object 
    inherit Visitor.frama_c_inplace

method vstmt s=
    let listing =[] in
    let impacted = !Db.Impact.compute_pragmas in
    let impacted2= impacted.Stmt.loc in
    sandr impacted2 listing;
    Cil.DoChildren
   end

和 ：

分析TU_register.ml

open AnalyseTU_options
open AnalyseTU_core

let run () =
    if Enabled.get () then
    let filename=OutputFile.get () in
    let chan = open_out filename in
    let fmt = Format.formatter_of_out_channel chan in
    Visitor.visitFramacFileSameGlobals (new print_analyse fmt) (Ast.get ());
    close_out chan

let () = Db.Main.extend run

和 ：

分析TU_options.ml

module Self = Plugin.register 
(struct
  let name = "analyse TU"
  let shortname = "TU"
  let help = "impacted statements computation from a source code modification and display consequently unit tests to be run in an output file"
end)

module Enabled = Self.False 
(struct
  let optilon_name = "-TU"
  let help = "when on (off by default), give the unit tests to be run"
end)

module OutputFile = Self.String 
(struct
  let option_name = "-TU-output"
  let default = "TUresults.txt"
  let arg_name = "output-file"
  let help = "name of the output file"
end)

最后是makefile：

FRAMAC_SHARE := $(shell frama-c -print-path)
FRAMAC_LIBDIR := $(shell frama-c -print-libpath)
PLUGIN_NAME = analyseTU
PLUGIN_CMO = analyseTU_options analyseTU_core analyseTU_register
include $(FRAMAC_SHARE)/Makefile.dynamic

所以，当我用 make 命令编译它时，我实际上得到了：

FILE "analyseTU_core.ml", line 9 :
Error: unbound value out
make : *** [analyseTU_core.cmo] erreur 2

我当时认为这是因为编译器不知道“out”这一事实，因此我将“out”替换为“chan”。顺便说一句，我遇到了同样的错误。

开发人员指南教程的代码中未定义“out”这一事实最终让我认为这个错误不是我想的那样......

你有没有遇到过？如果是，您是如何处理的？

4

1 回答 1

1

正如 camlspotter 所说，该错误确实只是意味着out未在环境中定义。您要么必须将其作为方法的参数提供，要么在out某处定义全局格式化程序。另一种可能性是使用printf而不是fprintf, 作为printf上的输出stdout，因此不需要格式化程序作为参数。最后，在 Frama-C 的特定上下文中，您应该考虑使用Analyse_TU_option.Self.feedback或它的同伴之一 ( result, debug, ...) 作为您的输出。

于 2014-09-18T12:19:44.803 回答