在a.so-fi中使用C模块时出现分段错误

from classify import BayesClassifier class Analyzer: def __init__(self): self.classify = BayesClassifier('/home/user/yakamoz/srcanalyzer/classification/training.tab') if __name__ == '__main__': a = Analyzer() # the following is a string of Chinese character, which, I am sure, # has no influence on the Segmentation fault, you can just suppose # it as a paragraph in English. text = "市委常委、纪委书记杨娟高度评价我县基层党风廉政建设：\ 务实创新成效显著作者：县纪委办公室发布时间：11月27日下午，\ 市委常委、纪委书记杨娟率领市纪委副书记蒋玉平、王友富，\ 市纪委常委、秘书长任斌，市纪委机关党委书记刘林建一行来我\ 县调研基层党风廉政建设。调研中，杨娟高度评价我县基层党风廉政建设，\ 认为工作务实创新，成效显著。县委书记陈朝先，县委副书记季代双，县委常委、\ 纪委书记韩忠明陪同调研。杨娟一行先后来到两河镇、西部花都、两江广场、\ 工业园区等地实地调研我县基层党风廉政建设，检阅我县“两化”互动、“三化”\ 联动发展成果。查阅相关资料在两河镇，杨娟认真听取了两河片区纪工委\ 日常工作开展情况的汇报，仔细翻阅了巡查工作日记和接访记录。杨娟指出，\ 设置乡镇片区纪工委是加强基层纪检组织建设的创新举措。\ 盐亭在全市率先设置、运行纪工委以来，在化解农村信访矛盾，理顺群众情绪，\ 强化基层办案工作等方面取得了明显成效。她要求，要总结提炼片区纪工委的经验，\ 进一步明确职能职责，在机构设置、人员配备、制度建设等方面进行探索实践，\ 为全市基层纪检组织建设提供有益经验借鉴。杨娟还饶有兴趣地参观了两河镇\ 的机关廉政文化建设" print str(a.classify.classify_text(text)[0])

import _ahocorasick __all__ = ['KeywordTree'] # A high level version of the keyword tree. Most of the methods here # are just delegated over to the underlying C KeywordTree #(in the .so file, which is not shown here). class KeywordTree(object): def __init__(self): self.__tree = _ahocorasick.KeywordTree(); def add(self, s): return self.__tree.add(s) def make(self): return self.__tree.make() def zerostate(self): return self.__tree.zerostate() ##### !! I found this is where the segmentation fault occurs def __findall_helper(self, sourceBlock, allow_overlaps, search_function): """Helper function that captures the common logic behind the two findall methods.""" startpos = 0 startstate = self.zerostate() loop_times = 0 while True: #print spot_1 match = search_function(sourceBlock, startpos, startstate) #print spot_2 if not match: break yield match[0:2] startpos = match[1] if allow_overlaps: #which in my case is always false startstate = match[2] else: loop_times = loop_times + 1 #print spot_3 startstate = self.zerostate() #print spot_4 #print loop_times def findall(self, sourceBlock, allow_overlaps=0): return self.__findall_helper(sourceBlock, allow_overlaps,self.__tree.search)

(gdb) r analyzer.py Starting program: /usr/local/bin/python analyzer.py [Thread debugging using libthread_db enabled] Detaching after fork from child process 11499. training finished Program received signal SIGSEGV, Segmentation fault. 0x00007ffff178956d in ahocorasick_KeywordTree_search_helper (state=0x85c730, string=0x8967d4 "【中国环保在线市场行情】“我国将在2016年启动全国碳市场。全国碳交易市场的首批行业企业将由电力、冶金、有色、建材、化工5个传统制造业和航", <incomplete sequence \347\251>..., n=140733193395828, startpos=118366835, out_start=0x7fffffffd468, out_end=0x7fffffffd460, out_last_state=0x7fffffffd458) at aho-corasick.c:216 216 aho-corasick.c: No such file or directory. in aho-corasick.c Missing separate debuginfos, use: debuginfo-install glibc-2.12- 1.149.el6.x86_64 (gdb) bt #0 0x00007ffff178956d in ahocorasick_KeywordTree_search_helper (state=0x85c730, string=0x8967d4 "【中国环保在线市场行情】“我国将在2016年启动全国碳市场。全国碳交易市场的首批行业企业将由电力、冶金、有色、建材、化工5个传统制造业和航", <incomplete sequence \347\251>..., n=140733193395828, startpos=118366835, out_start=0x7fffffffd468, out_end=0x7fffffffd460, out_last_state=0x7fffffffd458) at aho-corasick.c:216 #1 0x00007ffff178a2b1 in ahocorasick_KeywordTree_basesearch (self=0x7ffff7f6c230, args=0x7ffff0ca1a50, kwargs=0x0, helper=0x7ffff1789525<ahocorasick_KeywordTree_search_helper>) at py_wrapper.c:190 #2 0x00007ffff178a358 in ahocorasick_KeywordTree_search (self=0x7ffff7f6c230, args=0x7ffff0ca1a50, kwargs=0x0) at py_wrapper.c:212 #3 0x00000000004a7103 in call_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4013 #4 PyEval_EvalFrameEx (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:2666 #5 0x0000000000507e8d in gen_send_ex (gen=0x7904640, arg=0x0, exc=<value optimized out>) at Objects/genobject.c:84 #6 0x00000000004a25da in PyEval_EvalFrameEx (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:2497 #7 0x00000000004a805b in fast_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4099 #8 call_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4034 #9 PyEval_EvalFrameEx (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:2666 #10 0x00000000004a8bd7 in PyEval_EvalCodeEx (co=0x7ffff1ff54b0, globals=<value optimized out>, locals=<value optimized out>, args=<value optimized out>, argcount=3, kws=0x9984520, kwcount=0, defs=0x7ffff2016968, defcount=1, closure=0x0) at Python/ceval.c:3253 #11 0x00000000004a6dce in fast_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4109 #12 call_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4034 #13 PyEval_EvalFrameEx (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:2666 #14 0x00000000004a805b in fast_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4099 #15 call_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4034 #16 PyEval_EvalFrameEx (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:2666 #17 0x00000000004a8bd7 in PyEval_EvalCodeEx (co=0x7ffff7ec4130, globals=<value optimized out>, locals=<value optimized out>, args=<value optimized out>, argcount=0, kws=0x0, kwcount=0, defs=0x0, defcount=0, closure=0x0) at Python/ceval.c:3253 #18 0x00000000004a8ce2 in PyEval_EvalCode (co=<value optimized out>, globals=<value optimized out>, locals=<value optimized out>) at Python/ceval.c:667 #19 0x00000000004c91fe in run_mod (fp=0x880ee0, filename=0x7fffffffe30c "analyzer.py", start=<value optimized out>, globals=0x7fc140, locals=0x7fc140, closeit=1, flags=0x7fffffffdea0) at Python/pythonrun.c:1346 #20 PyRun_FileExFlags (fp=0x880ee0, filename=0x7fffffffe30c "analyzer.py", start=<value optimized out>, globals=0x7fc140, locals=0x7fc140, closeit=1,flags=0x7fffffffdea0) at Python/pythonrun.c:1332 #21 0x00000000004c9414 in PyRun_SimpleFileExFlags (fp=0x880ee0, filename=0x7fffffffe30c "analyzer.py", closeit=1, flags=0x7fffffffdea0)at Python/pythonrun.c:936 #22 0x0000000000414a4f in Py_Main (argc=<value optimized out>, argv=<value optimized out>) at Modules/main.c:599 #23 0x0000003fd281ed5d in __libc_start_main () from /lib64/libc.so.6 #24 0x0000000000413bc9 in _start ()

1条回答

网友

1楼 · 发布于 2024-06-17 09:10:12

我明白了

  self.__tree = _ahocorasick.KeywordTree();

那么

^{pr2}$

最后呢

^{3}$

所以我的猜测是函数search_long在你做__tree.zerostate()时是无效的，所以你得到了未定义的行为，在某些情况下会导致segfault。它有很多代码，而且有一个不透明的库，所以很难确定。最好的方法是查看文档并确保正确使用库。在

print是一个红鲱鱼，通过分配一些东西只会迫使崩溃更快地发生。在

希望有帮助。在

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