problem with example response_file.cpp

[gvacanti@…]

The example works as advertised when the provided response file is used. If I modify the response file as follows:

-I bar1234567890123456789012345678901234567890 -I biz --magic=10

then the output is garbled:

Include paths: bar12�\pA5678A_bar12

I can fix the problem if I add

string sss= ss.str();

and replace the tokenizer line with

tokenizer<char_separator<char> > tok(sss, sep);

I'm not too sure why the problem occurs, as ss.str() is supposed to return a copy.

I work on Linux, gcc (Ubuntu 4.3.3-5ubuntu4) 4.3.3

[s.ochsenknecht@…]

valgrind shows the errors.

stringstream::str() returns a *copy* of the string. This is a temporary object. The tokenizer does further operations on the string which is descruted already. The string has to live as long as the tokenizer.

So, its not a bug of program_options. I think the testcase has to be adapted. I will attach a patch soon ...

[s.ochsenknecht@…]

patch

[Sascha Ochsenknecht]

(In [57808]) correct usage of tokenizer, memory bug, Fixes #3525