Fastcgi and STL string problem - how to debug FCGX_ applications?

Hello pps,

I'm not sure if it's conclusive that fcgi doesn't work well
with STL or STL string? If it is, it would be sad.

I don't mind moving to the FCGX_ interface. My concern is,
doesn't it make it more difficult to debug? By using fcgi_stdio.h
it's very easy to debug the app as a stand alone CGI application
just by setting some environment variables in a script. I wonder
how you debug with FCGX_ functions?

-- 
Best regards,
Jack

Friday, September 2, 2005, 11:59:18 PM, you wrote:

p> Jack wrote:
>> Hello all,
>> 
>> I experienced a problem with STL string recently.
>> In one of the libraries I use, <string> is referenced
>> in the header files. I can compile and run it in a console.
>> The printouts looked correct. However when I ran it as fcgi
>> app, I got an error 500, meaning the printouts were not being
>> intercepted by fcgi. I didn't have a clue why this happened
>> and had to comment out function calls to the library but this
>> didn't help. Then I commented out the header file inclusions.
>> The problem went away. Then I dig into the header file and comment
>> out the code line by line. Eventually I find that as long as I
>> have #include <string> in the library's header file, I'll get
>> error 500. Then of course without that line the code won't compile.
>> I then moved the inclusion of the library .h ahead of fcgi_studio.h,
>> the code compiled and worked fine. It seems that <string> must be
>> included before fcgi_studio.h?

p> fcgi_stdio.h is probably designed that function names are re#define ed,
p> so when you include <string> it somewhere includes something from 
p> iostreams (for operator<<) and fcgi_stdio's redefines don't work. I
p> personally don't like to use fcgi_xxx with c++, and hope that for c++
p> there will be separate version without redefining standart functions
p> (people may simply use std::printf(...) instead of printf(...) and it
p> will not work with fcgi). For cpp there should be streambuf's to use
p> fcgi with iostreams and all thouse fget, fprint etc, but defined in
p> separate namespace (eg. fcgi). I wrote a simple streambuf for using fcgi
p> with iostreams, but I still have some problems with it :)
p> ...

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