I change the demo code of program_option first.cpp as below, when I compiled
with
cl /MDd /EHsc /D "BOOST_ANY_DYN_LINK" /D "_STLP_DEBUG" first.cpp
when run "first --help", a runtime error will occur.
when cl /MD /EHsc /D "BOOST_ANY_DYN_LINK" first.cpp, there is no runtime
error running "first --help".
----------------------------------------------------------------------------
-------------------
#include
namespace po = boost::program_options;
#include <iostream>
#include <iterator>
using namespace std;
int main(int ac, char* av[])
{
try {
po::options_description desc("Allowed options");
desc.add_options()
("help", "produce help message, a very very very very very long
long long long long long information") // The reason of rumtime error
("compression", po::value<int>(), "set compression level")
;
po::variables_map vm;
po::store(po::parse_command_line(ac, av, desc), vm);
po::notify(vm);
if (vm.count("help")) {
cout << desc << "\n";
return 1;
}
if (vm.count("compression")) {
cout << "Compression level was set to "
<< vm["compression"].as<int>() << ".\n";
} else {
cout << "Compression level was not set.\n";
}
}
catch(exception& e) {
cerr << "error: " << e.what() << "\n";
return 1;
}
catch(...) {
cerr << "Exception of unknown type!\n";
}
return 0;
}
----------------------------------------------------------------------------
------------------------
I also trace the error and find it occurs in the code
call format_one()/format_description/format_paragraph
The error code is line 361, options_description.cpp:
if (line_begin + (line_length - indent) > par_end)
{
line_end = par_end;
}
else
{
line_end = line_begin + (line_length - indent);
}
----- Original Message -----
From: "Vladimir Prus"
To:
Sent: Tuesday, September 06, 2005 1:51 PM
Subject: Re: [Boost-users] A error when using long option
description,program_options library
??? wrote:
This runtime error only occurs when debug version, the release version
has
no such problem. The long option description can not be printed.
My platform is vc7.1+stlport 4.62+boost 1.33, I also define the macro
_STLP_DEBUG and BOOST_LIB_DIAGNOSTIC.
Some extraction of my code:
operatoins.add_options()
("difference,d", "Get all the word of mine, origin file, my file,
output file")
.......
when print "Get all the word of mine, origin file, my file, output ", a
runtime error occurs, the program terminates.
Please provide the minimal complete program that reproduces this, and I'll
try to debug this.
- Volodya
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