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POboost::program_options gives malloc error
 

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    <p>I have the following toy program that gives errors with the MacPorts gcc on OSX 10.6</p> <pre><code>#include &lt;boost/program_options.hpp&gt; namespace po = boost::program_options; #include &lt;iostream&gt; using namespace std; int main(int ac, char* av[]) { po::options_description desc("Allowed options"); desc.add_options() ("help", "produce help message") ; po::variables_map vm; po::store(po::parse_command_line(ac, av, desc), vm); po::notify(vm); if (vm.count("help")) { cout &lt;&lt; desc &lt;&lt; "\n"; return 0; } cout &lt;&lt; "Program continues\n"; return 0; } </code></pre> <p>I have boost version 1.52 installed with MacPorts. I compile the program as</p> <pre><code>g++ a.cpp -lboost_program_options-mt -L/opt/local/lib -g -O0 </code></pre> <p>It compiles fine:</p> <pre><code>$ ./a.out Program continues </code></pre> <p>But it cannot print the help message:</p> <pre><code>$ ./a.out --help Allowed options: a.out(40110) malloc: *** error for object 0x7fff70ca3500: pointer being freed was not allocated *** set a breakpoint in malloc_error_break to debug Abort trap </code></pre> <p>I've heard that stuff like this can happen if the libraries are compiled with a different version of gcc than the one used to build the program. How do I check for this? I have</p> <pre><code>$ g++ --version g++ (MacPorts gcc47 4.7.2_2) 4.7.2 </code></pre> <p><strong>Update</strong>: this seems to work on a Linux machine with and older Boost.</p> <p><strong>Update 2</strong>: the output of gdb follows</p> <pre><code>(gdb) run Starting program: /Users/yasir/Downloads/mask.util/a.out --help Reading symbols for shared libraries ++++.. done Allowed options: a.out(42256) malloc: *** error for object 0x7fff70ca3500: pointer being freed was not allocated *** set a breakpoint in malloc_error_break to debug Program received signal SIGABRT, Aborted. 0x00007fff821030b6 in __kill () (gdb) bt #0 0x00007fff821030b6 in __kill () #1 0x00007fff821a39f6 in abort () #2 0x00007fff820bb195 in free () #3 0x00000001001188b4 in std::basic_stringbuf&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;::overflow () (gdb) </code></pre> <p><strong>Update 3</strong>: The program works fine with the Xcode gcc42, the problem only occurs with the MacPorts gcc.</p>
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    1. COThis code looks correct to me (compared with my sourcecode using program_options). Could you run this in gdb (compile with -ggdb3 -O0 and run `gdb --args ./a.out --help` and type `run` and `bt`)?
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    2. CO@RafałRawicki, just added the gdb info after compiling with your flags
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