On 17 April 2011 17:20, doug livesey wrote: > Hi -- I've installed GCC 4.6.0 on my MacBook Pro (running Snow > Leopard), and have compiled a simple hello world c++ program with it. > Unfortunately, when I try to do something more complex using the Boost > Serialization library, the code compiles and links, but I get the > following error when I run it: > run_features(2872) malloc: *** error for object 0x100502060: > pointer being freed was not allocated > *** set a breakpoint in malloc_error_break to debug > > This occurs when I try to create an xml archive with a stringstream. > The code compiles fine under GCC 4.2, it's only with 4.6.0 that I get > this error. I reinstalled Boost with GCC 4.6.0 (by fixing symlinks to > cc, gcc, and g++ & using homebrew) to be sure that it wasn't something > there. > For reference, the error is caused by line 24 of this file: > https://gist.github.com/923262 > I'm just learning C++ & GCC development, so I'm a bit stumped, now, as > to what I can do next -- could anyone advise me on how I might resolve > this, or where I might look for information to help me? Is your program definitely using new libstdc++.so from the GCC 4.6.0 you installed yourself, rather than the system's default libstdc++.so? Did you build GCC 4.6.0 with --enable-fully-dynamic-string in the configure options? I believe that is necessary on Snow Leopard, because the system libraries are built that way.