Re: [Boost-users] Proper initialization of a boost::shared_ptr<> inaconstructor

From: Peter Dimov (pdimov_at_[hidden])
Date: 2007-03-22 20:46:55

Stephen Torri wrote:
> On Fri, 2007-03-23 at 01:30 +0200, Peter Dimov wrote:
>> Stephen Torri wrote:
>>
>>> I am attempting to hunt down why I am getting a segmentation fault
>>> from the boost::shared_ptr class.
>>
>> You could try #defining BOOST_SP_ENABLE_DEBUG_HOOKS and adding
>> libs/smart_ptr/src/sp_debug_hooks.cpp to your project, which is a
>> simple checker that tries to catch common problems.
>>
>> You might also wish to verify that you aren't mixing single-threaded
>> and multithreaded code or libraries in the same program.
>
> As far as I know I have a single-threaded library I am creating. I put
> the BOOST_SP_ENABLE_DEBUG_HOOKS into the compile time flags for g++. I
> added the source file, sp_debug_hooks.cpp, into the build. I take it
> the checks are done when the library code is executed?

Yes, there are a bunch of assertions in sp_debug_hooks that attempt to catch 
heap- and shared_ptr-related errors. Make sure you don't #define NDEBUG, 
though.

If the asserts don't trigger, your problem might be deeper than a simple 
invalid use of shared_ptr. If you post a backtrace/call stack of one of your 
crashes, we may be able to help.