"Jonathan Wakely" <cow@compsoc.man.ac.uk> wrote in message news:20050506165617.GA27267@compsoc.man.ac.uk... | On Thu, May 05, 2005 at 09:13:07PM +0200, Thorsten Ottosen wrote: | I've not found a reduced test case yet, but will apply the fix to GCC | soon. It seems to be triggered by a "using namespace std;" before | including <vector>. | | In the meantime, I also tried to debug this failure: | | http://www.redi.uklinux.net/src/boost/status/cs-Linux-links.html#ptr_contain... | | It looks like a double-delete on a Base object, the second time it comes | to delete it the object's vtable is invalid, so trying to run the | derived dtor causes a segfault. | | I see this with GCC4 on both x86_64 Linux and i386 FreeBSD. | | I modified ptr_list.cpp to add a static int Base::counter, initialised | to zero, then added this to the ctors: | std::cerr << '+' << this << '\t' << ++counter << endl; | and made the dtor non-virtual (to prevent the vtable lookup) and added | this in the dtor body: | std::cerr << '-' << this << '\t' << --counter << endl; | | This produced: | | +0x80f40a0 1 | +0x80f4120 2 | +0x80f4160 3 | +0x80f41a0 4 | -0x80f40a0 3 | +0x80f40a0 4 | -0x80f41a0 3 | +0x80f4140 4 | +0x80f41a0 5 | -0x80f41a0 4 | +0x80f41a0 5 | +0x80f4220 6 | +0x80f4260 7 | +0x80f42a0 8 | +0x80f42e0 9 | +0x80f4320 10 | -0x80f40a0 9 | -0x80f4160 8 | -0x80f4260 7 | -0x80f42a0 6 | -0x80f42e0 5 | -0x80f4320 4 | -0x80f40a0 3 | | Notice how the last address is shown with more '-' than '+' | | That was as far as I got last night, I've not had time to debug any | further. | This happens when clear() is called on line 93 of sequence_test_data.hpp why is sequence_test_data included in the test for ptr_set? ...it should be associative_test-data.hpp | I'll keep looking into it when I get a chance if you don't have any | ideas what's going on. I don't have any idea. :-( It would be gerat if you could nail down this error! -Thorsten