AIX/g++: Preventing early destruction of exception handling

[Michael Veksler <VEKSLER@xxxxxxxxxx>]

The following trivial code crashes on AIX-5.3 + gcc-4.2.2 (same with
gcc-3.4.3):

$ cat t.cpp
struct A { ~A() { try {throw 1;} catch(...) {} } };
A a;
int main() { }
$ g++ -g t.cpp
$ ./a.out
Abort

It looks like the libgcc_s.a(shr.o) library is destroyed (along with
exception supporting data structures) before the destructor of A has been
called. This is done by a function named _GLOBAL__FD_shr_o which seems to
be responsible for destruction of all global objects in libgcc.

When the destructor of A is called (by _GLOBAL__FD_a_out), exception
handling mechanism is already dead.

Is there anything constructive I can do to overcome this hurdle?
Should I open a PR (unless there is one, already open).
As far as I can tell, my code is well specified and defined from the ISO-C+
+ point of view, and is accepted on gcc+Linux and xlC+AIX. Only gcc+AIX
happens to problematic.


Thanks
   Michael