Ubuntu
gcc-4.1 package

  1. Bug #52465
  2. Comment #1

Comment 1 for bug 52465

Revision history for this message
Matthias Klose (doko) wrote : Re: [Bug 52465] [libgcc1] segfault on ppc when unwinding stack (c++ exceptions, mono exceptions)

unable to reproduce with g++-4.1.1-8ubuntu1. Please recheck.

Sebastian Dröge schrieb:
> Public bug reported:
>
> Hi,
> the latest libgcc1 version (4.1.1-2ubuntu5) is unable to do stack unwinding (_Unwind_RaiseException() and __frame_state_for()) on ppc. When downgrading to 4.1.1-2ubuntu3 it works again so I assume it's caused by SSP.
> This let mono, schroot FTBFS and probably renders many packages unusable on ppc.
>
> The small C++ program pasted at the bottom segfaults on PPC and works fine on x86 and amd64. The backtrace at the segfault is:
> #0 0x0fdf7404 in __frame_state_for () from /lib/libgcc_s.so.1
> #1 0x0fdf8174 in _Unwind_RaiseException () from /lib/libgcc_s.so.1
> #2 0x0ffadf48 in __cxa_throw () from /usr/lib/libstdc++.so.6
> #3 0x10000bcc in main ()
>
> Bye
>
> ------
>
> #include <stdexcept>
> #include <iostream>
>
> int main()
> {
> try
> {
> throw std::runtime_error("Exception thrown");
> }
> catch (std::runtime_error const& e)
> {
> std::cerr << "Caught runtime_error: " << e.what() << std::endl;
> }
> catch (...)
> {
> std::cerr << "Caught unknown exception!" << std::endl;
> }
> }
>
> ** Affects: gcc-4.1 (Ubuntu)
> Importance: Critical
> Status: Confirmed
>
> ** Changed in: gcc-4.1 (Ubuntu)
> Importance: Untriaged => Critical
> Status: Unconfirmed => Confirmed
>
>