Hi, we are using the latest git master version of libunwind. We have code that creates a backtrace using libunwind and it works just fine if it is called explicitely. The same code however crashes on the ARM platform if it is invoked from a signal handler. The idea is of course to get a backtrace if the application segfaults. This does work fine (with the same code) on x86.
We are on Linux 2.6.35.3, using uCLibC 0.9.30.1. The platform uses an XScale-V3 based processor that implements the ARMv5te architecture, the ABI is EABI. The crash always happens after unwind_step() has reached __default_sa_restorer() from /lib/libc.so.0. I can't tell exactly what goes wrong, but it appears that the next call to unwind_step() causes the crash. I've compiled tests/test-async-sig.c for the target platform and it also crashes. I've done done googling and stumpled across this post from 2007, I wonder if it is in any way related: http://sourceware.org/ml/libc-ports/2007-05/msg00002.html Any help with this would be much appreciated, Sven -- Sven Neumann Head of Software Development RAUMFELD GmbH | Reichenberger Str. 124 | 10999 Berlin | Germany Tel: +49.30.340.60.98.0 | Fax: +49.30.340.60.98.99 | [email protected] _______________________________________________ Libunwind-devel mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/libunwind-devel
