On Fri, Sep 13, 2002 at 11:07:15AM +0100, Stuart Hughes wrote: > Hi, > > I've been trying to debug a simple multi-threaded test program using > gdb, and it always fails as follows: > > [New Thread 1024 (LWP > 39)] > > Program received signal SIGTRAP, Trace/breakpoint > trap. > [Switching to Thread 1024 (LWP > 39)] > warning: Warning: GDB can't find the start of the function at > 0xffffffff. > > I've tried various different compilers, gdb, glibc version but the > problem is the same. Note that I can debug non-threaded c/c++ programs > without any problem. My environment is as follows: > > CPU: NEC VR5432 > kernel: linux-2.4.10 + patches > glibc: 2.2.3 + patches Not enough patches I'd bet. Glibc 2.2.3 had an incorrect size listed for elf_gregset_t, and it was fixed in 2.2.5. That would cause this problem. > gdb: 5.2/3 from CVS > gcc: 3.1 (also tried 3.0.1) > binutils: Version 2.11.90.0.25 > > Does anyone have any idea what is wrong and how to fix it. > > Regards, Stuart > > -- Daniel Jacobowitz MontaVista Software Debian GNU/Linux Developer
