I don't know why I can't see this backtrace. The symbols from my own binary are loaded, and the package libc6-dbg is installed. Do I need to tell gdb where to find the libc symbols?
Program received signal SIGSEGV, Segmentation fault.
__memcpy_ia32 () at ../sysdeps/i386/i686/multiarch/../memcpy.S:74
74 ../sysdeps/i386/i686/multiarch/../memcpy.S: No such file or directory.
(gdb) bt full
#0 __memcpy_ia32 () at ../sysdeps/i386/i686/multiarch/../memcpy.S:74
No locals.
#1 0x00000000 in ?? ()
No symbol table info available.
(gdb)