* Andreas Krebbel via Gcc: > For that purpose I save the argument registers to the stack as we > would do for a variable argument lists. But this time I also provide > the CFI to allow the unwinder to locate the save slots. Since I never > actually intend to restore the content there is no matching > cfi_restore for the cfi_offset and dwarf2cfi complains about the > traces being inconsistent because of that. I couldn't find a way to > prevent this. > > The only way I see right now is adding a new reg note to invalidate > the save information in the reg_save array in dwarf2cfi. > > Would this be acceptable? Is there perhaps an easier way to achieve that?
This is very interesting. I think we should do this in glibc for abort and __assert_fail for as many registers as possible, hopefully preserving more information for debuggers. Thanks, Florian
