Re: [22.1.90]: Point before start of properties

[Richard Stallman]

    Debugging GCC-optimized (under -O2) code is not just hard, it's
    downright impossible!

This is unfortunate, but fixing it is very hard.  It would probably require
new ways to communcate info to GDB about the optimizations that were done,
and changes in GCC and GDB.

It would be great if someone implements these features, but there's no
use complaining that people have not done it.

    It can be solved almost trivially, IMO, by providing a special -Ox
    switch which would turn off every optimization whose results cannot be
    expressed reliably using the modern debug info formats.

Doesn't -O1 do that job?