GCC, GDB v6 and -fomit-frame-pointer

Daniel Jacobowitz drow@mvista.com
Thu Oct 9 12:39:00 GMT 2003


On Thu, Oct 09, 2003 at 10:43:22AM +0100, Alex Hornby wrote:
> 
> Does the new DWARF2 call frame in gdb 6.0 support mean programs compiled 
> with GCC and -fomit-frame-pointer can now be debugged? That would be 
> great as -fomit-frame-pointer provides quite a performance boost on x86.
> 
> Assuming this is possible, what GCC and binutils versions would be 
> needed to take advantage of this?

In general yes.  Backtraces should work.  Ultra-accurate argument and
local variable printing requires -fvar-tracking in GCC so it's a little
flaky now, but unwinding should be fine.

Anything recent.  I think 3.2, 3.3 are fine.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer



More information about the Gcc mailing list