I just RTFM pages of gcc and I see that -Os will enable -fomit-frame-pointer. Is it possible to not omit frame-pointer while the optimization level is -O1 ? [P.S: F = Fine] On Sun, Jun 30, 2013 at 4:25 PM, Andrew Haley <aph@xxxxxxxxxx> wrote: > On 06/30/2013 07:23 AM, vijay nag wrote: >> Binary compiled with GCC-4.7.2 has a different epilogue/prologue >> sequence when compared with the same binary emitted by GCC-3.3.6. > > Well, yes. A lot of work has been done on GCC since 2005. > >> I'm sure I haven't used fomit-frame-pointer compilation flag. What >> could be the issue here ? Is the linker doing some optimization >> here? It has rendered my executable undebuggable in gdb. > > This must be a GDB problem, then. It all looks perfectly reasonable. > Which GDB is this? > > Andrew. >
