Need help : -O2 flag and GDB

[rinku24]

Hi,
For product version, I have to compile c++ code using -O2 flag for
optimization. But the problem is when I have to debug the core file,
GDB doesn't display any data.

I use g++ 3.0.40 and gdb 5.2 on Radhat linux. I was able to debug the
core with g++ 2.95 compiler event though -O2 flag was on.

What compiler and GDB version do you suggest?

[Victor Bazarov]

ri*****@yahoo.com wrote:

For product version, I have to compile c++ code using -O2 flag for
optimization. But the problem is when I have to debug the core file,
GDB doesn't display any data.

I use g++ 3.0.40 and gdb 5.2 on Radhat linux. I was able to debug the
core with g++ 2.95 compiler event though -O2 flag was on.

What compiler and GDB version do you suggest?

I suggest asking in gnu.g++.help or in comp.os.linux.development.apps.
But you're free to ignore my suggestion.

[MSR]

"Victor Bazarov" <v.********@comAcast.net> wrote in message
news:Or*******************@newsread1.mlpsca01.us.t o.verio.net...

ri*****@yahoo.com wrote:

For product version, I have to compile c++ code using -O2 flag for
optimization. But the problem is when I have to debug the core file,
GDB doesn't display any data.

I use g++ 3.0.40 and gdb 5.2 on Radhat linux. I was able to debug the
core with g++ 2.95 compiler event though -O2 flag was on.

What compiler and GDB version do you suggest?

I suggest asking in gnu.g++.help or in comp.os.linux.development.apps.
But you're free to ignore my suggestion.

Not a C++ question. Anyway you can use '-g' flag along with -O2. Not sure if
your version of gcc can take both flags but newer version certainly do.