Re: .eh_frame section

["sfora dim" <sfora dot dim at gmail dot com>]

On 29 May 2007 15:27:43 -0700, Ian Lance Taylor <iant@google.com> wrote:
> > I wonder why when I compile standard C programs using "gcc -v simple.c"
> > I can see that the linker adds the "--eh-frame-hdr" parameter ?
>
> That option is always used if the linker supports it.
>
> > After all there is no use for the eh section when we don't support
> > exceptions, no ?
>
> Ideally the linker would not generate an EH header if there is no
> exception frame information.
>
> It is possible to use gcc to link C++ code, and it is desirable to
> always create an EH header if there is any exception frame
> information, so if there is a problem here I think it should be fixed
> in the linker.

I don't know if it is a problem. If it's a pure C program, and we're giving
the linker the "--eh-frame-hdr" - does it still generate the EH header ?
if so - does it waste memory ?
if yes, maybe the gcc driver should pass that parameter to the linker only
when there really is exception frame information ?

thank you
sfora
> Ian