Is there a way not to optimize out "static const" at -Os?

[Jonathan Wakely]

On 22 October 2015 at 21:12, David Kang wrote:
>
>  Hi,
> I want to let the gcc leave the following static const at the optimization -Os.
> The functions "A_exec0", "A_initialize" are static function.
> I tried a few compiler options such as "-fkeep-static-consts".
> But gcc optimizes it out at -Os.
> My compiler is gcc-4.7.3.
> "-fkeep-static-functions" doesn't seem to be supported by my compiler.
>
> static const __attribute__((unused, section(".driver_table"))) driver_t driver = {
>   .type = "A_driver",
>   .initialize = A_initialize,
>   .executors = {A_exec0 }
> };
>
>  Any idea about how to keep the static const and keep the section ".driver_table"?

Did you try __attribute__((used)) ?