Consistency of function attributes between prototype and definition

[Segher Boessenkool]

On Fri, Oct 02, 2015 at 01:25:31PM +0200, Florian Weimer wrote:
> glibc has a preprocessor macro called internal_function which switches
> to a different calling convention on certain targets (i386 uses stdcall
> and regparams).  For non-K&R function definitions, the compiler enforces
> that both the prototype declaration and the definition match.
> 
> When someone writes a patch on a different architecture than i386 and
> forgets to specify internal_function on both prototype and definition,
> the build will pass, even though i386 will not compile.
> 
> Is there a way to use a certain harmless attribute to detect this
> mismatch even on architectures where internal_function has no effect?

Maybe aligned(1) will do what you want?


Segher