Re: [PATCH 1/2] Add thread_info_cache_init() to all archs

From: Benjamin Herrenschmidt
Date: Wed May 21 2008 - 16:47:26 EST

On Wed, 2008-05-21 at 21:06 +0200, Sam Ravnborg wrote:
> It was discussed to add some run-time checks for this issue.
> But the examples given were a bit fluffy so I never integrated
> anything
> i kbuild to detect this.
> As this is only a bug for const weak functions they could be made
> non-const
> if they are seldomly used?

With the asm("") trick ?

I suppose, but I'm also happy to just reject the bad gcc...

It shouldn't be too hard to do a test case made of 2 files.


int foo(void)


int foo(void) __weak

int main(void)
return 0;

And check for "good" in the output of said program..

Can somebody test that ? Luke, you have a broken compiler, can you make
up some test that could be integrated in the kernel build system
easily ?

(I'm travelling right now, no time to play much with it myself).


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