[PATCH] Enable _FORTIFY_SOURCE=3 for gcc 12 and above

[Siddhesh Poyarekar]

On 17/12/2021 18:47, Adhemerval Zanella via Libc-alpha wrote:
> 
> 
> On 17/12/2021 01:07, Siddhesh Poyarekar via Libc-alpha wrote:
>> gcc 12 now has support for the __builtin_dynamic_object_size builtin.
>> Adapt the macro checks to enable _FORTIFY_SOURCE=3 on gcc 12 and above.
>>
>> Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
> 
> With gcc version 12.0.0 20211217 (experimental) [master r12-6038-g411ac94611f]
> I am seeing two new failures:
> 
>    FAIL: debug/tst-chk7
>    FAIL: debug/tst-chk8

This should now work on gcc trunk as of r12-6482, tested with:

gcc version 12.0.0 20220112 (experimental) (GCC)

OK to commit?

Thanks,
Siddhesh