Kefeng Wang 9530141455 riscv: Add ARCH_HAS_FORTIFY_SOURCE ...

FORTIFY_SOURCE could detect various overflows at compile and run time.
ARCH_HAS_FORTIFY_SOURCE means that the architecture can be built and
run with CONFIG_FORTIFY_SOURCE. Select it in RISCV.

See more about this feature from commit 6974f0c455
("include/linux/string.h: add the option of fortified string.h functions").

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

2021-03-09 18:18:31 -08:00

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