On Sun, Feb 26, 2017 at 2:01 AM, Dmitry V. Levin <ldv@xxxxxxxxxxxx> wrote:
Include <stddef.h> (guarded by #ifndef __KERNEL__) to fix asm/signal.h
userspace compilation errors like this:
/usr/include/asm/signal.h:126:2: error: unknown type name 'size_t'
size_t ss_size;
As no uapi header provides a definition of size_t, inclusion
of <stddef.h> seems to be the most conservative fix available.
On the kernel side size_t is typedef'ed to __kernel_size_t, so
an alternative fix would be to change the type of sigaltstack.ss_size
from size_t to __kernel_size_t for all architectures except those where
sizeof(size_t) < sizeof(__kernel_size_t), namely, x32 and mips n32.
On x32 and mips n32, however, #include <stddef.h> seems to be the most
straightforward way to obtain the definition for sigaltstack.ss_size's
type.
Signed-off-by: Dmitry V. Levin <ldv@xxxxxxxxxxxx>
I'm not sure if this is the best fix. We generally should not include one
standard header from another standard header. Would it be possible
to use __kernel_size_t instead of size_t?
Arnd
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