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Compile fix for GCC in the LinuxKPI.

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Older versions of GCC don't allow flexible array members in a union.
Use a zero length array instead.

MFC after:	1 week
Reported by:	jbeich@
Sponsored by:	Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2018-02-17 08:12:35 +00:00
parent 3fa2c0489b
commit af4010be77
1 changed files with 4 additions and 4 deletions
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8
sys/compat/linuxkpi/common/include/asm/atomic.h
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@ -162,10 +162,10 @@ atomic_cmpxchg(atomic_t *v, int old, int new)
#define cmpxchg(ptr, old, new) ({ \ #define cmpxchg(ptr, old, new) ({ \
union { \ union { \
__typeof(*(ptr)) val; \ __typeof(*(ptr)) val; \
u8 u8[]; \ u8 u8[0]; \
u16 u16[]; \ u16 u16[0]; \
u32 u32[]; \ u32 u32[0]; \
u64 u64[]; \ u64 u64[0]; \
} __ret = { .val = (old) }, __new = { .val = (new) }; \ } __ret = { .val = (old) }, __new = { .val = (new) }; \
\ \
CTASSERT(sizeof(__ret.val) == 1 || sizeof(__ret.val) == 2 || \ CTASSERT(sizeof(__ret.val) == 1 || sizeof(__ret.val) == 2 || \