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clang does not like flexible array in the struct #14763

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clang does not like flexible array in the struct #14763

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clang does not like flexible array in the struct
Apr 18, 2023
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Apr 18, 2023
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7 changes: 7 additions & 0 deletions include/sys/dnode.h
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Original file line number Diff line number Diff line change
Expand Up @@ -124,8 +124,13 @@ extern "C" {
* Use the flexible array instead of the fixed length one dn_bonus
* to address memcpy/memmove fortify error
*/
#if defined(__GNUC__) && !defined(__clang__)
#define DN_BONUS(dnp) ((void*)((dnp)->dn_bonus_flexible + \
(((dnp)->dn_nblkptr - 1) * sizeof (blkptr_t))))
#else
#define DN_BONUS(dnp) ((void*)((dnp)->dn_bonus + \
(((dnp)->dn_nblkptr - 1) * sizeof (blkptr_t))))
#endif
#define DN_MAX_BONUS_LEN(dnp) \
((dnp->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ? \
(uint8_t *)DN_SPILL_BLKPTR(dnp) - (uint8_t *)DN_BONUS(dnp) : \
Expand Down Expand Up @@ -270,10 +275,12 @@ typedef struct dnode_phys {
sizeof (blkptr_t)];
blkptr_t dn_spill;
};
#if defined(__GNUC__) && !defined(__clang__)
struct {
blkptr_t __dn_ignore4;
uint8_t dn_bonus_flexible[];
};
#endif
};
} dnode_phys_t;

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