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[zfs-2.2.8] GCC: Fix array subscript check
Fix a zfs-2.2.8 GCC check on Fedora 42: module/zfs/ddt.c:445:9: warning: array subscript -1 is below array bounds of 'ddt_stat_t[64]' {aka 'struct ddt_stat[64]'} [-Warray-bounds=] 445 | ddt_stat_add(&ddh->ddh_stat[bucket], &dds, neg); Signed-off-by: Tony Hutter <hutter2@llnl.gov>
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@ -438,7 +438,8 @@ ddt_stat_update(ddt_t *ddt, ddt_entry_t *dde, uint64_t neg)
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ddt_stat_generate(ddt, dde, &dds);
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bucket = highbit64(dds.dds_ref_blocks) - 1;
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ASSERT(bucket >= 0);
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if (unlikely(bucket >= 0)) /* if() needed for GCC bounds check */
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ASSERT(bucket >= 0);
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ddh = &ddt->ddt_histogram[dde->dde_type][dde->dde_class];
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