marko 06299dddd4 branches/zip: In purge, avoid dereferencing unset BLOB pointers of freshly ... inserted, uncommitted clustered index records when determining if a secondary index record that contains a column prefix of an externally stored column is referencing the clustered index record. field_ref_zero[]: A BLOB pointer full of zero, for use in comparisons. btr_copy_externally_stored_field_prefix(): Assert that the BLOB pointer is set. row_ext_lookup_ith(), row_ext_lookup(), row_ext_lookup_low(): Document that field_ref_zero is returned when the BLOB cannot be fetched. row_ext_lookup_low(): Return field_ref_zero and *len = 0 when the BLOB pointer is unset. row_build_index_entry(): Return NULL when a needed BLOB pointer cannot be dereferenced (row_ext_lookup returns field_ref_zero). Check the return value for NULL in callers. row_vers_impl_x_locked_off_kernel(): Avoid comparisons when row_build_index_entry() returns NULL. row_vers_old_has_index_entry(): Ignore records for which row_build_index_entry() returns NULL. The entry should never be NULL in rollback, but it may be NULL in purge. row_merge_buf_add(): Assert that row_ext_lookup() does not return field_ref_zero. The table will be locked during index creation.		2007-11-27 09:11:45 +00:00
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btr0btr.c	branches/zip: Remove const warnings reported by GCC 4.2.1.	2007-10-18 07:12:05 +00:00
btr0cur.c	branches/zip: In purge, avoid dereferencing unset BLOB pointers of freshly	2007-11-27 09:11:45 +00:00
btr0pcur.c	branches/zip: Minor cleanup of B-tree cursor operations.	2007-10-22 08:16:35 +00:00
btr0sea.c	branches/zip: Silence most GCC 4.2.1 warnings about const pointers.	2007-10-03 12:22:29 +00:00