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MDEV-33623 Partitioning is broken on big endian architectures

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MDEV-33502 Slowdown when running nested statement with many partitions
caused this error as I failed to take into account bigendian architectures.

This patch also introduces bitmap_import() and bitmap_export() to be used
when one wants to store bitmaps in files/logs in a portable way.

Reviewed-by: Kristian Nielsen <knielsen@knielsen-hq.org>
This commit is contained in:
Monty
2024-03-08 15:18:21 +02:00
parent 9a132d423a
commit f838b2d799
10 changed files with 202 additions and 118 deletions
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20
unittest/mysys/bitmap-t.c
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@@ -512,10 +512,14 @@ error:
my_bool test_copy(MY_BITMAP *map, uint bitsize)
{
my_bitmap_map buff[16];
MY_BITMAP map2;
my_bitmap_map buff[16], buff2[16], buff3[16];
MY_BITMAP map2, map3;
uint rnd_bit;
my_bitmap_init(&map2, buff, sizeof(buff)*8, FALSE);
memset((void*) buff, 0xff, sizeof(buff));
my_bitmap_init(&map3, buff2, sizeof(buff)*8, FALSE);
bitmap_set_all(&map2);
bitmap_set_all(&map3);
bitsize= MY_MIN(bitsize, map2.n_bits);
bitmap_copy(map, &map2);
@@ -524,6 +528,15 @@ my_bool test_copy(MY_BITMAP *map, uint bitsize)
diag("bitmap_copy failed on bitsize %d", bitsize);
return 1;
}
bitmap_set_prefix(&map2, rnd_bit= get_rand_bit(bitsize)+1);
bitmap_export((uchar*) buff3, &map2);
bitmap_import(&map3, (uchar*) buff3);
if (!bitmap_cmp(&map2, &map3))
{
diag("bitmap_export/bitmap_import failed on bitsize %d rnd_bit: %d",
bitsize, rnd_bit);
return 1;
}
return 0;
}
@@ -639,6 +652,7 @@ my_bool do_test(uint bitsize)
bitmap_clear_all(&map);
if (test_copy(&map,bitsize))
goto error;
bitmap_clear_all(&map);
if (test_bitmap_exists_intersection(&map, bitsize))
goto error;
return FALSE;