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Fixed bug mdev-4373:

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Valgrind complained on usage of uninitialized memory.
This commit is contained in:
Igor Babaev
2013-04-06 00:51:41 -07:00
parent 1ae352afbe
commit b2d0a33ea0
4 changed files with 64 additions and 5 deletions
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12
sql/field.cc
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@@ -6202,14 +6202,16 @@ double Field_str::middle_point_pos(Field *min, Field *max)
uchar minp_prefix[sizeof(ulonglong)];
uchar maxp_prefix[sizeof(ulonglong)];
ulonglong mp, minp, maxp;
uint dsz= min(field_length, sizeof(ulonglong) * charset()->mbmaxlen);
memset(mp_prefix, 0, sizeof(ulonglong));
memset(minp_prefix, 0, sizeof(ulonglong));
memset(maxp_prefix, 0, sizeof(ulonglong));
my_strnxfrm(charset(), mp_prefix, sizeof(mp),
ptr + length_size(), sizeof(mp) * charset()->mbmaxlen);
ptr + length_size(), dsz);
my_strnxfrm(charset(), minp_prefix, sizeof(minp),
min->ptr + length_size(),
sizeof(minp) * charset()->mbmaxlen);
min->ptr + length_size(), dsz);
my_strnxfrm(charset(), maxp_prefix, sizeof(maxp),
max->ptr + length_size(),
sizeof(maxp) * charset()->mbmaxlen);
max->ptr + length_size(), dsz);
mp= char_prefix_to_ulonglong(mp_prefix);
minp= char_prefix_to_ulonglong(minp_prefix);
maxp= char_prefix_to_ulonglong(maxp_prefix);