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Code Issues

Frontport fix for CORE-2875 - String right truncation error when char column longer than 4096 bytes is compared with string constant

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This commit is contained in:
asfernandes 2010-02-19 10:19:22 +00:00
parent 7ed350a3e9
commit 1db35d473b
1 changed files with 13 additions and 7 deletions
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20
src/jrd/intl.cpp
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@ -642,17 +642,17 @@ int INTL_compare(thread_db* tdbb, const dsc* pText1, const dsc* pText2, ErrorFun
UCHAR* p1;
USHORT t1;
USHORT length1 = CVT_get_string_ptr(pText1, &t1, &p1, NULL, 0, err);
ULONG length1 = CVT_get_string_ptr(pText1, &t1, &p1, NULL, 0, err);
UCHAR* p2;
USHORT t2;
USHORT length2 = CVT_get_string_ptr(pText2, &t2, &p2, NULL, 0, err);
ULONG length2 = CVT_get_string_ptr(pText2, &t2, &p2, NULL, 0, err);
// YYY - by SQL II compare_type must be explicit in the
// SQL statement if there is any doubt
USHORT compare_type = MAX(t1, t2); // YYY
UCHAR buffer[MAX_KEY];
HalfStaticArray<UCHAR, BUFFER_XLARGE> buffer;
if (t1 != t2)
{
@ -672,15 +672,21 @@ int INTL_compare(thread_db* tdbb, const dsc* pText1, const dsc* pText2, ErrorFun
sense if the string cannot be expressed...
*/
length2 = INTL_convert_bytes(tdbb, cs1, buffer, sizeof(buffer), cs2, p2, length2, err);
p2 = buffer;
UCHAR* p = buffer.getBuffer(INTL_convert_bytes(tdbb, cs1, NULL, 0,
cs2, p2, length2, err));
length2 = INTL_convert_bytes(tdbb, cs1, p, (ULONG) buffer.getCount(),
cs2, p2, length2, err);
p2 = p;
}
else
{
// convert pText1 to pText2's type, if possible
length1 = INTL_convert_bytes(tdbb, cs2, buffer, sizeof(buffer), cs1, p1, length1, err);
p1 = buffer;
UCHAR* p = buffer.getBuffer(INTL_convert_bytes(tdbb, cs2, NULL, 0,
cs1, p1, length1, err));
length1 = INTL_convert_bytes(tdbb, cs2, p, (ULONG) buffer.getCount(),
cs1, p1, length1, err);
p1 = p;
}
}
}