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Overview
| Comment: | Fix an uninitialized variable in CASE expression code generation. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | rowvalue |
| Files: | files | file ages | folders |
| SHA1: | c8ffae05e13033ec7425bf0f002df31f |
| User & Date: | drh 2016-08-23 17:30:55 |
Context
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2016-08-23
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| 18:30 | Fix a problem with rowvalue UPDATE when the rowvalue is not the left-most and the RHS is a multi-column subquery. check-in: e149e6b9 user: drh tags: rowvalue | |
| 17:30 | Fix an uninitialized variable in CASE expression code generation. check-in: c8ffae05 user: drh tags: rowvalue | |
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2016-08-22
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| 14:30 | Fix the vector BETWEEN operator so that it only evaluates the left-most vector expression once. Add support for vector comparisons in the CASE operator. check-in: 07e69f43 user: drh tags: rowvalue | |
Changes
Changes to src/expr.c.
3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 |
nExpr = pEList->nExpr;
endLabel = sqlite3VdbeMakeLabel(v);
if( (pX = pExpr->pLeft)!=0 ){
tempX = *pX;
testcase( pX->op==TK_COLUMN );
exprToRegister(&tempX, exprCodeVector(pParse, &tempX, ®Free1));
testcase( regFree1==0 );
opCompare.op = TK_EQ;
opCompare.pLeft = &tempX;
pTest = &opCompare;
/* Ticket b351d95f9cd5ef17e9d9dbae18f5ca8611190001:
** The value in regFree1 might get SCopy-ed into the file result.
** So make sure that the regFree1 register is not reused for other
** purposes and possibly overwritten. */
|
> |
3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 |
nExpr = pEList->nExpr;
endLabel = sqlite3VdbeMakeLabel(v);
if( (pX = pExpr->pLeft)!=0 ){
tempX = *pX;
testcase( pX->op==TK_COLUMN );
exprToRegister(&tempX, exprCodeVector(pParse, &tempX, ®Free1));
testcase( regFree1==0 );
memset(&opCompare, 0, sizeof(opCompare));
opCompare.op = TK_EQ;
opCompare.pLeft = &tempX;
pTest = &opCompare;
/* Ticket b351d95f9cd5ef17e9d9dbae18f5ca8611190001:
** The value in regFree1 might get SCopy-ed into the file result.
** So make sure that the regFree1 register is not reused for other
** purposes and possibly overwritten. */
|