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Overview
| Comment: | Fix a NULL pointer dereference following an OOM error in the column name resolver. (CVS 6685) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
3b46142532934d17aa136c2e56e58e78 |
| User & Date: | drh 2009-05-28 14:34:50 |
Context
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2009-05-28
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| 21:04 | Remove references to deleted function sqlite3ExprRegister(). Changes to the expr.c source module to promote better testing. (CVS 6686) check-in: 6ae4ad6e user: drh tags: trunk | |
| 14:34 | Fix a NULL pointer dereference following an OOM error in the column name resolver. (CVS 6685) check-in: 3b461425 user: drh tags: trunk | |
| 12:49 | Make sure the column name resolver does not try to duplicate Expr.u.zToken when the Expr.u.iValue union member is the element being used. (CVS 6684) check-in: 376ecf0d user: drh tags: trunk | |
Changes
Changes to src/resolve.c.
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** ************************************************************************* ** ** This file contains routines used for walking the parser tree and ** resolve all identifiers by associating them with a particular ** table and column. ** ** $Id: resolve.c,v 1.25 2009/05/28 12:49:53 drh Exp $ */ #include "sqliteInt.h" #include <stdlib.h> #include <string.h> /* ** Turn the pExpr expression into an alias for the iCol-th column of the ................................................................................ if( pDup==0 ) return; if( pEList->a[iCol].iAlias==0 ){ pEList->a[iCol].iAlias = (u16)(++pParse->nAlias); } pDup->iTable = pEList->a[iCol].iAlias; }else if( ExprHasProperty(pOrig, EP_IntValue) || pOrig->u.zToken==0 ){ pDup = sqlite3ExprDup(db, pOrig, 0); }else{ char *zToken = pOrig->u.zToken; pOrig->u.zToken = 0; pDup = sqlite3ExprDup(db, pOrig, 0); pOrig->u.zToken = zToken; if( pDup==0 ) return; if( zToken ){ |
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** ************************************************************************* ** ** This file contains routines used for walking the parser tree and ** resolve all identifiers by associating them with a particular ** table and column. ** ** $Id: resolve.c,v 1.26 2009/05/28 14:34:50 drh Exp $ */ #include "sqliteInt.h" #include <stdlib.h> #include <string.h> /* ** Turn the pExpr expression into an alias for the iCol-th column of the ................................................................................ if( pDup==0 ) return; if( pEList->a[iCol].iAlias==0 ){ pEList->a[iCol].iAlias = (u16)(++pParse->nAlias); } pDup->iTable = pEList->a[iCol].iAlias; }else if( ExprHasProperty(pOrig, EP_IntValue) || pOrig->u.zToken==0 ){ pDup = sqlite3ExprDup(db, pOrig, 0); if( pDup==0 ) return; }else{ char *zToken = pOrig->u.zToken; pOrig->u.zToken = 0; pDup = sqlite3ExprDup(db, pOrig, 0); pOrig->u.zToken = zToken; if( pDup==0 ) return; if( zToken ){ |