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Overview
| Comment: | Modify the order of terms in an "if" condition to avoid implicitly comparing a dangling pointer to NULL following an OOM error. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
5372f800835da61736a64dcee8b476bb |
| User & Date: | dan 2016-01-28 18:22:46 |
Context
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2016-01-29
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| 08:38 | Avoid two more instances of pointer arithmetic on freed pointers. check-in: 2910ef64 user: dan tags: trunk | |
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2016-01-28
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| 18:22 | Modify the order of terms in an "if" condition to avoid implicitly comparing a dangling pointer to NULL following an OOM error. check-in: 5372f800 user: dan tags: trunk | |
| 08:58 | Remove a duplicate "p->magic = VDBE_MAGIC_RUN;" line from vdbeaux.c. check-in: 688eb3b4 user: dan tags: trunk | |
Changes
Changes to src/parse.y.
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 |
expr(A) ::= expr(X) NOT NULL(E). {spanUnaryPostfix(&A,pParse,TK_NOTNULL,&X,&E);}
%include {
/* A routine to convert a binary TK_IS or TK_ISNOT expression into a
** unary TK_ISNULL or TK_NOTNULL expression. */
static void binaryToUnaryIfNull(Parse *pParse, Expr *pY, Expr *pA, int op){
sqlite3 *db = pParse->db;
if( pY && pA && pY->op==TK_NULL ){
pA->op = (u8)op;
sqlite3ExprDelete(db, pA->pRight);
pA->pRight = 0;
}
}
}
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| |
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 |
expr(A) ::= expr(X) NOT NULL(E). {spanUnaryPostfix(&A,pParse,TK_NOTNULL,&X,&E);}
%include {
/* A routine to convert a binary TK_IS or TK_ISNOT expression into a
** unary TK_ISNULL or TK_NOTNULL expression. */
static void binaryToUnaryIfNull(Parse *pParse, Expr *pY, Expr *pA, int op){
sqlite3 *db = pParse->db;
if( pA && pY && pY->op==TK_NULL ){
pA->op = (u8)op;
sqlite3ExprDelete(db, pA->pRight);
pA->pRight = 0;
}
}
}
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