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Overview
| Comment: | Prevent a possible segfault when the sqlite3_value_numeric_type() interface is misused to try to determine the numeric type of the NULL value returned from sqlite3_column_value() with an invalid column number. |
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| SHA1: |
501b743bcb60cda0acf63bcf8a4abbf0 |
| User & Date: | drh 2010-11-18 12:31:24 |
Context
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2010-11-18
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| 13:47 | Fix compiler warnings. (check-in: 6c4f1d5c user: drh tags: trunk) | |
| 12:31 | Prevent a possible segfault when the sqlite3_value_numeric_type() interface is misused to try to determine the numeric type of the NULL value returned from sqlite3_column_value() with an invalid column number. (check-in: 501b743b user: drh tags: trunk) | |
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2010-11-17
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| 02:02 | Restrict the scope of the sqlite3_stmt_readonly() interface to a specific subset of prepared statement types. (check-in: 919b06c3 user: drh tags: trunk) | |
Changes
Changes to src/vdbe.c.
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} /* ** Try to convert the type of a function argument or a result column ** into a numeric representation. Use either INTEGER or REAL whichever ** is appropriate. But only do the conversion if it is possible without ** loss of information and return the revised type of the argument. ** ** This is an EXPERIMENTAL api and is subject to change or removal. */ int sqlite3_value_numeric_type(sqlite3_value *pVal){ Mem *pMem = (Mem*)pVal; applyNumericAffinity(pMem); sqlite3VdbeMemStoreType(pMem); return pMem->type; } /* ** Exported version of applyAffinity(). This one works on sqlite3_value*, ** not the internal Mem* type. */ |
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}
/*
** Try to convert the type of a function argument or a result column
** into a numeric representation. Use either INTEGER or REAL whichever
** is appropriate. But only do the conversion if it is possible without
** loss of information and return the revised type of the argument.
*/
int sqlite3_value_numeric_type(sqlite3_value *pVal){
Mem *pMem = (Mem*)pVal;
if( pMem->type==SQLITE_TEXT ){
applyNumericAffinity(pMem);
sqlite3VdbeMemStoreType(pMem);
}
return pMem->type;
}
/*
** Exported version of applyAffinity(). This one works on sqlite3_value*,
** not the internal Mem* type.
*/
|