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Add new APIs that take 64-bit length parameters:

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sqlite3_malloc64(),
sqlite3_realloc64(),
sqlite3_bind_blob64(),
sqlite3_bind_texte64(),
sqlite3_result_blob64(),
and sqlite3_result_texte64().
Internal memory allocation routines also now use 64-bit unsigned length
parameters for safety.
Also add the sqlite3_msize() interface.
Fix the sqlite3_get_table() to use sqlite3_realloc64() to avoid a
integer overflow problem.

FossilOrigin-Name: 94954850cf2e1ec0b7f590c7f46cdc54c72558ce
This commit is contained in:
drh
2014-09-09 17:27:35 +00:00
parent 524a733d89
commit da4ca9d19c
10 changed files with 196 additions and 61 deletions
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10
src/table.c
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@@ -29,10 +29,10 @@
typedef struct TabResult {
char **azResult; /* Accumulated output */
char *zErrMsg; /* Error message text, if an error occurs */
int nAlloc; /* Slots allocated for azResult[] */
int nRow; /* Number of rows in the result */
int nColumn; /* Number of columns in the result */
int nData; /* Slots used in azResult[]. (nRow+1)*nColumn */
u32 nAlloc; /* Slots allocated for azResult[] */
u32 nRow; /* Number of rows in the result */
u32 nColumn; /* Number of columns in the result */
u32 nData; /* Slots used in azResult[]. (nRow+1)*nColumn */
int rc; /* Return code from sqlite3_exec() */
} TabResult;
@@ -58,7 +58,7 @@ static int sqlite3_get_table_cb(void *pArg, int nCol, char **argv, char **colv){
if( p->nData + need > p->nAlloc ){
char **azNew;
p->nAlloc = p->nAlloc*2 + need;
azNew = sqlite3_realloc( p->azResult, sizeof(char*)*p->nAlloc );
azNew = sqlite3_realloc64( p->azResult, sizeof(char*)*p->nAlloc );
if( azNew==0 ) goto malloc_failed;
p->azResult = azNew;
}