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Avoid harmless integer overflow in pager status statistics gathering.

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Response to [forum:/forumpost/7f4cdf23f9|forum post 7f4cdf23f9].

FossilOrigin-Name: 206d8c650d937bc700946c40a82a62ea6bc4a80e5f3fb42d0ae2968de25f0644
This commit is contained in:
drh
2023-12-20 11:34:17 +00:00
parent 3262ca83a7
commit 95cf95841c
5 changed files with 17 additions and 17 deletions
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10
src/pager.c
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@@ -688,7 +688,7 @@ struct Pager {
char *zJournal; /* Name of the journal file */
int (*xBusyHandler)(void*); /* Function to call when busy */
void *pBusyHandlerArg; /* Context argument for xBusyHandler */
int aStat[4]; /* Total cache hits, misses, writes, spills */
u32 aStat[4]; /* Total cache hits, misses, writes, spills */
#ifdef SQLITE_TEST
int nRead; /* Database pages read */
#endif
@@ -6832,11 +6832,11 @@ int *sqlite3PagerStats(Pager *pPager){
a[3] = pPager->eState==PAGER_OPEN ? -1 : (int) pPager->dbSize;
a[4] = pPager->eState;
a[5] = pPager->errCode;
a[6] = pPager->aStat[PAGER_STAT_HIT];
a[7] = pPager->aStat[PAGER_STAT_MISS];
a[6] = (int)pPager->aStat[PAGER_STAT_HIT] & 0x7fffffff;
a[7] = (int)pPager->aStat[PAGER_STAT_MISS] & 0x7fffffff;
a[8] = 0; /* Used to be pPager->nOvfl */
a[9] = pPager->nRead;
a[10] = pPager->aStat[PAGER_STAT_WRITE];
a[10] = (int)pPager->aStat[PAGER_STAT_WRITE] & 0x7fffffff;
return a;
}
#endif
@@ -6852,7 +6852,7 @@ int *sqlite3PagerStats(Pager *pPager){
** reset parameter is non-zero, the cache hit or miss count is zeroed before
** returning.
*/
void sqlite3PagerCacheStat(Pager *pPager, int eStat, int reset, int *pnVal){
void sqlite3PagerCacheStat(Pager *pPager, int eStat, int reset, u64 *pnVal){
assert( eStat==SQLITE_DBSTATUS_CACHE_HIT
|| eStat==SQLITE_DBSTATUS_CACHE_MISS