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Prevent a virtual table from being destroyed while it is in use.

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FossilOrigin-Name: fba674c083286dabb37fed9357b67593b56ed3a5
This commit is contained in:
drh
2015-03-24 13:32:53 +00:00
parent 086723a4a8
commit a68d628291
6 changed files with 22 additions and 18 deletions
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12
src/vtab.c
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@@ -780,11 +780,15 @@ int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab){
pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zName);
if( ALWAYS(pTab!=0 && pTab->pVTable!=0) ){
VTable *p = vtabDisconnectAll(db, pTab);
assert( rc==SQLITE_OK );
VTable *p;
for(p=pTab->pVTable; p; p=p->pNext){
assert( p->pVtab );
if( p->pVtab->nRef>0 ){
return SQLITE_LOCKED;
}
}
p = vtabDisconnectAll(db, pTab);
rc = p->pMod->pModule->xDestroy(p->pVtab);
/* Remove the sqlite3_vtab* from the aVTrans[] array, if applicable */
if( rc==SQLITE_OK ){
assert( pTab->pVTable==p && p->pNext==0 );