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Remove unreachable code. Fix a shift UB problem introduced yesterday

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and discovered by OSSFuzz.

FossilOrigin-Name: 078dbff04a95a001bbd8690ab08038fbb5506899df8290991b53fd1122a4c30c
This commit is contained in:
drh
2021-02-05 17:34:47 +00:00
parent 70bd2124ed
commit 29f6a365cc
6 changed files with 16 additions and 21 deletions
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7
src/auth.c
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@@ -143,7 +143,6 @@ void sqlite3AuthRead(
Schema *pSchema, /* The schema of the expression */
SrcList *pTabList /* All table that pExpr might refer to */
){
sqlite3 *db = pParse->db;
Table *pTab = 0; /* The table being read */
const char *zCol; /* Name of the column of the table */
int iSrc; /* Index in pTabList->a[] of table being read */
@@ -151,8 +150,8 @@ void sqlite3AuthRead(
int iCol; /* Index of column in table */
assert( pExpr->op==TK_COLUMN || pExpr->op==TK_TRIGGER );
assert( !IN_RENAME_OBJECT || db->xAuth==0 );
if( db->xAuth==0 ) return;
assert( !IN_RENAME_OBJECT );
assert( pParse->db->xAuth!=0 );
iDb = sqlite3SchemaToIndex(pParse->db, pSchema);
if( iDb<0 ){
/* An attempt to read a column out of a subquery or other
@@ -183,7 +182,7 @@ void sqlite3AuthRead(
}else{
zCol = "ROWID";
}
assert( iDb>=0 && iDb<db->nDb );
assert( iDb>=0 && iDb<pParse->db->nDb );
if( SQLITE_IGNORE==sqlite3AuthReadCol(pParse, pTab->zName, zCol, iDb) ){
pExpr->op = TK_NULL;
}