Re: Avoid possible dereference null pointer (src/backend/catalog/pg_depend.c)

Hi.

Per Coverity.

     

2. returned_null: SearchSysCacheAttName returns NULL (checked 20 out of 21 times).

3. var_assigned: Assigning: ptup = NULL return value from SearchSysCacheAttName.

 964                ptup = SearchSysCacheAttName(relid, attname);

CID 1545986: (#1 of 1): Dereference null return value (NULL_RETURNS)

4. dereference: Dereferencing ptup, which is known to be NULL.

The functions SearchSysCacheAttNum and SearchSysCacheAttName,

need to have the result checked.

The commit 5091995, left an oversight.

Fixed by the patch attached, a change of style, unfortunately, was necessary.