SQL developer not showing compiler warnings

Question

I'm just testing out the new compiler warning contained in 11g related to the "when others" exception handler when it does not have a subsequent raise or raise_application_error.
in SQL plus, this works fine:
SQL> alter session set plsql_warnings='enable:all';
Session altered.
SQL>
SQL> create or replace function do_stuff
  2  return number
  3  as
  4     v_return number;
  5  begin
  6
  7     v_return := 3;
  8     return v_return;
  9
10  exception
11  when others then
12     return null;
13  end;
14  /
SP2-0806: Function created with compilation warnings
SQL> show errors;
Errors for FUNCTION DO_STUFF:
LINE/COL ERROR
1/1      PLW-05018: unit DO_STUFF omitted optional AUTHID clause; default
         value DEFINER used
11/6     PLW-06009: procedure "DO_STUFF" OTHERS handler does not end in
         RAISE or RAISE_APPLICATION_ERRORbut in SQL developer the output is:
BANNER                                                                          
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production    
PL/SQL Release 11.2.0.3.0 - Production                                          
CORE     11.2.0.3.0     Production                                                        
TNS for Linux: Version 11.2.0.3.0 - Production                                  
NLSRTL Version 11.2.0.3.0 - Production                                          
session SET altered.
FUNCTION do_stuff compiled
No Errors.Anyone experience this issue? is there some setting that makes SQL developer behave differently?

Answer 1

it must be something I'm doing wrong, above, I was running under windows 7 pointing at the version above.
I just tried it under an Enterprise Linux pointing at
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production          
PL/SQL Release 11.2.0.2.0 - Production                                          
CORE     11.2.0.2.0     Production                                                        
TNS for Linux: Version 11.2.0.2.0 - Production                                  
NLSRTL Version 11.2.0.2.0 - Production                                           and I get exactly the same script output and no compiler window....
actually...... if I go into a procedure window from the schema browser and compile it there, then I get the correct warning messages..... the problem is I mostly develop from .sql files extracted from source control rather than directly from the schema browser, I just want the sql worksheet to be able to show me the same compiler log window.....