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SUBJECT:         APAR  NUMBER: PJ27392 
 
REFERENCE:  AREA:     ISO-C SUPPORT 
            SEGMENT:  CHDLDI40   - RELEASE:  TPF4  (ObjOnly) 
            SEGMENT:  CHDLOR40   - RELEASE:  TPF4  (ObjOnly) 
 
 
Pre-requisite APARs are: 
FOR SEGMENT CHDLDI40   (ObjOnly)   - REL TPF4 
 PJ25084  PJ25632  PJ25807  PJ26575  
 
FOR SEGMENT CHDLOR40   (ObjOnly)   - REL TPF4 
 PJ25084  PJ26575  
To be applied in the order listed for each segment. 

ABSTRACT OF PROBLEM 
___________________ 
CTL-4 occurs when a long DLL function or variable name not found 
 

COMMENTS ON PROBLEM 
___________________ 
A  CTL-4  occurs  when a very long DLL function name or variable 
name is not found in the DLL.  When this condition  occurs,  the 
name  is  moved into a buffer in an output message and a message 
and SNAPC should occur. 
  However, when the name is too large  to  fit  into  the  space 
allocated for the name in the message, the move overlays storage 
beyond the buffer and corrupts the stack.  The corruption of the 
stack causes the CTL-4. 
 

SOLUTION 
________ 
Modified  code to check the length of DLL function name or vari- 
able name.  If the name is less than 128 characters, the  output 
buffer  contains  the complete name.  If the name is 128 charac- 
ters or greater, the output buffer contains the  truncated  name 
followed  by  a  blank and an asterisk.   The stack is no longer 
corrupted, and a  CTL-4  does  not  occur.  Instead,  an  output 
message occurs and a SNAPC occurs, as per the original design. 
 
DEPENDENCIES 
____________ 
 
Related Segments Affected By This APAR. 
_______________________________________ 
 
Segments to be assembled or compiled: 
 
Segments to be link edited: 
CISO40 
 
Load Modules to be loaded: 
CISO40 
 
Migration Considerations 
======================== 
None 
No - original messages are not changed. The message may contain a 
truncated DLL function name or variable name, but the message format 
does not change. 
 
 
BUILD/TEST INSTRUCTIONS 
_______________________ 
 
 ===BUILD Instructions=== 
 
No special build instructions. 
 
Stubs to be built: 
 
None 
 
 ===TEST Instructions=== 
 
No special test instructions. 
 
-- END APAR PJ27392 
 
 
 



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