The run-time system error COBRT252 "Memory corruption detected (Fatal)", might occur when performing a SORT FIELDS=COPY on a file with a record format of VB, under mainframe emulation of DFSORT.
If you create a multi-threaded application that uses CBL_EXIT_PROC to perform an exit procedure when the program terminates, and an error occurs during the exit procedure, the application does not terminate with a non-zero exit code to the operating system.
On HP-UX, if a program attempts to delete a file that is already open to another user, the file status returned is 0/065 (File locked), instead of the more usual 9/029 (Attempt to delete open file). This applies to 32-bit files only: 64-bit files return the usual file status.