Article: Q42448
Product(s): See article
Version(s): 2.00
Operating System(s): MS-DOS
Keyword(s): ENDUSER | | mspl13_c
Last Modified: 2-MAY-1989
Problem:
When I set a far pointer to an absolute address, such as Video memory,
I get a run-time error "R6013 Illegal far pointer use".
Response:
To set pointers to an address below your program's data segment(s),
you must first disable pointer checking in Compiler Flags, which can
be accessed from Make Option under the Options menu; or use the
check_pointer pragma to turn pointer checking on and off.
QuickC 2.00 has a feature that adds code to the executable to check
for null pointer assignments and out-of-range pointers. Any attempt to
store data into a pointer that points into the program's code
segment(s) or any place before the data segment(s) produces this
run-time error. This information is documented in the "Microsoft
QuickC Tool Kit Version 2.0" manual, Section 4.3.34 /Zr (Check
Pointers), Page 104-105.