Q61328: Why C 6.00 Doesn’t Contain DOS Versions of C2L and C3L

Article: Q61328
Product(s): See article
Version(s): 6.00   | 6.00
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | | mspl13_c
Last Modified: 13-JUN-1990

The alternate second and third passes of the Microsoft C version 6.00
compiler have a much larger pass size (the amount of memory taken up
in code and overhead for a pass of the compiler) than their
small-model counterparts.

This larger pass size negates any net memory gain under DOS that is
made in not restricting data to DGROUP. Because of this fact, the
alternate second and third passes of the compiler for DOS were not
shipped with the Microsoft C version 6.00 package.

The compiler message "Out of Near Heap Space" may be encountered in
pass two of the CL.EXE compiler when compiling moderate to large size
modules under DOS. The solution for this problem is to either reduce
the number of symbols in your module, reduce the size of the module,
or switch to the OS/2 operating system where there are alternate
second and third pass compilers to handle this situation.

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