ID Number: Q45710
5.10 6.00 6.00a 6.00ax 7.00 | 5.10 6.00 6.00a
MS-DOS | OS/2
Summary:
In Microsoft C versions 5.0, 5.1, 6.0, 6.0a, 6.0ax, and C/C++ version
7.0, an attempt to link a module that has been compiled in the small
memory model with a module compiled in the medium or large memory model
produces the following error:
L2002: fixup overflow
The cause, in this particular case, of the "fixup overflow" error
message is not documented in the C version 5.1 "CodeView and
Utilities, Microsoft Editor, Mixed-Language Programming Guide" on page
366.
Normally, you should NOT link programs that contain different memory
models. All modules should be compiled using the same memory model.
(You can use the "near" and "far" keywords to produce mixed-model
programs, but this is tricky and usually doesn't give much performance
gain.)
More Information:
If the following module, MOD1.C
#include<stdio.h>
void main(void);
void main()
{
printf(" module 1 \n");
mod2();
}
is linked with the module, MOD2.C
#include<stdio.h>
void mod2(void);
void mod2()
{
printf(" module 2 \n");
}
in various memory models, the following results occur:
Memory Model Result
------------ ------
MOD1 | MOD2
------|-----
|
/AS | /AM L2002 : fixup overflow
|
/AS | /AL L2002 : fixup overflow
|
/AM | /AS Links, hangs on run
|
/AM | /AL Executes normally
|
/AL | /AS Links, hangs on run
|
/AL | /AM Links, prints trash for MOD2 on run
Additional reference words: 5.00 5.10 6.00 6.00a 6.00ax 7.00