Maximum size of arrays for C/C++ compilers

In ADS 1.1 and earlier, there is a limit of 8MB on the maximum size of objects, due to internal compiler implementation limits. If this is exceeded, the compilers will report "Error: C2429E: structure or array too large".

You should use malloc() to create large arrays instead. If you cannot use malloc(), then you can define the array as a ZI area in an assembler file using SPACE, for example:

         AREA mymem, DATA, NOINIT, ALIGN=2
array    SPACE 100000000
         END

Then declare the array in a header file like: extern int array[];

The SPACE directive reserves a zeroed block of memory. % is a synonym for SPACE.

This limit is raised to 256MB in ADS 1.2, and to 4GB in RVCT 2.x and later.