5.1.1 Common C Interface Standard

This compiler conforms to the Microchip XC compiler Common C Interface (CCI) standard and can verify that C source code is compliant with CCI.

CCI is a further refinement of the C standards that attempts to standardize implementation-defined behavior and non-standard extensions across the entire MPLAB XC compiler family.

CCI can be enforced by using the -mext=cci option (see 4.6.3.3 Ext Option).