MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip
MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip
MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip
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C.1 INTRODUCTION<br />
C.2 ERRORS<br />
<strong>MPLAB</strong> ® C COMPILER FOR<br />
<strong>PIC24</strong> <strong>MCUs</strong> AND <strong>dsPIC</strong> ® <strong>DSCs</strong><br />
USER’S GUIDE<br />
Appendix C. Diagnostics<br />
This appendix lists the most common diagnostic messages generated by the <strong>MPLAB</strong><br />
C <strong>Compiler</strong> <strong>for</strong> <strong>PIC24</strong> <strong>MCUs</strong> <strong>and</strong> <strong>dsPIC</strong> ® <strong>DSCs</strong> (<strong>for</strong>merly <strong>MPLAB</strong> C30).<br />
The compiler can produce two kinds of diagnostic messages: errors <strong>and</strong> warnings.<br />
Each kind has a different purpose.<br />
• Errors reports problems that make it impossible to compile your program. The<br />
compiler reports errors with the source file name <strong>and</strong> line number where the problem<br />
is apparent.<br />
• Warnings reports other unusual conditions in your code that may indicate a<br />
problem, although compilation can (<strong>and</strong> does) proceed. Warning messages also<br />
report the source file name <strong>and</strong> line number, but include the text warning: to distinguish<br />
them from error messages.<br />
Warnings may indicate danger points where you should check to make sure that your<br />
program really does what you intend; or the use of obsolete features; or the use of<br />
non-st<strong>and</strong>ard features of the compiler. Many warnings are issued only if you ask <strong>for</strong><br />
them, with one of the -W options (<strong>for</strong> instance,-Wall requests a variety of useful<br />
warnings).<br />
In rare instances, the compiler may issue an internal error message report. This<br />
signifies that the compiler itself has detected a fault that should be reported to<br />
<strong>Microchip</strong> support. Details on contacting support are contained elsewhere in this<br />
manual.<br />
Symbols<br />
\x used with no following HEX digits<br />
The escape sequence \x should be followed by hex digits.<br />
‘&’ constraint used with no register class<br />
The asm statement is invalid.<br />
‘%’ constraint used with last oper<strong>and</strong><br />
The asm statement is invalid.<br />
#elif after #else<br />
In a preprocessor conditional, the #else clause must appear after any #elif clauses.<br />
#elif without #if<br />
In a preprocessor conditional, the #if must be used be<strong>for</strong>e using the #elif.<br />
#else after #else<br />
In a preprocessor conditional, the #else clause must appear only once.<br />
#else without #if<br />
In a preprocessor conditional, the #if must be used be<strong>for</strong>e using the #else.<br />
© 2008 <strong>Microchip</strong> Technology Inc. DS51284H-page 163
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