MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip

16-Bit C Compiler User’s Guide
C.3 WARNINGS
Symbols
‘/*’ within comment
A comment mark was found within a comment.
‘$’ character(s) in identifier or number
Dollar signs in identifier names are an extension to the standard.
#‘directive’ is a GCC extension
#warning, #include_next, #ident, #import, #assert and #unassert directives are GCC
extensions and are not of ISO C89.
#import is obsolete, use an #ifndef wrapper in the header file
The #import directive is obsolete. #import was used to include a file if it hadn’t already
been included. Use the #ifndef directive instead.
#include_next in primary source file
#include_next starts searching the list of header file directories after the directory in
which the current file was found. In this case, there were no previous header files so it
is starting in the primary source file.
#pragma pack (pop) encountered without matching #pragma pack (push, )
The pack(pop) pragma must be paired with a pack(push) pragma, which must precede
it in the source file.
#pragma pack (pop, identifier) encountered without matching #pragma pack
(push, identifier, )
The pack(pop) pragma must be paired with a pack(push) pragma, which must precede
it in the source file.
#warning: message
The directive #warning causes the preprocessor to issue a warning and continue
preprocessing. The tokens following #warning are used as the warning message.
A
absolute address specification ignored
Ignoring the absolute address specification for the code section in the #pragma
statement because it is not supported in the compiler. Addresses must be specified in
the linker script and code sections can be defined with the keyword __attribute__.
address of register variable ‘name’ requested
The register specifier prevents taking the address of a variable.
alignment must be a small power of two, not n
The alignment parameter of the pack pragma must be a small power of two.
anonymous enum declared inside parameter list
An anonymous enum is declared inside a function parameter list. It is usually better
programming practice to declare enums outside parameter lists, since they can never
become complete types when defined inside parameter lists.
anonymous struct declared inside parameter list
An anonymous struct is declared inside a function parameter list. It is usually better
programming practice to declare structs outside parameter lists, since they can never
become complete types when defined inside parameter lists.
DS51284H-page 182 © 2008 Microchip Technology Inc.