The following is a typical message format that displays the most relevant information about a warning message:
The components of this string are:
|
%W(80) |
Message text wraps after the last word before column 80. |
|
%i( ) |
Each hanging indent is indented by three columns. |
|
%?C%(%^%) |
A caret is displayed if the location of the error is different from that of the previous error. |
|
%f(%l) ++ |
The file name and line number (in brackets) is displayed, followed by ’++’. |
|
%?h%(ERROR%: WARNING%) ++: |
If the message is a hard error, ERROR is displayed. Otherwise, WARNING is displayed, followed by ’++:’. |
|
<=%g=(%n) |
The message level is displayed (preceded by ’<=’). This is followed by the message number (preceded by ’=’). |
|
%t |
The message text is displayed. |
A warning message with the above format would look like:
int i;
^
test.c (1) ++ WARNING ++: <=2=(3408) 'i' has external linkage and is being defined without any previous declaration.