A.2.17 -errwarn[=t]
Use -errwarn to cause the C++ compiler to exit with a failure status for the given warning messages.
A.2.17.1 Values
t is a comma-separated list that consists of one or more of the following: tag, no%tag, %all, %none. Order is important; for example %all,no%tag causes cc to exit with a fatal status if any warning except tag is issued.
The following table details the -errwarn values:
Table A–4 The -errwarn Values|
Value |
Meaning |
|---|---|
|
tag |
Cause CC to exit with a fatal status if the message specified by this tag is issued as a warning message. Has no effect if tag is not issued. |
|
no%tag |
Prevent CC from exiting with a fatal status if the message specified by tag is issued only as a warning message. Has no effect if the message specified by tag is not issued. Use this option to revert a warning message that was previously specified by this option with tag or %all from causing cc to exit with a fatal status when issued as a warning message. |
|
%all |
Cause CC to exit with a fatal status if any warning messages are issued. %all can be followed by no%tag to exempt specific warning messages from this behavior. |
|
%none |
Prevents any warning message from causing CC to exit with a fatal status should any warning message be issued. |
Defaults
The default is -errwarn=%none. If you specify -errwarn alone, it is equivalent to -errwarn=%all.
Warnings
Only warning messages from the C++ compiler front-end that display a tag when the -errtags option is used can be specified with the -errwarn option to cause the compiler to exit with a failure status.
The warning messages generated by the C++ compiler change from release to release as the compiler error checking improves and features are added. Code that compiles using -errwarn=%all without error may not compile without error in the next release of the compiler.
See Also
-erroff, -errtags, -xwe
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