B.2.15 -errwarn[=t] (Sun Studio 12: C User's Guide)

Sun Studio 12: C User's Guide

B.2.15 `-errwarn`[`=t`]

Use the -errwarn option to cause the C compiler to exit with a failure status for the given warning messages.

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 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.

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 C compiler to exit with a failure status.

The following table details the -errwarn values:

Table B–4 The -errwarn Flags


Flag	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 the compiler 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 the compiler to exit with a fatal status should any warning message be issued.

The default is -errwarn=%none. If you specify -errwarn alone, it is equivalent to -errwarn=%all.