.\" @DEPRECATED
.\" @EXECL_LIKE
.\" @IGNORABLE
+.\" @MUST_CHECK
.\" @NORETURN
.\" @PRINTF_LIKE
.\" @SCANF_LIKE
.BI "DEPRECATED(" msg ")"
.BI "EXECL_LIKE(" ntrail ")"
.BI "IGNORABLE"
+.BI "MUST_CHECK"
.BI "NORETURN"
.BI "PRINTF_LIKE(" fmt-index ", " arg-index ")"
.BI "SCANF_LIKE(" fmt-index ", " arg-index ")"
definition unused.
.PP
A function marked as
+.B MUST_CHECK
+returns an important value: a warning may be issued if a caller
+ignores the value. The return type must not be
+.BR void .
+.PP
+A function marked as
.B NORETURN
must not return. It must have return type
.BR void .