addseverity(3) Library Functions Manual addseverity(3) addseverity - (libc -lc) #include int addseverity(int severity, const char *s); glibc ( feature_test_macros(7)): addseverity(): glibc 2.19: _DEFAULT_SOURCE glibc 2.19 : _SVID_SOURCE severity fmtmsg(3). 0-4 ( ( ) HALT ERROR WARNING INFO). s severity. s (NULL) severity. . . MM_OK. MM_NOTOK. : . attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |addseverity()| | MT-Safe | +------------+------------------------------------+--------------------+ GNU. glibc 2.1. System V. SEV_LEVEL. fmtmsg(3) 3 . . : . 6.18 8 2026 addseverity(3)