.SH NAME
getresuid, getresgid \- get real, effective and saved user/group IDs
.SH SYNOPSIS
-.B #define _GNU_SOURCE
+.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
.br
.B #include <unistd.h>
.sp
.BR setresuid (2),
.BR setreuid (2),
.BR setuid (2),
-.BR credentials (7),
-.BR feature_test_macros (7)
+.BR credentials (7)