setusershell     1546 lib/unistd.in.h _GL_FUNCDECL_SYS (setusershell, void, (void));
setusershell     1548 lib/unistd.in.h _GL_CXXALIAS_SYS (setusershell, void, (void));
setusershell     1549 lib/unistd.in.h _GL_CXXALIASWARN (setusershell);
setusershell     1553 lib/unistd.in.h _GL_WARN_ON_USE (setusershell, "setusershell is unportable - "