1 dnl @ ../doc/m4.texi:992: Origin of test
2 dnl @ expected status: 0
4 dnl @ Copyright (C) 2006, 2007, 2008, 2009 Free Software
6 dnl @ This file is free software; the Free Software Foundation
7 dnl @ gives unlimited permission to copy and/or distribute it
8 dnl @ with or without modifications, as long as this notice
10 dnl @ expected error: ignore
12 `errprint(` skipping: syscmd does not have unix semantics
14 syscmd(`echo | cat >&- 2>/dev/null')ifelse(sysval, `0',
15 `errprint(` skipping: system does not allow closing stdout
17 changequote(`[', `]')dnl
18 syscmd([echo | ']__program__[' >&-])dnl
19 dnl @error{}m4: write error: Bad file descriptor