doc/posix-functions/popen.texi

   1 @node popen
   2 @section @code{popen}
   3 @findex popen
   4
   5 POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/popen.html}
   6
   7 Gnulib module: popen
   8
   9 Portability problems fixed by Gnulib:
  10 @itemize
  11 @item
  12 Some platforms start the child with closed stdin or stdout if the
  13 standard descriptors were closed in the parent:
  14 Cygwin 1.5.x.
  15 @end itemize
  16
  17 Portability problems not fixed by Gnulib:
  18 @itemize
  19 @item
  20 Some platforms mistakenly set the close-on-exec bit, then if it is
  21 cleared by the application, the platform then leaks file descriptors
  22 from earlier @code{popen} calls into subsequent @code{popen} children:
  23 Cygwin 1.5.x.
  24 @end itemize