kc3-lang/gnulib/doc/posix-functions/popen.texi

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• Hash : 39ed3d9c
  Author :
  Date : 2025-02-10T20:35:00
  

  popen: Set gl_cv_func_popen_works to "guessing no" on OS/2.
  
  * doc/posix-functions/popen.texi: List OS/2 kLIBC case.
  * m4/popen.m4 (gl_FUNC_POPEN): Set gl_cv_func_popen_works to
  "guessing no" on OS/2.
  
  Copyright-paperwork-exempt: Yes
  

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• doc/posix-functions/popen.texi

• @node popen
  @subsection @code{popen}
  @findex popen
  
  POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/popen.html}
  
  Gnulib module: popen
  @mindex popen
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  This function is missing on some platforms:
  MSVC 14.
  @item
  Some platforms start the child with closed stdin or stdout if the
  standard descriptors were closed in the parent:
  Cygwin 1.5.x.
  @item
  This function hangs if called with closed stdin or stdout on some platforms:
  OS/2 kLIBC.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  On native Windows platforms, this functions terminates the current process
  with exit code 127 if the environment variable @code{COMSPEC} is not set.
  @item
  Some platforms mistakenly set the close-on-exec bit, then if it is
  cleared by the application, the platform then leaks file descriptors
  from earlier @code{popen} calls into subsequent @code{popen} children:
  Cygwin 1.5.x.
  @end itemize
  

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