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

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• Hash : 7bad64ea
  Author :
  Date : 2011-09-24T04:07:12
  

  read: Support for MSVC 9.
  
  * lib/unistd.in.h (read): Replace also when GNULIB_UNISTD_H_NONBLOCKING
  is not 1.
  * lib/read.c (read_nothrow): New function.
  (rpl_read): Define also when GNULIB_NONBLOCKING is not 1. Use
  read_nothrow.
  * m4/read.m4 (gl_FUNC_READ): Replace read if the platform has an
  invalid parameter handler.
  (gl_PREREQ_READ): New macro.
  * modules/read (Depends-on): Add msvc-inval.
  (configure.ac): Invoke gl_PREREQ_READ.
  * doc/posix-functions/read.texi: Mention the problem on MSVC.
  

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• doc/posix-functions/read.texi

• @node read
  @section @code{read}
  @findex read
  
  POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/read.html}
  
  Gnulib module: stdio, nonblocking
  
  Portability problems fixed by Gnulib module @code{stdio}, together with module @code{nonblocking}:
  @itemize
  @item
  This function crashes when invoked with invalid arguments on some platforms:
  MSVC 9.
  @item
  When reading from a non-blocking pipe whose buffer is empty, this function
  fails with @code{errno} being set to @code{EINVAL} instead of @code{EAGAIN} on
  some platforms:
  mingw, MSVC 9.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  This function may fail with error @code{EINTR}, even in programs that don't
  install any signal handlers, on some platforms:
  MacOS X 10.5.
  @end itemize
  
  For handling @code{EINTR}, Gnulib provides a module @samp{safe-read} with a
  function @code{safe_read}.
  

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