kc3-lang/gnulib/modules/strerror-override

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• Hash : c7487319
  Author :
  Date : 2011-06-21T08:50:51
  

  strerror_r: fix OpenBSD behavior on 0
  
  OpenBSD treats strerror_r(0,,) as a success, but with a message
  "Undefined error: 0"; while this is distinct from strerror_r(-1,,)
  returning "Unknown error: -1", it does not imply success.  Meanwhile,
  if buf is short enough for ERANGE, then we can't use strstr to look
  for "Unknown" or "Undefined" in the resulting message, like we had
  been doing for strerror().  Fix this by shifting the burden - now
  the strerror-override code guarantees that 0 will have an
  override when needed.
  
  * lib/strerror-override.c (strerror_override): Also override 0
  when needed.
  * lib/strerror-override.h (strerror_override): Likewise.
  * lib/strerror.c (strerror): Simplify, now that 0 override is done
  earlier.
  * lib/strerror_r.c (strerror_r): Likewise.
  * m4/strerror.m4 (gl_FUNC_STRERROR): Split detection of 0
  behavior...
  (gl_FUNC_STRERROR_0): ...into new macro.
  * m4/strerror_r.m4 (gl_FUNC_STRERROR_R): Replace strerror_r if 0
  is overridden.
  (gl_FUNC_STRERROR_R_WORKS): Avoid extra tests if 0 is broken.
  * modules/strerror-override (Files): Add strerror.m4.
  (configure.ac): Also provide override for 0 when needed.
  * doc/posix-functions/strerror.texi (strerror): Document this.
  * doc/posix-functions/perror.texi (perror): Likewise.
  
  Signed-off-by: Eric Blake <eblake@redhat.com>
  

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• modules/strerror-override

• Description:
  strerror_override() function: provide strings for gnulib-specific errno values
  
  Files:
  lib/strerror-override.h
  lib/strerror-override.c
  m4/sys_socket_h.m4
  m4/strerror.m4
  
  Depends-on:
  errno
  
  configure.ac:
  AC_REQUIRE([gl_HEADER_ERRNO_H])
  AC_REQUIRE([gl_FUNC_STRERROR_0])
  if test -n "$ERRNO_H" || test $REPLACE_STRERROR_0 = 1; then
    AC_LIBOBJ([strerror-override])
    gl_PREREQ_SYS_H_WINSOCK2
  fi
  
  Makefile.am:
  
  Include:
  "strerror-override.h"
  
  License:
  LGPLv2+
  
  Maintainer:
  all
  

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