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ffs: avoid undefined behavior * lib/ffs.c (ffs): Provide fallback for non-32-bit int. * tests/test-ffs.c (naive, main): Avoid signed shifts. Reported by Bruno Haible. Signed-off-by: Eric Blake <eblake@redhat.com>
author Eric Blake <eblake@redhat.com>
date Fri, 15 Jul 2011 14:26:43 -0600
parents 51b1cc0a0bc7
children 8250f2777afc
line wrap: on
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# fseek.m4 serial 4
dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_FUNC_FSEEK],
[
  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
  AC_REQUIRE([gl_FUNC_FSEEKO])
  dnl When fseeko needs fixes, fseek needs them too.
  if test $HAVE_FSEEKO = 0 || test $REPLACE_FSEEKO = 1; then
    REPLACE_FSEEK=1
  fi
])