From 3bebb94360f1c2333feb8d504a9fa4f96984d8b7 Mon Sep 17 00:00:00 2001 From: Andreas Rottmann Date: Mon, 14 Sep 2009 12:34:37 +0200 Subject: Imported Upstream version 0.9.1.1 --- gnulib-m4/mode_t.m4 | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 gnulib-m4/mode_t.m4 (limited to 'gnulib-m4/mode_t.m4') diff --git a/gnulib-m4/mode_t.m4 b/gnulib-m4/mode_t.m4 new file mode 100644 index 00000000..a4dd694d --- /dev/null +++ b/gnulib-m4/mode_t.m4 @@ -0,0 +1,26 @@ +# mode_t.m4 serial 1 +dnl Copyright (C) 2009 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. + +# For using mode_t, it's sufficient to use AC_TYPE_MODE_T and +# include . + +# Define PROMOTED_MODE_T to the type that is the result of "default argument +# promotion" (ISO C 6.5.2.2.(6)) of the type mode_t. +AC_DEFUN([gl_PROMOTED_TYPE_MODE_T], +[ + AC_REQUIRE([AC_TYPE_MODE_T]) + AC_CACHE_CHECK([for promoted mode_t type], [gl_cv_promoted_mode_t], [ + dnl Assume mode_t promotes to 'int' if and only if it is smaller than 'int', + dnl and to itself otherwise. This assumption is not guaranteed by the ISO C + dnl standard, but we don't know of any real-world counterexamples. + AC_TRY_COMPILE([#include ], + [typedef int array[2 * (sizeof (mode_t) < sizeof (int)) - 1];], + [gl_cv_promoted_mode_t='int'], + [gl_cv_promoted_mode_t='mode_t']) + ]) + AC_DEFINE_UNQUOTED([PROMOTED_MODE_T], [$gl_cv_promoted_mode_t], + [Define to the type that is the result of default argument promotions of type mode_t.]) +]) -- cgit v1.2.3