Output to glibconfig.h typedefs for gintptr as the signed integer type

2008-07-28  Tor Lillqvist  <tml@novell.com>

	* configure.in: Output to glibconfig.h typedefs for gintptr as the
	signed integer type that can hold a pointer, and guintptr as the
	corresponding unsigned type. These types are portable equivalents
	to intptr_t and uintptr_t which are not available in all
	compilers.

	For all current platforms, they will presumably end up as the same
	types as gssize and gsize, but in theory size_t can be smaller
	than intptr_t. Also, the intended use case for gintptr and
	guintptr is different from that of gssize and gsize. As the name
	indicates, gintptr is for when one wants an integer type that can
	hold a pointer, and gsize is for when one wants an integer type
	that can hold the value of the sizeof operator.

svn path=/trunk/; revision=7272

diff --git a/ChangeLog b/ChangeLog
index a418b0718e40bc4556b86b04e306d5681a2eb5e7..a341f273286e95beec2d7fae5c1ef2d7e3e6641d 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2008-07-28  Tor Lillqvist  <tml@novell.com>
+
+       * configure.in: Output to glibconfig.h typedefs for gintptr as the
+       signed integer type that can hold a pointer, and guintptr as the
+       corresponding unsigned type. These types are portable equivalents
+       to intptr_t and uintptr_t which are not available in all
+       compilers.
+
+       For all current platforms, they will presumably end up as the same
+       types as gssize and gsize, but in theory size_t can be smaller
+       than intptr_t. Also, the intended use case for gintptr and
+       guintptr is different from that of gssize and gsize. As the name
+       indicates, gintptr is for when one wants an integer type that can
+       hold a pointer, and gsize is for when one wants an integer type
+       that can hold the value of the sizeof operator.
+
 2008-07-28  Matthias Clasen  <mclasen@redhat.com>
 
        Bug 544465 – gmarkup makes it hard to use pre-rolled parsers

diff --git a/configure.in b/configure.in
index ac998ab04ae46cc9f91bad9e6cafbb9b9c647ad7..0646eb8e2ce8af9fd7d368a8c89f59e0554caa75 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -2763,6 +2763,9 @@ _______EOF
 
 #define GINT_TO_POINTER(i)     ((gpointer) ${glib_gpi_cast} (i))
 #define GUINT_TO_POINTER(u)    ((gpointer) ${glib_gpui_cast} (u))
+
+typedef signed $glib_intptr_type_define gintptr;
+typedef unsigned $glib_intptr_type_define guintptr;
 _______EOF
        else
          echo '#error SIZEOF_VOID_P unknown - This should never happen' >>$outfile
@@ -3122,12 +3125,30 @@ esac
 gintbits=`expr $ac_cv_sizeof_int \* 8`
 glongbits=`expr $ac_cv_sizeof_long \* 8`
 
-
 case $ac_cv_sizeof_void_p in
-$ac_cv_sizeof_int)     glib_gpi_cast=''        glib_gpui_cast=''         ;;
-$ac_cv_sizeof_long)    glib_gpi_cast='(glong)' glib_gpui_cast='(gulong)' ;;
-$ac_cv_sizeof_long_long)glib_gpi_cast='(gint64)' glib_gpui_cast='(guint64)' ;;
-*)                     glib_unknown_void_p=yes ;;
+$ac_cv_sizeof_int)
+  glib_intptr_type_define=int
+  glib_gpi_cast=''
+  glib_gpui_cast=''
+  ;;
+$ac_cv_sizeof_long)
+  glib_intptr_type_define=long
+  glib_gpi_cast='(glong)'
+  glib_gpui_cast='(gulong)'
+  ;;
+$ac_cv_sizeof_long_long)
+  glib_intptr_type_define='long long'
+  glib_gpi_cast='(gint64)'
+  glib_gpui_cast='(guint64)'
+  ;;
+$ac_cv_sizeof___int64)
+  glib_intptr_type_define=__int64
+  glib_gpi_cast='(gint64)'
+  glib_gpui_cast='(guint64)'
+  ;;
+*)
+  glib_unknown_void_p=yes
+  ;;
 esac