Remove fallback for _XEatDataWords, require libX11 1.6 for it

_XEatDataWords was orignally introduced with the May 2013 security
patches, and in order to ease the process of delivering those,
fallback versions of _XEatDataWords were included in the X extension
library patches so they could be applied to older versions that didn't
have libX11 1.6 yet.   Now that we're past that hurdle, we can drop
the fallbacks and just require libX11 1.6 for building new versions
of the extension libraries.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

2 files changed, 1 insertions, 18 deletions

diff --git a/configure.ac b/configure.ac
index f68b689..b082de8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -48,13 +48,7 @@ XORG_DEFAULT_OPTIONS
 XORG_CHECK_MALLOC_ZERO
 
 # Obtain compiler/linker options for depedencies
-PKG_CHECK_MODULES(XRES, x11 xext xextproto [resourceproto >= 1.2.0])
-
-# Check for _XEatDataWords function that may be patched into older Xlib release
-SAVE_LIBS="$LIBS"
-LIBS="$XRES_LIBS"
-AC_CHECK_FUNCS([_XEatDataWords])
-LIBS="$SAVE_LIBS"
+PKG_CHECK_MODULES(XRES, [x11 >= 1.6] xext xextproto [resourceproto >= 1.2.0])
 
 AC_CONFIG_FILES([Makefile
 		src/Makefile
diff --git a/src/XRes.c b/src/XRes.c
index 89fab82..2bee277 100644
--- a/src/XRes.c
+++ b/src/XRes.c
@@ -15,17 +15,6 @@
 #include <assert.h>
 #include <limits.h>
 
-#ifndef HAVE__XEATDATAWORDS
-static inline void _XEatDataWords(Display *dpy, unsigned long n)
-{
-# ifndef LONG64
-    if (n >= (ULONG_MAX >> 2))
-        _XIOError(dpy);
-# endif
-    _XEatData (dpy, n << 2);
-}
-#endif
-
 static XExtensionInfo _xres_ext_info_data;
 static XExtensionInfo *xres_ext_info = &_xres_ext_info_data;
 static const char *xres_extension_name = XRES_NAME;