[PATCH] fix spurious warnings from AC_CHECK_SIZEOF

[Ben Pfaff]

With -Wall, AC_CHECK_SIZEOF would give a spurious warning about a
problem with cross-compilation.  The cause was a failure of
_AC_COMPUTE_INT_RUN to provide a cross-compilation fallback.
Because the cross-compilation fallback was handled properly by a
higher level, the warning was spurious.  Here is a patch that
adds a never-used fallback to AC_RUN_IFELSE, suppressing the
warning:

--- pristine/autoconf-2.59/lib/autoconf/general.m4      2003-10-27 
03:10:56.000000000 -0800
+++ autoconf-2.59/lib/autoconf/general.m4       2004-01-19 17:05:15.000000000 
-0800
@@ -2508,7 +2508,8 @@
 # Store the evaluation of the integer EXPRESSION in VARIABLE.
 m4_define([_AC_COMPUTE_INT_RUN],
 [AC_RUN_IFELSE([AC_LANG_INT_SAVE([$3], [$1])],
-              [$2=`cat conftest.val`], [$4])])
+              [$2=`cat conftest.val`], [$4],
+              [AC_MSG_ERROR([internal error: not reached in cross-compile])])])
 
 
 # _AC_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS)

This is Debian bug #228298.
-- 
"To the engineer, the world is a toy box full of sub-optimized and
 feature-poor toys."
--Scott Adams