nobu	2013-09-12 22:40:06 +0900 (Thu, 12 Sep 2013)

  New Revision: 42921

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=42921

  Log:
    configure.in: size_t must be unsigned
    
    * configure.in (RUBY_CHECK_SIGNEDNESS): macro to check signedness of a
      type.
    * configure.in (size_t): must be unsigned.
      [ruby-core:57149] [Feature #8890]

  Modified files:
    trunk/ChangeLog
    trunk/configure.in
Index: configure.in
===================================================================
--- configure.in	(revision 42920)
+++ configure.in	(revision 42921)
@@ -1213,6 +1213,11 @@ elif test "x$ac_cv_type___int64" = xyes; https://github.com/ruby/ruby/blob/trunk/configure.in#L1213
     RUBY_CHECK_PRINTF_PREFIX(__int64, ll I64, LL)
 fi
 
+dnl RUBY_CHECK_SIZEOF [typename] [if-signed] [if-unsigned] [included]
+AC_DEFUN([RUBY_CHECK_SIGNEDNESS], [dnl
+    AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([AC_INCLUDES_DEFAULT([$4])], [($1)-1 > 0])],
+		      [$3], [$2])])
+
 dnl RUBY_REPLACE_TYPE [typename] [default type] [macro type] [included]
 AC_DEFUN([RUBY_REPLACE_TYPE], [dnl
     AC_CHECK_TYPE([$1],
@@ -1225,10 +1230,7 @@ AC_DEFUN([RUBY_REPLACE_TYPE], [dnl https://github.com/ruby/ruby/blob/trunk/configure.in#L1230
 	  [*" signed "*], [ ],
 	  [*" unsigned "*], [
 	    u=U],
-	  [
-	    AC_COMPILE_IFELSE(
-		[AC_LANG_BOOL_COMPILE_TRY([AC_INCLUDES_DEFAULT([$4])], [($n)-1 > 0])],
-		[u=U])])
+	  [RUBY_CHECK_SIGNEDNESS($n, [], [u=U], [$4])])
 	if test x"$t" = x; then
 	    for t in "long long" long int short; do
 		test -n "$u" && t="unsigned $t"
@@ -1514,6 +1516,8 @@ fi https://github.com/ruby/ruby/blob/trunk/configure.in#L1516
 
 
 AC_TYPE_SIZE_T
+RUBY_CHECK_SIGNEDNESS(size_t, [AC_MSG_ERROR(size_t is signed)], [],
+		      [@%:@include <sys/types.h>])
 RUBY_CHECK_SIZEOF(size_t, [int long void*], [], [@%:@include <sys/types.h>])
 RUBY_CHECK_SIZEOF(ptrdiff_t, size_t, [], [@%:@include <stddef.h>])
 RUBY_CHECK_PRINTF_PREFIX(size_t, z)
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 42920)
+++ ChangeLog	(revision 42921)
@@ -1,3 +1,11 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Thu Sep 12 22:40:03 2013  Nobuyoshi Nakada  <nobu@r...>
+
+	* configure.in (RUBY_CHECK_SIGNEDNESS): macro to check signedness of a
+	  type.
+
+	* configure.in (size_t): must be unsigned.
+	  [ruby-core:57149] [Feature #8890]
+
 Thu Sep 12 22:37:08 2013  Anton Ovchinnikov  <revolver112@g...>
 
 	* ext/bigdecimal/bigdecimal.c, ext/digest/md5/md5.c,

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