akr	2013-07-15 13:50:49 +0900 (Mon, 15 Jul 2013)

  New Revision: 41985

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=41985

  Log:
    * bignum.c: Add static assertions.

  Modified files:
    trunk/ChangeLog
    trunk/bignum.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 41984)
+++ ChangeLog	(revision 41985)
@@ -1,3 +1,7 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Mon Jul 15 13:46:26 2013  Tanaka Akira  <akr@f...>
+
+	* bignum.c: Add static assertions.
+
 Mon Jul 15 13:36:02 2013  Masaki Matsushita  <glass.saga@g...>
 
 	* hash.c (rb_hash_each_pair): performance improvement by using
Index: bignum.c
===================================================================
--- bignum.c	(revision 41984)
+++ bignum.c	(revision 41985)
@@ -45,6 +45,12 @@ static VALUE big_three = Qnil; https://github.com/ruby/ruby/blob/trunk/bignum.c#L45
 #endif
 
 STATIC_ASSERT(sizeof_bdigit_dbl, sizeof(BDIGIT_DBL) == SIZEOF_BDIGIT_DBL);
+STATIC_ASSERT(sizeof_bdigit_dbl_signed, sizeof(BDIGIT_DBL_SIGNED) == SIZEOF_BDIGIT_DBL);
+STATIC_ASSERT(sizeof_bdigit, SIZEOF_BDIGITS <= sizeof(BDIGIT));
+STATIC_ASSERT(sizeof_bdigit_and_dbl, SIZEOF_BDIGITS*2 <= SIZEOF_BDIGIT_DBL);
+STATIC_ASSERT(bdigit_signedness, 0 < (BDIGIT)-1);
+STATIC_ASSERT(bdigit_dbl_signedness, 0 < (BDIGIT_DBL)-1);
+STATIC_ASSERT(bdigit_dbl_signed_signedness, 0 > (BDIGIT_DBL_SIGNED)-1);
 STATIC_ASSERT(rbignum_embed_len_max, RBIGNUM_EMBED_LEN_MAX <= (RBIGNUM_EMBED_LEN_MASK >> RBIGNUM_EMBED_LEN_SHIFT));
 
 #ifdef WORDS_BIGENDIAN

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