From b47daf811ac057b919a12f71ac1847d16a6d464b Mon Sep 17 00:00:00 2001 From: nobu Date: Sun, 15 Jul 2007 12:07:46 +0000 Subject: * bignum.c (get2comp): do nothing for empty Bignum. [ruby-dev:31225] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@12796 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ChangeLog | 4 ++++ bignum.c | 3 ++- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/ChangeLog b/ChangeLog index e579f1ccac..0c68608d5b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +Sun Jul 15 21:07:43 2007 Nobuyoshi Nakada + + * bignum.c (get2comp): do nothing for empty Bignum. [ruby-dev:31225] + Sun Jul 15 19:05:28 2007 Nobuyoshi Nakada * bignum.c (rb_cstr_to_inum): check leading non-digits. diff --git a/bignum.c b/bignum.c index 8815a43808..fb469e1a84 100644 --- a/bignum.c +++ b/bignum.c @@ -104,7 +104,7 @@ bigtrunc(x) long len = RBIGNUM(x)->len; BDIGIT *ds = BDIGITS(x); - while (len-- && !ds[len]); + while (--len && !ds[len]); RBIGNUM(x)->len = ++len; return x; } @@ -1100,6 +1100,7 @@ rb_big_neg(x) if (!RBIGNUM(x)->sign) get2comp(z); ds = BDIGITS(z); i = RBIGNUM(x)->len; + if (!i) return INT2FIX(~(SIGNED_VALUE)0); while (i--) ds[i] = ~ds[i]; RBIGNUM(z)->sign = !RBIGNUM(z)->sign; if (RBIGNUM(x)->sign) get2comp(z); -- cgit v1.2.3