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http://git.savannah.gnu.org/cgit/guile.git/commit/?id=7e8166f5bdb526c021c826943aaf050134cccc83 The branch, stable-2.0 has been updated via 7e8166f5bdb526c021c826943aaf050134cccc83 (commit) from e8f329972666db6c9d4644619473e14d54db3a80 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 7e8166f5bdb526c021c826943aaf050134cccc83 Author: Mark H Weaver <[email protected]> Date: Sun Jul 14 14:47:10 2013 -0400 Fix VM 'ash' for right shifts by large amounts. Fixes <http://bugs.gnu.org/14864>. Reported by Göran Weinholt <[email protected]>. * libguile/vm-i-scheme.c (ash): Fallback to 'scm_ash' for right shifts with counts >= SCM_I_FIXNUM_BIT, since '>>' is not guaranteed to work correctly for large counts. ----------------------------------------------------------------------- Summary of changes: libguile/vm-i-scheme.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/libguile/vm-i-scheme.c b/libguile/vm-i-scheme.c index b85d980..7402cc1 100644 --- a/libguile/vm-i-scheme.c +++ b/libguile/vm-i-scheme.c @@ -388,8 +388,12 @@ VM_DEFINE_FUNCTION (159, ash, "ash", 2) if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) { if (SCM_I_INUM (y) < 0) - /* Right shift, will be a fixnum. */ - RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) >> -SCM_I_INUM (y))); + { + /* Right shift, will be a fixnum. */ + if (SCM_I_INUM (y) > -SCM_I_FIXNUM_BIT) + RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) >> -SCM_I_INUM (y))); + /* fall through */ + } else /* Left shift. See comments in scm_ash. */ { hooks/post-receive -- GNU Guile
