From: Joe Neeman <joeneeman@gmail.com>
Date: Thu, 25 Oct 2007 22:29:32 +0000 (+1000)
Subject: Fix 500.
X-Git-Tag: release/2.11.35-1~68^2
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=69ff5bb805573839c689ad9d97ef79456dc66ed5;p=lilypond.git

Fix 500.

Avoid NaN in Break_aligned_interface::calc_extent_aligned_anchor.
---

diff --git a/lily/break-alignment-interface.cc b/lily/break-alignment-interface.cc
index c40219b8d2..fb863b791d 100644
--- a/lily/break-alignment-interface.cc
+++ b/lily/break-alignment-interface.cc
@@ -334,8 +334,12 @@ Break_aligned_interface::calc_extent_aligned_anchor (SCM smob)
 {
   Grob *me = unsmob_grob (smob);
   Real alignment = robust_scm2double (me->get_property ("break-align-anchor-alignment"), 0.0);
+  Interval iv = me->extent (me, X_AXIS);
 
-  return scm_from_double (me->extent (me, X_AXIS).linear_combination (alignment));
+  if (isinf (iv[LEFT]) && isinf (iv[RIGHT])) /* avoid NaN */
+    return scm_from_double (0.0);
+
+  return scm_from_double (iv.linear_combination (alignment));
 }
 
 MAKE_SCHEME_CALLBACK (Break_aligned_interface, calc_break_visibility, 1)