[base] Fix broken emboldening at small sizes. * src/base/ftoutln.c (FT_Outline_EmboldenXY): Do not attempt to normalize zero-length vectors.
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diff --git a/ChangeLog b/ChangeLog
index c06065c..a3da505 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2013-01-23 Alexei Podtelezhnikov <apodtele@gmail.com>
+
+ [base] Fix broken emboldening at small sizes.
+
+ * src/base/ftoutln.c (FT_Outline_EmboldenXY): Do not attempt to
+ normalize zero-length vectors.
+
2013-01-25 Werner Lemberg <wl@gnu.org>
Fix Savannah bug #38167.
diff --git a/src/base/ftoutln.c b/src/base/ftoutln.c
index 72d3c5a..0efd88b 100644
--- a/src/base/ftoutln.c
+++ b/src/base/ftoutln.c
@@ -942,8 +942,11 @@
in.x = v_cur.x - v_prev.x;
in.y = v_cur.y - v_prev.y;
l_in = FT_Vector_Length( &in );
- in.x = FT_DivFix( in.x, l_in );
- in.y = FT_DivFix( in.y, l_in );
+ if ( l_in )
+ {
+ in.x = FT_DivFix( in.x, l_in );
+ in.y = FT_DivFix( in.y, l_in );
+ }
for ( n = first; n <= last; n++ )
{
@@ -956,8 +959,11 @@
out.x = v_next.x - v_cur.x;
out.y = v_next.y - v_cur.y;
l_out = FT_Vector_Length( &out );
- out.x = FT_DivFix( out.x, l_out );
- out.y = FT_DivFix( out.y, l_out );
+ if ( l_out )
+ {
+ out.x = FT_DivFix( out.x, l_out );
+ out.y = FT_DivFix( out.y, l_out );
+ }
d = FT_MulFix( in.x, out.x ) + FT_MulFix( in.y, out.y );