Postpone decision about "invalid vias are errors."

testdata/lefdef/invalid_via/comp_invalid_via.def

@@ -0,0 +1,16 @@
+VERSION 5.8 ;
+DIVIDERCHAR "/" ;
+BUSBITCHARS "[]" ;
+DESIGN comp_invalid_via ;
+UNITS DISTANCE MICRONS 1000 ;
+DIEAREA ( 0 0 ) ( 10000 2000 ) ;
+
+SPECIALNETS 2 ;
+    - VGND ( PIN VGND ) ( * VNB ) ( * VGND ) + USE GROUND
+      + ROUTED met1 480 + SHAPE FOLLOWPIN ( 0 1000 ) ( 2000 1000 )
+      NEW met1 0 + SHAPE STRIPE ( 2000 1000 ) via1
+      + ROUTED met2 480 + SHAPE FOLLOWPIN ( 2000 1000 ) ( 4000 1000 )
+      NEW met2 0 + SHAPE STRIPE ( 4000 1000 ) invalid_via ;
+END SPECIALNETS
+END DESIGN
+

testdata/lefdef/invalid_via/tech.lef

@@ -0,0 +1,89 @@
+
+VERSION 5.7 ;
+
+BUSBITCHARS "[]" ;
+DIVIDERCHAR "/" ;
+USEMINSPACING OBS OFF ;
+
+UNITS
+  DATABASE MICRONS 1000 ;
+END UNITS
+
+MANUFACTURINGGRID 0.005 ;
+
+LAYER met1
+  TYPE ROUTING ;
+  DIRECTION HORIZONTAL ;
+  PITCH 0.34 ;
+  OFFSET 0.17 ;
+  WIDTH 0.14 ;
+END met1
+
+LAYER via
+  TYPE CUT ;
+  WIDTH 0.15 ;
+  SPACING 0.17 ;
+END via
+
+LAYER met2
+  TYPE ROUTING ;
+  DIRECTION VERTICAL ;
+  PITCH 0.46 ;
+  OFFSET 0.23 ;
+  WIDTH 0.14 ; 
+END met2
+
+LAYER via2
+  TYPE CUT ;
+  WIDTH 0.2 ; 
+  SPACING 0.2 ;
+END via2
+
+LAYER met3
+  TYPE ROUTING ;
+  DIRECTION HORIZONTAL ;
+  PITCH 0.68 ;
+  OFFSET 0.34 ;
+  WIDTH 0.3 ; 
+END met3
+
+VIA via1 DEFAULT
+  LAYER via ;
+  RECT -0.075 -0.075 0.075 0.075 ;
+  LAYER met1 ;
+  RECT -0.16 -0.24 0.16 0.24 ;
+  LAYER met2 ;
+  RECT -0.13 -0.24 0.13 0.24 ;
+END via1
+
+VIARULE M1M2_PR GENERATE
+  LAYER met1 ;
+  ENCLOSURE 0.085 0.055 ;
+  LAYER met2 ;
+  ENCLOSURE 0.055 0.085 ;
+  LAYER via ;
+  RECT -0.075 -0.075 0.075 0.075 ;
+  SPACING 0.32 BY 0.32 ;
+END M1M2_PR
+
+VIA via2 DEFAULT
+  LAYER via2 ;
+  RECT -0.1 -0.1 0.1 0.1 ;
+  LAYER met2 ;
+  RECT -0.14 -0.24 0.14 0.24 ;
+  LAYER met3 ;
+  RECT -0.165 -0.165 0.165 0.165 ;
+END via2
+
+VIARULE M2M3_PR GENERATE
+  LAYER met2 ;
+  ENCLOSURE 0.04 0.085 ;
+  LAYER met3 ;
+  ENCLOSURE 0.065 0.065 ;
+  LAYER via2 ;
+  RECT -0.1 -0.1 0.1 0.1 ;
+  SPACING 0.4 BY 0.4 ;
+END M2M3_PR
+
+END LIBRARY
+