Issue #404 - Do not require all fields to be listed in constructor

CHANGELOG.md

@@ -9,6 +9,7 @@ Bug Fixes
 - Properly escape question marks within strings in generated C code to avoid trigraphs.
 - Eliminate clang compiler warnings referencing `EOF` when building the runtime.
 - Fixed code so that the C compiler will no longer generate warnings regarding the string comparisons in `Cyc_st_add`. Previously this could result in these warnings being spammed to the console when compiling code using Cyclone.
+- Allow a record type to contain fields that are not initialized by the constructor.
 
 ## 0.30.0 - July 2, 2021
 

scheme/base.sld

@@ -2115,7 +2115,10 @@
                (make-record-marker)
                (quote ,name)
                (,(rename 'vector)
-                ,@make-fields))))
+                ,@make-fields ;; Pass field values sent to constructor
+                ,@(make-list ;; And include empty slots for any other fields
+                    (- (length (cddddr expr))
+                       (length make-fields))) ))))
   )))))
 
 (define-syntax define-values