Added test with working work-around for #717.

src/main/fragment/cache/fragment-cache-mos6502x.asm

@@ -20361,3 +20361,94 @@ lda {c1},y
 sta {z1}
 lda #0
 sta {z1}+1
+//FRAGMENT vwsm1=vwsc1
+lda #<{c1}
+sta {m1}
+lda #>{c1}
+sta {m1}+1
+//FRAGMENT vwsm1_lt_vbsc1_then_la1
+NO_SYNTHESIS
+//FRAGMENT vwsm1_lt_vwuc1_then_la1
+lda {m1}+1
+bmi {la1}
+cmp #>{c1}
+bcc {la1}
+bne !+
+lda {m1}
+cmp #<{c1}
+bcc {la1}
+!:
+//FRAGMENT vbum1=_byte_vwsm2
+lda {m2}
+sta {m1}
+//FRAGMENT vbum1=vbum2_rol_1
+lda {m2}
+asl
+sta {m1}
+//FRAGMENT pwsc1_derefidx_vbum1=vwsm2
+ldy {m1}
+lda {m2}
+sta {c1},y
+lda {m2}+1
+sta {c1}+1,y
+//FRAGMENT vwsm1=_inc_vwsm1
+inc {m1}
+bne !+
+inc {m1}+1
+!:
+//FRAGMENT vbuaa=_byte_vwsm1
+lda {m1}
+//FRAGMENT vbuxx=_byte_vwsm1
+lda {m1}
+tax
+//FRAGMENT vbuyy=_byte_vwsm1
+lda {m1}
+tay
+//FRAGMENT vbuaa=vbum1_rol_1
+lda {m1}
+asl
+//FRAGMENT vbuxx=vbum1_rol_1
+lda {m1}
+asl
+tax
+//FRAGMENT vbuyy=vbum1_rol_1
+lda {m1}
+asl
+tay
+//FRAGMENT vbum1=vbuaa_rol_1
+asl
+sta {m1}
+//FRAGMENT vbum1=vbuxx_rol_1
+txa
+asl
+sta {m1}
+//FRAGMENT vbum1=vbuyy_rol_1
+tya
+asl
+sta {m1}
+//FRAGMENT pwsc1_derefidx_vbuaa=vwsm1
+tay
+lda {m1}
+sta {c1},y
+lda {m1}+1
+sta {c1}+1,y
+//FRAGMENT pwsc1_derefidx_vbuxx=vwsm1
+lda {m1}
+sta {c1},x
+lda {m1}+1
+sta {c1}+1,x
+//FRAGMENT pwsc1_derefidx_vbuyy=vwsm1
+lda {m1}
+sta {c1},y
+lda {m1}+1
+sta {c1}+1,y
+//FRAGMENT vbum1=vbuz2_rol_1
+lda {z2}
+asl
+sta {m1}
+//FRAGMENT pwsc1_derefidx_vbum1=vwsz2
+ldy {m1}
+lda {z2}
+sta {c1},y
+lda {z2}+1
+sta {c1}+1,y

src/test/java/dk/camelot64/kickc/test/TestProgramsFast.java

@@ -9,6 +9,11 @@ import java.io.IOException;
  */
 public class TestProgramsFast extends TestPrograms {
 
+   @Test
+   public void testStructWithHugeArray() throws IOException {
+      compileAndCompare("struct-with-huge-array.c");
+   }
+
    @Test
    public void testOldKeywords() throws IOException {
       compileAndCompare("old-keywords.c");

src/test/kc/struct-with-huge-array.c

@@ -0,0 +1,13 @@
+#pragma struct_model(classic)
+
+typedef struct {
+	unsigned char header[282];
+} bug;
+
+char * SCREEN = (char*)0x0400;
+
+void main() {
+	bug b;
+	for(unsigned int i=0;i<sizeof b;i++)
+        SCREEN[i] = b.header[i];
+}