diff -rN old-chicken/c-backend.scm new-chicken/c-backend.scm
702c702
< 	    [(symbol? lit) 9]		; size of symbol, and possibly a bucket
---
> 	    [(symbol? lit) 10]		; size of symbol, and possibly a bucket
diff -rN old-chicken/chicken.h new-chicken/chicken.h
359c359
< #define C_SIZEOF_SYMBOL           3
---
> #define C_SIZEOF_SYMBOL           4
diff -rN old-chicken/runtime.c new-chicken/runtime.c
1907,1908c1907,1908
<   p += 3;
<   ((C_SCHEME_BLOCK *)sym)->header = C_SYMBOL_TYPE | 2;
---
>   p += C_SIZEOF_SYMBOL;
>   ((C_SCHEME_BLOCK *)sym)->header = C_SYMBOL_TYPE | (C_SIZEOF_SYMBOL - 1);
1910a1911
>   C_set_block_item(sym, 2, C_SCHEME_UNDEFINED);
1969c1970
<     node->header = C_PAIR_TYPE | 2;
---
>     node->header = C_PAIR_TYPE | (C_SIZEOF_PAIR - 1);
2191c2192
<   *(p++) = C_PAIR_TYPE | 2;
---
>   *(p++) = C_PAIR_TYPE | (C_SIZEOF_PAIR - 1);
2205c2206
<   *(p++) = C_PAIR_TYPE | 2;
---
>   *(p++) = C_PAIR_TYPE | (C_SIZEOF_PAIR - 1);
7454c7455
<   C_word ab[ 3 ], *a = ab,
---
>   C_word ab[ C_SIZEOF_SYMBOL ], *a = ab,
7457c7458
<   *(a++) = C_SYMBOL_TYPE | 2;
---
>   *(a++) = C_SYMBOL_TYPE | (C_SIZEOF_SYMBOL - 1);
7459c7460,7461
<   *a = name;
---
>   *(a++) = name;
>   *(a++) = C_SCHEME_UNDEFINED;