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fix prefab checking in printer

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Mishandling of a chaproned prefab when, for example, determining
whether to use quoted printing caused the `tests/compiler/zo` test to
sometimes fail.
This commit is contained in:
Matthew Flatt 2015-08-14 07:23:33 -06:00
parent e82e61e84c
commit 111a7e085d
1 changed files with 4 additions and 3 deletions
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7
racket/src/racket/src/print.c
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@ -159,7 +159,9 @@ static Scheme_Object *writable_struct_subs(Scheme_Object *s, int for_write, Prin
#define print_compact(pp, v) print_this_string(pp, &compacts[v], 0, 1)
#define PRINTABLE_STRUCT(obj, pp) (scheme_inspector_sees_part(obj, pp->inspector, -1))
#define SCHEME_PREFABP(obj) (((Scheme_Structure *)(obj))->stype->prefab_key)
#define SCHEME_PREFABP(obj) (SCHEME_CHAPERONEP(obj) \
? ((Scheme_Structure *)SCHEME_CHAPERONE_VAL(obj))->stype->prefab_key \
: ((Scheme_Structure *)(obj))->stype->prefab_key)
#define SCHEME_HASHTPx(obj) ((SCHEME_HASHTP(obj) && !(MZ_OPT_HASH_KEY(&(((Scheme_Hash_Table *)obj)->iso)) & 0x1)))
#define SCHEME_CHAPERONE_HASHTPx(obj) (SCHEME_HASHTPx(obj) \
@ -2508,8 +2510,7 @@ print(Scheme_Object *obj, int notdisplay, int compact, Scheme_Hash_Table *ht,
}
else if (SCHEME_CHAPERONE_STRUCTP(obj))
{
if (compact && (SCHEME_PREFABP(obj) || (SCHEME_CHAPERONEP(obj)
&& SCHEME_PREFABP(SCHEME_CHAPERONE_VAL(obj))))) {
if (compact && SCHEME_PREFABP(obj)) {
Scheme_Object *vec, *prefab;
print_compact(pp, CPT_PREFAB);
prefab = scheme_prefab_struct_key(obj);