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Avoid infinite recursion when encoding struct types.

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Structures (especially hard-coded ones) can be really nasty as they can
refer to themselves. Avoid the recursion by setting the type_def field of
the type before doing the recursive encodings in the structure encoder.
This commit is contained in:
Bill Currie 2012-11-08 14:15:49 +09:00
parent 7a25283beb
commit 950a3aa83d
1 changed files with 10 additions and 6 deletions
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16
tools/qfcc/source/obj_type.c
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@ -184,6 +184,16 @@ qfo_encode_struct (type_t *type)
continue;
num_fields++;
}
size = field_offset (qfot_struct_t, fields[num_fields]);
def = qfo_new_encoding (type, size);
enc = D_POINTER (qfot_type_t, def);
strct = &enc->t.strct;
ENC_STR (strct->tag, type->name);
strct->num_fields = num_fields;
type->type_def = def; // avoid infinite recursion
if (type->meta != ty_enum) {
field_types = alloca (num_fields * sizeof (def_t *));
for (i = 0, sym = type->t.symtab->symbols; sym; sym = sym->next) {
@ -196,12 +206,6 @@ qfo_encode_struct (type_t *type)
}
}
size = field_offset (qfot_struct_t, fields[num_fields]);
def = qfo_new_encoding (type, size);
enc = D_POINTER (qfot_type_t, def);
strct = &enc->t.strct;
ENC_STR (strct->tag, type->name);
strct->num_fields = num_fields;
for (i = 0, sym = type->t.symtab->symbols; sym; sym = sym->next) {
if (sym->sy_type != sy)
continue;