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clarify support for functions returning an array

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previously, tcc would accept a prototype of a function returning
an array, but not giving those functions bodies nor calling them.
it seems that gcc has never supported them, so we should probably
just error out... but it's possible that someone already using
tcc includes some header that contains an unused prototype for
one, so let's continue to support that.
This commit is contained in:
Joe Soroka 2011-03-08 14:13:08 -08:00
parent 5eb82755db
commit 31fe1cc62b
1 changed files with 8 additions and 5 deletions
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13
tccgen.c
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@ -3108,19 +3108,22 @@ static void post_type(CType *type, AttributeDef *ad)
if (l == 0)
l = FUNC_OLD;
skip(')');
t1 = type->t & VT_STORAGE;
/* NOTE: const is ignored in returned type as it has a special
meaning in gcc / C++ */
type->t &= ~(VT_STORAGE | VT_CONSTANT);
type->t &= ~VT_CONSTANT;
/* some ancient pre-K&R C allows a function to return an array
and the array brackets to be put after the arguments, such
that "int c()[]" means the same as "int[] c()" */
post_type(type, ad);
that "int c()[]" means something like "int[] c()" */
if (tok == '[') {
next();
skip(']'); /* only handle simple "[]" */
type->t |= VT_PTR;
}
/* we push a anonymous symbol which will contain the function prototype */
ad->func_args = arg_size;
s = sym_push(SYM_FIELD, type, INT_ATTR(ad), l);
s->next = first;
type->t = t1 | VT_FUNC;
type->t |= VT_FUNC;
type->ref = s;
} else if (tok == '[') {
/* array definition */