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Check for incomplete types and better param/return size checking.

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This commit is contained in:
Bill Currie 2010-11-17 14:45:35 +09:00
parent a623fb53a7
commit 799d46f83d
2 changed files with 37 additions and 5 deletions
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34
tools/qfcc/source/function.c
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@ -146,10 +146,6 @@ parse_params (type_t *type, param_t *parms)
}
new.num_parms = -(new.num_parms + 1);
} else if (p->type) {
if (type_size (p->type) > type_size (&type_param)) {
error (0, "param too large to be passed by value");
return type;
}
new.parm_types[new.num_parms] = p->type;
new.num_parms++;
}
@ -350,6 +346,34 @@ find_function (expr_t *fexpr, expr_t *params)
return fexpr;
}
static void
check_function (def_t *func, param_t *params)
{
param_t *p;
int i;
if (!type_size (func->type->aux_type)) {
error (0, "return type is an incomplete type");
func->type->aux_type = &type_void;//FIXME
}
if (type_size (func->type->aux_type) > type_size (&type_param)) {
error (0, "return value too large to be passed by value");
func->type->aux_type = &type_void;//FIXME
}
for (p = params, i = 0; p; p = p->next, i++) {
if (!p->selector && !p->type && !p->name)
continue; // ellipsis marker
if (!p->type)
continue; // non-param selector
if (!type_size (p->type))
error (0, "parameter %d (‘%s’) has incomplete type",
i + 1, p->name);
if (type_size (p->type) > type_size (&type_param))
error (0, "param %d (‘%s’) is too large to be passed by value",
i + 1, p->name);
}
}
void
build_scope (function_t *f, def_t *func, param_t *params)
{
@ -359,6 +383,8 @@ build_scope (function_t *f, def_t *func, param_t *params)
def_t *args = 0;
int parm_ofs[MAX_PARMS];
check_function (func, params);
f->scope = new_scope (sc_params, new_defspace (), pr.scope);
if (func->type->num_parms < 0) {