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Uninitialized filter variables of path/[el]?clist types are now explicitly empty

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This commit is contained in:
Maria Matejka 2023-06-17 10:16:28 +02:00
parent c6494e45a6
commit b2ae515cf8
1 changed files with 19 additions and 30 deletions
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49
filter/config.Y
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@ -20,6 +20,7 @@ static inline u32 pair_a(u32 p) { return p >> 16; }
static inline u32 pair_b(u32 p) { return p & 0xFFFF; }
static struct symbol *this_function;
static enum f_type this_var_type;
static struct f_method_scope {
struct f_inst *object;
@ -225,34 +226,22 @@ f_new_lc_item(u32 f1, u32 t1, u32 f2, u32 t2, u32 f3, u32 t3)
}
static inline struct f_inst *
f_const_empty(struct f_dynamic_attr dyn)
f_const_empty(enum f_type t)
{
struct f_val empty;
switch (dyn.type) {
case EAF_TYPE_AS_PATH:
case EAF_TYPE_INT_SET:
case EAF_TYPE_EC_SET:
case EAF_TYPE_LC_SET:
empty = (struct f_val) {
.type = dyn.f_type,
switch (t) {
case T_PATH:
case T_CLIST:
case T_ECLIST:
case T_LCLIST:
return f_new_inst(FI_CONSTANT, (struct f_val) {
.type = t,
.val.ad = &null_adata,
};
break;
});
default:
cf_error("Can't empty that attribute");
return f_new_inst(FI_CONSTANT, (struct f_val) {});
}
return f_new_inst(FI_CONSTANT, empty);
}
#define f_dummy_dynattr(_type, _f_type) ((struct f_dynamic_attr) { .type = _type, .f_type = _f_type, })
#define f_const_empty_path f_const_empty(f_dummy_dynattr(EAF_TYPE_AS_PATH, T_PATH))
#define f_const_empty_clist f_const_empty(f_dummy_dynattr(EAF_TYPE_INT_SET, T_CLIST))
#define f_const_empty_eclist f_const_empty(f_dummy_dynattr(EAF_TYPE_EC_SET, T_ECLIST))
#define f_const_empty_lclist f_const_empty(f_dummy_dynattr(EAF_TYPE_LC_SET, T_LCLIST))
/*
* Remove all new lines and doubled whitespaces
* and convert all tabulators to spaces
@ -880,7 +869,7 @@ method_term:
;
method_cmd:
EMPTY { $$ = f_const_empty(FM.object->i_FI_EA_GET.da); }
EMPTY { $$ = f_const_empty(FM.object->i_FI_EA_GET.da.f_type); }
| PREPEND '(' term ')' { $$ = f_new_inst(FI_PATH_PREPEND, FM.object, $3 ); }
| ADD '(' term ')' { $$ = f_new_inst(FI_CLIST_ADD, FM.object, $3 ); }
| DELETE '(' term ')' { $$ = f_new_inst(FI_CLIST_DEL, FM.object, $3 ); }
@ -921,10 +910,10 @@ term:
$$ = $4;
}
| '+' EMPTY '+' { $$ = f_const_empty_path; }
| '-' EMPTY '-' { $$ = f_const_empty_clist; }
| '-' '-' EMPTY '-' '-' { $$ = f_const_empty_eclist; }
| '-' '-' '-' EMPTY '-' '-' '-' { $$ = f_const_empty_lclist; }
| '+' EMPTY '+' { $$ = f_const_empty(T_PATH); }
| '-' EMPTY '-' { $$ = f_const_empty(T_CLIST); }
| '-' '-' EMPTY '-' '-' { $$ = f_const_empty(T_ECLIST); }
| '-' '-' '-' EMPTY '-' '-' '-' { $$ = f_const_empty(T_LCLIST); }
| PREPEND '(' term ',' term ')' { $$ = f_new_inst(FI_PATH_PREPEND, $3, $5); }
| ADD '(' term ',' term ')' { $$ = f_new_inst(FI_CLIST_ADD, $3, $5); }
| DELETE '(' term ',' term ')' { $$ = f_new_inst(FI_CLIST_DEL, $3, $5); }
@ -955,14 +944,14 @@ print_list: /* EMPTY */ { $$ = NULL; }
;
var_init:
/* empty */ { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { }); }
/* empty */ { $$ = f_const_empty(this_var_type); }
| '=' term { $$ = $2; }
;
var:
type symbol var_init ';' {
type symbol { this_var_type = $1; } var_init ';' {
struct symbol *sym = cf_define_symbol(new_config, $2, SYM_VARIABLE | $1, offset, f_new_var(sym_->scope));
$$ = f_new_inst(FI_VAR_INIT, $3, sym);
$$ = f_new_inst(FI_VAR_INIT, $4, sym);
}
for_var: