// RUN: %clang_cc1 -fsyntax-only -verify=expected,conly -triple wasm32 -Wno-unused-value -target-feature +reference-types %s
// RUN: %clang_cc1 -x c++ -std=c++17 -fsyntax-only -verify=expected,cpp -triple wasm32 -Wno-unused-value -target-feature +reference-types %s
// Note: As WebAssembly references are sizeless types, we don't exhaustively
// test for cases covered by sizeless-1.c and similar tests.
// Unlike standard sizeless types, reftype globals are supported.
__externref_t r1;
extern __externref_t r2;
static __externref_t r3;
__externref_t *t1; // expected-error {{pointer to WebAssembly reference type is not allowed}}
__externref_t **t2; // expected-error {{pointer to WebAssembly reference type is not allowed}}
__externref_t ******t3; // expected-error {{pointer to WebAssembly reference type is not allowed}}
static __externref_t t4[3]; // expected-error {{only zero-length WebAssembly tables are currently supported}}
static __externref_t t5[]; // expected-error {{only zero-length WebAssembly tables are currently supported}}
static __externref_t t6[] = {0}; // expected-error {{only zero-length WebAssembly tables are currently supported}}
__externref_t t7[0]; // expected-error {{WebAssembly table must be static}}
static __externref_t t8[0][0]; // expected-error {{multi-dimensional arrays of WebAssembly references are not allowed}}
static __externref_t (*t9)[0]; // expected-error {{cannot form a pointer to a WebAssembly table}}
static __externref_t table[0];
static __externref_t other_table[0] = {};
static __externref_t another_table[] = {}; // expected-error {{only zero-length WebAssembly tables are currently supported}}
struct s {
__externref_t f1; // expected-error {{field has sizeless type '__externref_t'}}
__externref_t f2[0]; // expected-error {{field has sizeless type '__externref_t'}}
__externref_t f3[]; // expected-error {{field has sizeless type '__externref_t'}}
__externref_t f4[0][0]; // expected-error {{multi-dimensional arrays of WebAssembly references are not allowed}}
__externref_t *f5; // expected-error {{pointer to WebAssembly reference type is not allowed}}
__externref_t ****f6; // expected-error {{pointer to WebAssembly reference type is not allowed}}
__externref_t (*f7)[0]; // expected-error {{cannot form a pointer to a WebAssembly table}}
};
union u {
__externref_t f1; // expected-error {{field has sizeless type '__externref_t'}}
__externref_t f2[0]; // expected-error {{field has sizeless type '__externref_t'}}
__externref_t f3[]; // expected-error {{field has sizeless type '__externref_t'}}
__externref_t f4[0][0]; // expected-error {{multi-dimensional arrays of WebAssembly references are not allowed}}
__externref_t *f5; // expected-error {{pointer to WebAssembly reference type is not allowed}}
__externref_t ****f6; // expected-error {{pointer to WebAssembly reference type is not allowed}}
__externref_t (*f7)[0]; // expected-error {{cannot form a pointer to a WebAssembly table}}
};
void illegal_argument_1(__externref_t table[]); // expected-error {{cannot use WebAssembly table as a function parameter}}
void illegal_argument_2(__externref_t table[0][0]); // expected-error {{multi-dimensional arrays of WebAssembly references are not allowed}}
void illegal_argument_3(__externref_t *table); // expected-error {{pointer to WebAssembly reference type is not allowed}}
void illegal_argument_4(__externref_t ***table); // expected-error {{pointer to WebAssembly reference type is not allowed}}
void illegal_argument_5(__externref_t (*table)[0]); // expected-error {{cannot form a pointer to a WebAssembly table}}
void illegal_argument_6(__externref_t table[0]); // expected-error {{cannot use WebAssembly table as a function parameter}}
__externref_t *illegal_return_1(); // expected-error {{pointer to WebAssembly reference type is not allowed}}
__externref_t ***illegal_return_2(); // expected-error {{pointer to WebAssembly reference type is not allowed}}
__externref_t (*illegal_return_3())[0]; // expected-error {{cannot form a pointer to a WebAssembly table}}
void varargs(int, ...);
typedef void (*__funcref funcref_t)();
typedef void (*__funcref __funcref funcref_fail_t)(); // expected-warning {{attribute '__funcref' is already applied}}
__externref_t func(__externref_t ref) {
&ref; // expected-error {{cannot take address of WebAssembly reference}}
int foo = 40;
(__externref_t *)(&foo); // expected-error {{pointer to WebAssembly reference type is not allowed}}
(__externref_t ****)(&foo); // expected-error {{pointer to WebAssembly reference type is not allowed}}
sizeof(ref); // expected-error {{invalid application of 'sizeof' to sizeless type '__externref_t'}}
sizeof(__externref_t); // expected-error {{invalid application of 'sizeof' to sizeless type '__externref_t'}}
sizeof(__externref_t[0]); // expected-error {{invalid application of 'sizeof' to WebAssembly table}}
sizeof(table); // expected-error {{invalid application of 'sizeof' to WebAssembly table}}
sizeof(__externref_t[0][0]); // expected-error {{multi-dimensional arrays of WebAssembly references are not allowed}}
sizeof(__externref_t *); // expected-error {{pointer to WebAssembly reference type is not allowed}}
sizeof(__externref_t ***); // expected-error {{pointer to WebAssembly reference type is not allowed}};
// expected-warning@+1 {{'_Alignof' applied to an expression is a GNU extension}}
_Alignof(ref); // expected-error {{invalid application of 'alignof' to sizeless type '__externref_t'}}
_Alignof(__externref_t); // expected-error {{invalid application of 'alignof' to sizeless type '__externref_t'}}
_Alignof(__externref_t[]); // expected-error {{invalid application of 'alignof' to sizeless type '__externref_t'}}
_Alignof(__externref_t[0]); // expected-error {{invalid application of 'alignof' to sizeless type '__externref_t'}}
_Alignof(table); // expected-warning {{'_Alignof' applied to an expression is a GNU extension}} expected-error {{invalid application of 'alignof' to WebAssembly table}}
_Alignof(__externref_t[0][0]); // expected-error {{multi-dimensional arrays of WebAssembly references are not allowed}}
_Alignof(__externref_t *); // expected-error {{pointer to WebAssembly reference type is not allowed}}
_Alignof(__externref_t ***); // expected-error {{pointer to WebAssembly reference type is not allowed}};
varargs(1, ref); // expected-error {{cannot pass expression of type '__externref_t' to variadic function}}
__externref_t lt1[0]; // expected-error {{WebAssembly table cannot be declared within a function}}
static __externref_t lt2[0]; // expected-error {{WebAssembly table cannot be declared within a function}}
static __externref_t lt3[0][0]; // expected-error {{multi-dimensional arrays of WebAssembly references are not allowed}}
static __externref_t(*lt4)[0]; // expected-error {{cannot form a pointer to a WebAssembly table}}
// conly-error@+2 {{cannot use WebAssembly table as a function parameter}}
// cpp-error@+1 {{no matching function for call to 'illegal_argument_1'}}
illegal_argument_1(table);
varargs(1, table); // expected-error {{cannot use WebAssembly table as a function parameter}}
table == 1; // expected-error {{invalid operands to binary expression ('__attribute__((address_space(1))) __externref_t[0]' and 'int')}}
1 >= table; // expected-error {{invalid operands to binary expression ('int' and '__attribute__((address_space(1))) __externref_t[0]')}}
table == other_table; // expected-error {{invalid operands to binary expression ('__attribute__((address_space(1))) __externref_t[0]' and '__attribute__((address_space(1))) __externref_t[0]')}}
table !=- table; // expected-error {{invalid argument type '__attribute__((address_space(1))) __externref_t *' to unary expression}}
!table; // expected-error {{invalid argument type '__attribute__((address_space(1))) __externref_t *' to unary expression}}
1 && table; // expected-error {{invalid operands to binary expression ('int' and '__attribute__((address_space(1))) __externref_t[0]')}}
table || 1; // expected-error {{invalid operands to binary expression ('__attribute__((address_space(1))) __externref_t[0]' and 'int')}}
1 ? table : table; // expected-error {{cannot use a WebAssembly table within a branch of a conditional expression}}
table ? : other_table; // expected-error {{cannot use a WebAssembly table within a branch of a conditional expression}}
(void *)table; // expected-error {{cannot cast from a WebAssembly table}}
void *u;
u = table; // expected-error {{cannot assign a WebAssembly table}}
void *v = table; // expected-error {{cannot assign a WebAssembly table}}
&table; // expected-error {{cannot form a reference to a WebAssembly table}}
(void)table;
table[0]; // expected-error {{cannot subscript a WebAssembly table}}
table[0] = ref; // expected-error {{cannot subscript a WebAssembly table}}
int i = 0; // cpp-note {{declared here}}
__externref_t oh_no_vlas[i]; // expected-error {{WebAssembly table cannot be declared within a function}} \
cpp-warning {{variable length arrays in C++ are a Clang extension}} \
cpp-note {{read of non-const variable 'i' is not allowed in a constant expression}}
return ref;
}
void foo() {
static __externref_t t[0]; // expected-error {{WebAssembly table cannot be declared within a function}}
{
static __externref_t t2[0]; // expected-error {{WebAssembly table cannot be declared within a function}}
for (;;) {
static __externref_t t3[0]; // expected-error {{WebAssembly table cannot be declared within a function}}
}
}
int i = ({
static __externref_t t4[0]; // expected-error {{WebAssembly table cannot be declared within a function}}
1;
});
}
void *ret_void_ptr() {
return table; // expected-error {{cannot return a WebAssembly table}}
}
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