| // 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}} |
| } |
