[SystemZ] No compile time error returned for vector double _Complex type

[bahareh-farhadi]

The test expects a compile time error when a vector double _Complex variable is declared; however, no error is returned.
According to the supported vector data types listed in https://www.ibm.com/docs/en/zos/2.5.0?topic=support-vector-data-types vector double _Complex is not supported, so a compile time error is expected.

Test case:

$ cat t.c
 
double _Complex b;
 
int main()
{
    vector double _Complex a = {b};
}

Command to reproduce the actual behaviour:

$ clang -mvx -mzvector  t.c
$ echo $?
0

GCC returns a compile time error as expected:

$ gcc -mvx -mzvector t.c
t.c: In function ‘main’:
t.c:5:5: error: invalid vector type for attribute ‘vector_size’
    5 |     vector double _Complex a = {b};
      |     ^~~~~~

[llvmbot]

@llvm/issue-subscribers-clang-driver

Author: None (bahareh-farhadi)

The test expects a compile time error when a `vector double _Complex` variable is declared; however, no error is returned. According to the supported vector data types listed in [https://www.ibm.com/docs/en/zos/2.5.0?topic=support-vector-data-types](https://www.ibm.com/docs/en/zos/2.5.0?topic=support-vector-data-types) `vector double _Complex` is not supported, so a compile time error is expected.

Test case:

$ cat t.c
 
double _Complex b;
 
int main()
{
    vector double _Complex a = {b};
}

Command to reproduce the actual behaviour:

$ clang -mvx -mzvector  t.c
$ echo $?
0

GCC returns a compile time error as expected:

$ gcc -mvx -mzvector t.c
t.c: In function ‘main’:
t.c:5:5: error: invalid vector type for attribute ‘vector_size’
    5 |     vector double _Complex a = {b};
      |     ^~~~~~

[uweigand]

Confirmed. Note that this also happens for "vector float _Complex".

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: None (bahareh-farhadi)

The test expects a compile time error when a `vector double _Complex` variable is declared; however, no error is returned. According to the supported vector data types listed in [https://www.ibm.com/docs/en/zos/2.5.0?topic=support-vector-data-types](https://www.ibm.com/docs/en/zos/2.5.0?topic=support-vector-data-types) `vector double _Complex` is not supported, so a compile time error is expected.

Test case:

$ cat t.c
 
double _Complex b;
 
int main()
{
    vector double _Complex a = {b};
}

Command to reproduce the actual behaviour:

$ clang -mvx -mzvector  t.c
$ echo $?
0

GCC returns a compile time error as expected:

$ gcc -mvx -mzvector t.c
t.c: In function ‘main’:
t.c:5:5: error: invalid vector type for attribute ‘vector_size’
    5 |     vector double _Complex a = {b};
      |     ^~~~~~