[Bug c/93240] New: [frontend] 'align_value' attribute not honored to variables in types

[lebedev.ri at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93240

            Bug ID: 93240
           Summary: [frontend] 'align_value' attribute not honored to
                    variables in types
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: lebedev.ri at gmail dot com
  Target Milestone: ---

https://godbolt.org/z/-ExpDY

typedef double * aligned_double_ptr __attribute__((align_value(64)));

struct S {
    aligned_double_ptr y;
};

void foo(S*s){
    s->y[0] = 0;
}


<source>:1:68: warning: 'align_value' attribute directive ignored
[-Wattributes]
    1 | typedef double * aligned_double_ptr __attribute__((align_value(64)));
      |                                                                    ^
Compiler returned: 0


With clang that correctly results in alignment being lowered and used
as alignment for the store: https://godbolt.org/z/SybzgM