[Bug sanitizer/85174] New: c-c++-common/asan/pointer-compare-1.c does not work for powerpc with sdata

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85174

            Bug ID: 85174
           Summary: c-c++-common/asan/pointer-compare-1.c does not work
                    for powerpc with sdata
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: segher at gcc dot gnu.org
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org
  Target Milestone: ---

Specifically, these two tests fail:

  /* { dg-output "ERROR: AddressSanitizer: invalid-pointer-pair.*" } */
  foo (p - 1, p);
  /* { dg-output "ERROR: AddressSanitizer: invalid-pointer-pair.*" } */
  foo (p, p - 1);

where
  char *p = &small_global[0];

and that is
  char small_global[7] = {};

Adding -mdata=none makes it all work; but should asan handle this?