[Bug sanitizer/78663] New: [7 Regression] Hundreds of asan failures on x86_64-apple-darwin10 at r243019

["dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78663

            Bug ID: 78663
           Summary: [7 Regression] Hundreds of asan failures on
                    x86_64-apple-darwin10 at r243019
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dominiq at lps dot ens.fr
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    iains at gcc dot gnu.org, jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
  Target Milestone: ---

At r243019 I see hundreds of asan failures on x86_64-apple-darwin10 of the kind

FAIL: c-c++-common/asan/bitfield-1.c   -O0  output pattern test, is dyld:
Symbol not found: _memmem

x86_64-apple-darwin16 is OK.