[Bug other/55410] New: [asan] bit field accesses are not instrumented

[konstantin.s.serebryany at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55410



             Bug #: 55410

           Summary: [asan] bit field accesses are not instrumented

    Classification: Unclassified

           Product: gcc

           Version: unknown

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: other

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: konstantin.s.serebry...@gmail.com

                CC: dseke...@redhat.com, dvyu...@google.com,

                    ja...@gcc.gnu.org, w...@gcc.gnu.org





[There is no rush with this, I just want this issue to be recorded]



% cat bitf.c 

typedef struct {

  int a:12;

  int b:20;

} foo;



int geta(foo *f) {

  return f->a;

}

% clang -fsanitize=address -O2 -S -o - bitf.c 2>&1 | grep __asan_report 

        callq   __asan_report_load4

% gcc -faddress-sanitizer -O2 -S -o - bitf.c 2>&1 | grep __asan_report 

%