pat_badback       468 maint/gnulib/tests/test-regex.c   static char const pat_badback[] = "0|()0|\\1|0";
pat_badback       469 maint/gnulib/tests/test-regex.c   s = re_compile_pattern (pat_badback, sizeof pat_badback, &regex);
pat_badback       473 maint/gnulib/tests/test-regex.c     report_error ("%s: %s", pat_badback, s);