    FIRST_STRING_P    939 libglibc/regex.c       if (FIRST_STRING_P (where))
    FIRST_STRING_P   3712 libglibc/regex.c   (FIRST_STRING_P (ptr)				\
    FIRST_STRING_P   4120 libglibc/regex.c 	      boolean same_str_p = (FIRST_STRING_P (match_end)
    FIRST_STRING_P   4570 libglibc/regex.c             dend2 = ((FIRST_STRING_P (regstart[regno])
    FIRST_STRING_P   4571 libglibc/regex.c 		      == FIRST_STRING_P (regend[regno]))