diff options
Diffstat (limited to 'gcc/fortran/expr.cc')
| -rw-r--r-- | gcc/fortran/expr.cc | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/fortran/expr.cc b/gcc/fortran/expr.cc index 92a9ebd..bf858ea 100644 --- a/gcc/fortran/expr.cc +++ b/gcc/fortran/expr.cc @@ -1846,6 +1846,7 @@ find_inquiry_ref (gfc_expr *p, gfc_expr **newp) gfc_ref *ref; gfc_ref *inquiry = NULL; gfc_ref *inquiry_head; + gfc_ref *ref_ss = NULL; gfc_expr *tmp; tmp = gfc_copy_expr (p); @@ -1862,6 +1863,9 @@ find_inquiry_ref (gfc_expr *p, gfc_expr **newp) { inquiry = ref->next; ref->next = NULL; + if (ref->type == REF_SUBSTRING) + ref_ss = ref; + break; } } @@ -1891,6 +1895,28 @@ find_inquiry_ref (gfc_expr *p, gfc_expr **newp) if (!gfc_notify_std (GFC_STD_F2003, "LEN part_ref at %C")) goto cleanup; + /* Inquire length of substring? */ + if (ref_ss) + { + if (ref_ss->u.ss.start->expr_type == EXPR_CONSTANT + && ref_ss->u.ss.end->expr_type == EXPR_CONSTANT) + { + HOST_WIDE_INT istart, iend, length; + istart = gfc_mpz_get_hwi (ref_ss->u.ss.start->value.integer); + iend = gfc_mpz_get_hwi (ref_ss->u.ss.end->value.integer); + + if (istart <= iend) + length = iend - istart + 1; + else + length = 0; + *newp = gfc_get_int_expr (gfc_default_integer_kind, + NULL, length); + break; + } + else + goto cleanup; + } + if (tmp->ts.u.cl->length && tmp->ts.u.cl->length->expr_type == EXPR_CONSTANT) *newp = gfc_copy_expr (tmp->ts.u.cl->length); |