diff options
Diffstat (limited to 'gcc/fortran/resolve.c')
| -rw-r--r-- | gcc/fortran/resolve.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/gcc/fortran/resolve.c b/gcc/fortran/resolve.c index 0690dca..33ef748 100644 --- a/gcc/fortran/resolve.c +++ b/gcc/fortran/resolve.c @@ -6632,6 +6632,7 @@ resolve_equivalence_derived (gfc_symbol *derived, gfc_symbol *sym, gfc_expr *e) the preceding objects. A substring shall not have length zero. A derived type shall not have components with default initialization nor shall two objects of an equivalence group be initialized. + Either all or none of the objects shall have an protected attribute. The simple constraints are done in symbol.c(check_conflict) and the rest are implemented here. */ @@ -6646,7 +6647,7 @@ resolve_equivalence (gfc_equiv *eq) locus *last_where = NULL; seq_type eq_type, last_eq_type; gfc_typespec *last_ts; - int object; + int object, cnt_protected; const char *value_name; const char *msg; @@ -6655,6 +6656,8 @@ resolve_equivalence (gfc_equiv *eq) first_sym = eq->expr->symtree->n.sym; + cnt_protected = 0; + for (object = 1; eq; eq = eq->eq, object++) { e = eq->expr; @@ -6726,6 +6729,17 @@ resolve_equivalence (gfc_equiv *eq) sym = e->symtree->n.sym; + if (sym->attr.protected) + cnt_protected++; + if (cnt_protected > 0 && cnt_protected != object) + { + gfc_error ("Either all or none of the objects in the " + "EQUIVALENCE set at %L shall have the " + "PROTECTED attribute", + &e->where); + break; + } + /* An equivalence statement cannot have more than one initialized object. */ if (sym->value) |