diff options
Diffstat (limited to 'gcc/fortran/expr.c')
| -rw-r--r-- | gcc/fortran/expr.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/gcc/fortran/expr.c b/gcc/fortran/expr.c index 92ad77e..4e77605 100644 --- a/gcc/fortran/expr.c +++ b/gcc/fortran/expr.c @@ -2202,7 +2202,18 @@ check_init_expr (gfc_expr *e) if (e->symtree->n.sym->attr.flavor == FL_PARAMETER) { - t = simplify_parameter_variable (e, 0); + /* A PARAMETER shall not be used to define itself, i.e. + REAL, PARAMETER :: x = transfer(0, x) + is invalid. */ + if (!e->symtree->n.sym->value) + { + gfc_error("PARAMETER '%s' is used at %L before its definition " + "is complete", e->symtree->n.sym->name, &e->where); + t = FAILURE; + } + else + t = simplify_parameter_variable (e, 0); + break; } @@ -2233,6 +2244,12 @@ check_init_expr (gfc_expr *e) e->symtree->n.sym->name, &e->where); break; + case AS_EXPLICIT: + gfc_error ("Array '%s' at %L is a variable, which does " + "not reduce to a constant expression", + e->symtree->n.sym->name, &e->where); + break; + default: gcc_unreachable(); } |