===================================================================
@@ -25,6 +25,7 @@
#include "gfortran.h"
#include "match.h"
#include "parse.h"
+#include "constructor.h"
gfc_st_label
format_asterisk = {0, NULL, NULL, -1, ST_LABEL_FORMAT, ST_LABEL_FORMAT, NULL,
@@ -1606,7 +1607,7 @@
/* Resolution of the FORMAT tag, to be called from resolve_tag. */
static bool
-resolve_tag_format (const gfc_expr *e)
+resolve_tag_format (gfc_expr *e)
{
if (e->expr_type == EXPR_CONSTANT
&& (e->ts.type != BT_CHARACTER
@@ -1617,6 +1618,47 @@
return false;
}
+ /* Concatenate a constant character array into a single character
+ expression. */
+
+ if ((e->expr_type == EXPR_ARRAY || e->rank > 0)
+ && e->ts.type == BT_CHARACTER
+ && gfc_is_constant_expr (e))
+ {
+ if (e->expr_type == EXPR_VARIABLE
+ && e->symtree->n.sym->attr.flavor == FL_PARAMETER)
+ gfc_simplify_expr (e, 1);
+
+ if (e->expr_type == EXPR_ARRAY)
+ {
+ gfc_constructor *c;
+ gfc_charlen_t n, len;
+ gfc_expr *r;
+ gfc_char_t *dest, *src;
+
+ n = 0;
+ c = gfc_constructor_first (e->value.constructor);
+ len = c->expr->value.character.length;
+
+ for ( ; c; c = gfc_constructor_next (c))
+ n += len;
+
+ r = gfc_get_character_expr (e->ts.kind, &e->where, NULL, n);
+ dest = r->value.character.string;
+
+ for (c = gfc_constructor_first (e->value.constructor);
+ c; c = gfc_constructor_next (c))
+ {
+ src = c->expr->value.character.string;
+ for (gfc_charlen_t i = 0 ; i < len; i++)
+ *dest++ = *src++;
+ }
+
+ gfc_replace_expr (e, r);
+ return true;
+ }
+ }
+
/* If e's rank is zero and e is not an element of an array, it should be
of integer or character type. The integer variable should be
ASSIGNED. */
Hello world, the attached pach fixes the PR by creating one single big string from a parameter array. OK for trunk? Regards Thomas 2018-03-25 Thomas Koenig <tkoenig@gcc.gnu.org> PR fortran/66709 * io.c: Include constructor.h. (resolve_tag_format): For a constant character array, concatenate into a single character expression. 2018-03-25 Thomas Koenig <tkoenig@gcc.gnu.org> PR fortran/66709 * gfortran.dg/parameter_array_format.f90: New test.