re PR fortran/32147 (Module file change due to order of writting out changes)

fortran/
PR fortran/32147
* module.c (write_symbol): Fix whitespace.
(write_symbol0): Walk symtree from left-to-right instead
breadth-first.
(write_symbol1): Similarly change walk of pointer info tree.
(write_module): Insert linebreak.
* symbol.c (gfc_traverse_symtree): Change to left-to-right order.
(traverse_ns): Likewise.

testsuite/
PR fortran/32147
* gfortran.dg/module_md5_1.f90: Update hash-value.

From-SVN: r129701

gcc/fortran/ChangeLog

+2007-10-28  Tobias Schlter  <tobi@gcc.gnu.org>
+
+	PR fortran/32147
+	* module.c (write_symbol): Fix whitespace.
+	(write_symbol0): Walk symtree from left-to-right instead
+	breadth-first.
+	(write_symbol1): Similarly change walk of pointer info tree.
+	(write_module): Insert linebreak.
+	* symbol.c (gfc_traverse_symtree): Change to left-to-right order.
+	(traverse_ns): Likewise.
+
 2007-10-27 Jerry DeLisle <jvdelisle@gcc.gnu.org>
 
 	PR fortran/31306

gcc/fortran/module.c

@@ -3880,7 +3880,7 @@ write_equiv (void)
 static void
 write_symbol (int n, gfc_symbol *sym)
 {
-   const char *label;
+  const char *label;
 
   if (sym->attr.flavor == FL_UNKNOWN || sym->attr.flavor == FL_LABEL)
     gfc_internal_error ("write_symbol(): bad module symbol '%s'", sym->name);
@@ -3913,12 +3913,12 @@ write_symbol0 (gfc_symtree *st)
 {
   gfc_symbol *sym;
   pointer_info *p;
+  bool dont_write = false;
 
   if (st == NULL)
     return;
 
   write_symbol0 (st->left);
-  write_symbol0 (st->right);
 
   sym = st->n.sym;
   if (sym->module == NULL)
@@ -3926,20 +3926,25 @@ write_symbol0 (gfc_symtree *st)
 
   if (sym->attr.flavor == FL_PROCEDURE && sym->attr.generic
       && !sym->attr.subroutine && !sym->attr.function)
-    return;
+    dont_write = true;
 
   if (!gfc_check_access (sym->attr.access, sym->ns->default_access))
-    return;
+    dont_write = true;
 
-  p = get_pointer (sym);
-  if (p->type == P_UNKNOWN)
-    p->type = P_SYMBOL;
+  if (!dont_write)
+    {
+      p = get_pointer (sym);
+      if (p->type == P_UNKNOWN)
+	p->type = P_SYMBOL;
 
-  if (p->u.wsym.state == WRITTEN)
-    return;
+      if (p->u.wsym.state != WRITTEN)
+	{
+	  write_symbol (p->integer, sym);
+	  p->u.wsym.state = WRITTEN;
+	}
+    }
 
-  write_symbol (p->integer, sym);
-  p->u.wsym.state = WRITTEN;
+  write_symbol0 (st->right);
 }
 
 
@@ -3953,22 +3958,22 @@ write_symbol0 (gfc_symtree *st)
 static int
 write_symbol1 (pointer_info *p)
 {
+  int result;
 
-  if (p == NULL)
+  if (!p)
     return 0;
 
-  if (write_symbol1 (p->left))
-    return 1;
-  if (write_symbol1 (p->right))
-    return 1;
+  result = write_symbol1 (p->left);
 
-  if (p->type != P_SYMBOL || p->u.wsym.state != NEEDS_WRITE)
-    return 0;
-
-  p->u.wsym.state = WRITTEN;
-  write_symbol (p->integer, p->u.wsym.sym);
+  if (!(p->type != P_SYMBOL || p->u.wsym.state != NEEDS_WRITE))
+    {
+      p->u.wsym.state = WRITTEN;
+      write_symbol (p->integer, p->u.wsym.sym);
+      result = 1;
+    }
 
-  return 1;
+  result |= write_symbol1 (p->right);
+  return result;
 }
 
 
@@ -4103,7 +4108,8 @@ write_module (void)
   mio_lparen ();
 
   write_symbol0 (gfc_current_ns->sym_root);
-  while (write_symbol1 (pi_root));
+  while (write_symbol1 (pi_root))
+    /* Nothing.  */;
 
   mio_rparen ();
 

gcc/fortran/symbol.c

@@ -2927,13 +2927,12 @@ clear_sym_mark (gfc_symtree *st)
 void
 gfc_traverse_symtree (gfc_symtree *st, void (*func) (gfc_symtree *))
 {
-  if (st != NULL)
-    {
-      (*func) (st);
+  if (!st)
+    return;
 
-      gfc_traverse_symtree (st->left, func);
-      gfc_traverse_symtree (st->right, func);
-    }
+  gfc_traverse_symtree (st->left, func);
+  (*func) (st);
+  gfc_traverse_symtree (st->right, func);
 }
 
 
@@ -2946,11 +2945,12 @@ traverse_ns (gfc_symtree *st, void (*func) (gfc_symbol *))
   if (st == NULL)
     return;
 
+  traverse_ns (st->left, func);
+
   if (st->n.sym->mark == 0)
     (*func) (st->n.sym);
   st->n.sym->mark = 1;
 
-  traverse_ns (st->left, func);
   traverse_ns (st->right, func);
 }
 

gcc/testsuite/ChangeLog

+2007-10-28  Tobias Schlter  <tobi@gcc.gnu.org>
+
+	PR fortran/32147
+	* gfortran.dg/module_md5_1.f90: Update hash-value.
+
 2007-10-28  Andrew Pinski  <pinskia@gmail.com>
 
 	PR tree-opt/33589

gcc/testsuite/gfortran.dg/module_md5_1.f90

@@ -10,5 +10,5 @@ program test
   use foo
   print *, pi
 end program test
-! { dg-final { scan-module "foo" "MD5:22d65c2e261759ab63cb7db9d0a8882b" } }
+! { dg-final { scan-module "foo" "MD5:2350094d1d87eb25ab22af5f8e96e011" } }
 ! { dg-final { cleanup-modules "foo" } }