Fortran: fix front-end GMP memleaks

gcc/fortran/ChangeLog:

	* check.cc (gfc_check_random_seed): Clear gmp variables returned by
	gfc_array_size.
	* expr.cc (gfc_check_pointer_assign): Likewise.

Author: harald-anlauf

gcc/fortran/check.cc

@@ -7155,12 +7155,16 @@ gfc_check_random_seed (gfc_expr *size, gfc_expr *put, gfc_expr *get)
       if (!kind_value_check (put, 1, gfc_default_integer_kind))
 	return false;
 
-      if (gfc_array_size (put, &put_size)
-	  && mpz_get_ui (put_size) < seed_size)
-	gfc_error ("Size of %qs argument of %qs intrinsic at %L "
-		   "too small (%i/%i)",
-		   gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic,
-		   &put->where, (int) mpz_get_ui (put_size), seed_size);
+      if (gfc_array_size (put, &put_size))
+	{
+	  if (mpz_get_ui (put_size) < seed_size)
+	    gfc_error ("Size of %qs argument of %qs intrinsic at %L "
+		       "too small (%i/%i)",
+		       gfc_current_intrinsic_arg[1]->name,
+		       gfc_current_intrinsic,
+		       &put->where, (int) mpz_get_ui (put_size), seed_size);
+	  mpz_clear (put_size);
+	}
     }
 
   if (get != NULL)
@@ -7187,12 +7191,16 @@ gfc_check_random_seed (gfc_expr *size, gfc_expr *put, gfc_expr *get)
       if (!kind_value_check (get, 2, gfc_default_integer_kind))
 	return false;
 
-       if (gfc_array_size (get, &get_size)
-	   && mpz_get_ui (get_size) < seed_size)
-	gfc_error ("Size of %qs argument of %qs intrinsic at %L "
-		   "too small (%i/%i)",
-		   gfc_current_intrinsic_arg[2]->name, gfc_current_intrinsic,
-		   &get->where, (int) mpz_get_ui (get_size), seed_size);
+       if (gfc_array_size (get, &get_size))
+	 {
+	   if (mpz_get_ui (get_size) < seed_size)
+	     gfc_error ("Size of %qs argument of %qs intrinsic at %L "
+			"too small (%i/%i)",
+			gfc_current_intrinsic_arg[2]->name,
+			gfc_current_intrinsic,
+			&get->where, (int) mpz_get_ui (get_size), seed_size);
+	   mpz_clear (get_size);
+	 }
     }
 
   /* RANDOM_SEED may not have more than one non-optional argument.  */

gcc/fortran/expr.cc

@@ -4364,16 +4364,24 @@ gfc_check_pointer_assign (gfc_expr *lvalue, gfc_expr *rvalue,
 
       /* If this can be determined, check that the target must be at least as
 	 large as the pointer assigned to it is.  */
-      if (gfc_array_size (lvalue, &lsize)
-	  && gfc_array_size (rvalue, &rsize)
-	  && mpz_cmp (rsize, lsize) < 0)
+      bool got_lsize = gfc_array_size (lvalue, &lsize);
+      bool got_rsize = got_lsize && gfc_array_size (rvalue, &rsize);
+      bool too_small = got_rsize && mpz_cmp (rsize, lsize) < 0;
+
+      if (too_small)
 	{
 	  gfc_error ("Rank remapping target is smaller than size of the"
 		     " pointer (%ld < %ld) at %L",
 		     mpz_get_si (rsize), mpz_get_si (lsize),
 		     &lvalue->where);
+	  mpz_clear (lsize);
+	  mpz_clear (rsize);
 	  return false;
 	}
+      if (got_lsize)
+	mpz_clear (lsize);
+      if (got_rsize)
+	mpz_clear (rsize);
 
       /* An assumed rank target is an experimental F202y feature.  */
       if (rvalue->rank == -1 && !(gfc_option.allow_std & GFC_STD_F202Y))