[Bug fortran/67460] New: [5/6 Regression] Spurious: f951: all warnings being treated as errors

Joost.VandeVondele at mat dot ethz.ch gcc-bugzilla@gcc.gnu.org
Sat Sep 5 10:33:00 GMT 2015


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67460

            Bug ID: 67460
           Summary: [5/6 Regression] Spurious: f951: all warnings being
                    treated as errors
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: Joost.VandeVondele at mat dot ethz.ch
  Target Milestone: ---

The testcase below leads to spurious output at compile time, even though no
warning (or error) is emitted. This started with the 5. release, 4.9 is fine.
In a large build this can trigger many times, but it does not always trigger.

> gfortran  -c -std=f2003 -Werror bug.f90
f951: all warnings being treated as errors

> cat bug.f90
MODULE btree_i8_k_sp2d_v
  TYPE btree_node
     INTEGER id
     TYPE(btree_node_p), DIMENSION(:), POINTER :: subtrees
     TYPE(btree_node), POINTER :: parent
  END TYPE btree_node
  TYPE btree_node_p
     TYPE(btree_node), POINTER :: node
  END TYPE btree_node_p
CONTAINS
  RECURSIVE SUBROUTINE btree_verify_node (tree, node, level, nids, lastv,&
               count, num_nodes, max_leaf_level, min_leaf_level, printing)
    TYPE(btree_node), INTENT(IN)             :: node
    INTEGER                                  :: branch
    IF (ASSOCIATED (node%subtrees(branch)%node)) THEN
       IF (node%subtrees(branch)%node%parent%id .NE. node%id) THEN
          WRITE(*,*)'foo'
       ENDIF
    ENDIF
  END SUBROUTINE btree_verify_node
END MODULE btree_i8_k_sp2d_v



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