[Bug fortran/87394] New: gcc/fortran/decl.c:6466:16:Semantic Issue: variable 'stree' is used uninitialized whenever 'if' condition is false: -Wsometimes-uninitialized

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87394

            Bug ID: 87394
           Summary: gcc/fortran/decl.c:6466:16:Semantic Issue: variable
                    'stree' is used uninitialized whenever 'if' condition
                    is false: -Wsometimes-uninitialized
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---

Problematic code snippet:

...
      gfc_symtree *stree;
      if (case1)
        gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false);
      else if (case2)
        {
          gfc_symtree *st2;
          gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false);
          st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@");
          st2->n.sym = stree->n.sym;
          stree->n.sym->refs++;
        }
      sym->result = stree->n.sym;
...