Fix var-tracking for window register targets

[Diego Novillo]

Caught on a sparc build.

Testing on sparc.  Will commit once it finishes.


Diego.

        * var-tracking.c (vt_add_function_parameter): Adjust for VEC
        changes.

diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c
index 8c9ec48..9f5bc12 100644
--- a/gcc/var-tracking.c
+++ b/gcc/var-tracking.c
@@ -9356,13 +9356,13 @@ vt_add_function_parameter (tree parm)
       && HARD_REGISTER_P (incoming)
       && OUTGOING_REGNO (REGNO (incoming)) != REGNO (incoming))
     {
-      parm_reg_t *p
-       = VEC_safe_push (parm_reg_t, gc, windowed_parm_regs, NULL);
-      p->incoming = incoming;
+      parm_reg_t p;
+      p.incoming = incoming;
       incoming
        = gen_rtx_REG_offset (incoming, GET_MODE (incoming),
                              OUTGOING_REGNO (REGNO (incoming)), 0);
-      p->outgoing = incoming;
+      p.outgoing = incoming;
+      VEC_safe_push (parm_reg_t, gc, windowed_parm_regs, p);
     }
   else if (MEM_P (incoming)
           && REG_P (XEXP (incoming, 0))
@@ -9371,11 +9371,11 @@ vt_add_function_parameter (tree parm)
       rtx reg = XEXP (incoming, 0);
       if (OUTGOING_REGNO (REGNO (reg)) != REGNO (reg))
        {
-         parm_reg_t *p
-           = VEC_safe_push (parm_reg_t, gc, windowed_parm_regs, NULL);
-         p->incoming = reg;
+         parm_reg_t p;
+         p.incoming = reg;
          reg = gen_raw_REG (GET_MODE (reg), OUTGOING_REGNO (REGNO (reg)));
-         p->outgoing = reg;
+         p.outgoing = reg;
+         VEC_safe_push (parm_reg_t, gc, windowed_parm_regs, p);
          incoming = replace_equiv_address_nv (incoming, reg);
        }
     }