[Bug rtl-optimization/66206] New: Address of stack memory associated with local variable returned to caller

[hiraditya at msn dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66206

            Bug ID: 66206
           Summary: Address of stack memory associated with local variable
                    returned to caller
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hiraditya at msn dot com
  Target Milestone: ---

Clang static analyzer reported this potential bug.
File:   gcc/bt-load.c
Location:       line 234, column 6
Description:    Address of stack memory associated with local variable 'x'
returned to caller


220     static rtx *
221     find_btr_use (rtx x, rtx *excludep = 0)
222     {
223     subrtx_ptr_iterator::array_type array;
224     FOR_EACH_SUBRTX_PTR (iter, array, &x, NONCONST)
225     {
226     rtx *loc = *iter;
227     if (loc == excludep)
228     iter.skip_subrtxes ();
229     else
230     {
231     const_rtx x = *loc;
232     if (REG_P (x)
233     && overlaps_hard_reg_set_p (all_btrs, GET_MODE (x), REGNO (x)))
234     return loc; // <-----   Address of stack memory associated with local
variable 'x' returned to caller
235     }
236     }
237     return 0;
238     }