src/hotspot/share/runtime/os.cpp

rev 52037 : 8211852: inspect stack during error reporting
Reviewed-by:

*** 1151,1161 ****
    if (os::find(addr, st)) {
      return;
    }
  
    if (accessible) {
!     st->print_cr(INTPTR_FORMAT " points into unknown readable memory", p2i(addr));
      return;
    }
  
    st->print_cr(INTPTR_FORMAT " is an unknown value", p2i(addr));
  }
--- 1151,1165 ----
    if (os::find(addr, st)) {
      return;
    }
  
    if (accessible) {
!     st->print(INTPTR_FORMAT " points into unknown readable memory: ", p2i(addr));
!     int bytenum = (intptr_t)addr & (sizeof(intptr_t) - 1);
!     if (bytenum != 0) { st->print("(byte %d of) ", bytenum); }
!     os::print_hex_dump(st, align_down(addr    , sizeof(intptr_t)),
!                            align_up(  addr + 1, sizeof(intptr_t)), 1);
      return;
    }
  
    st->print_cr(INTPTR_FORMAT " is an unknown value", p2i(addr));
  }