Erroneous bit field dwarf info leading to bit overlay (or union) in debugger

[elfman2]

ccomp v3.11, v3.10, aarch64, -g3 -gdwarf-3:

typedef struct tt{
  int i1:8;
  int i2:8;
  int i3:8;
  int i4:8;
}tt;
tt t;

(gdb) p t $1 = {i1 = 0, i2 = 0, i3 = 0, i4 = 0} (gdb) set t.i1=1 (gdb) p t $2 = {i1 = 1, i2 = 1, i3 = 1, i4 = 1}