https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118266
--- Comment #13 from H.J. Lu <hjl.tools at gmail dot com> ---
(gdb) call debug_cfi_row (cur_row)
.cfi_def_cfa 7, 80
.cfi_offset 3, -56
.cfi_offset 6, -48
.cfi_offset 12, -40
.cfi_offset 13, -32
.cfi_offset 14, -24
.cfi_offset 15, -16
.cfi_offset 16, -8
(gdb) call debug_cfi_row (ti->beg_row)
.cfi_def_cfa 7, 96
.cfi_offset 3, -56
.cfi_offset 6, -48
.cfi_offset 12, -40
.cfi_offset 13, -32
.cfi_offset 14, -24
.cfi_offset 15, -16
.cfi_offset 16, -8
(gdb)