https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106157

--- Comment #1 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Silly question...

In the lto1 that ICEs, we have the following in
a.ltrans0.ltrans.094t.fixup_cfg3 (i.e. before DOM even comes into the picture):

  // Local variable
  struct VideoFrame videoFrame;
...
...
...
  <bb 2> [local count: 1073741824]:
  _5 = MEM[(struct VideoThumbnailer *)this_1(D)].m_MaintainAspectRatio;
  _6 = (int) _5;
  _7 = MEM[(struct VideoThumbnailer *)this_1(D)].m_ThumbnailSize;
  _12 = &MEM[(struct VideoFrame &)&videoFrame].frameData;
  __pos_13 = MEM[(struct vector *)&videoFrame + 8B].D.4741._M_impl._M_start;
  _14 = MEM[(struct vector *)&videoFrame + 8B].D.4741._M_impl._M_finish;
  if (__pos_13 != _14)
    goto <bb 3>; [70.00%]
  else
    goto <bb 4>; [30.00%]

Aren't we reading from videoFrame before it's set?

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