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Just as a note....
The fix for this is either to start using frame_unwind_address_in_block in
i386_frame_cache, or finding a more general location to use it. Otherwise
Mark's uber new i386 prologue analyzer, analyzes the following function. Then everything loses.
I think a more general solution is in order; for frame_func_unwind to return a function based on the PC is not correct in this situation. Perhaps we should revisit the idea of a flag indicate whether the resume address is known-in-block (dummy frames, sigtramps) or maybe-just-after (normal calls).
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