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Re: RFA: Match calls to debug_end_source_file with calls to debug_start_source_file

Jason Merrill wrote:-

> My point is that it's currently broken in simple cases, never mind
> corner cases.  Currently, C and C++ will never update input_filename
> or call debug_enter_source_file when compiling a preprocessed file.

OK, sorry your point wasn't clear from the initial mail.

Combining the 3 callbacks into one, and doing it right in that one
callback, would be the best way to fix this I think.

In the meantime (since getting rid of damned USE_CPPLIB seems to fall
ever further away) I might have a go at duplicating it in
cb_rename_file.  Or I might have a go at combining the callbacks
anyway.

Neil.
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