[Bug c++/81668] LTO ODR warnings are not helpful

["trippels at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81668

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |trippels at gcc dot gnu.org

--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to sgunderson from comment #2)
> Running with -fno-diagnostics-show-caret does not help any:
> 
> ../include/violite.h:288:8: warning: type ‘struct st_vio’ violates the C++
> One Definition Rule [-Wodr]
> ../include/violite.h:288:0: note: a different type is defined in another
> translation unit
> ../include/violite.h:339:46: note: the first difference of corresponding
> definitions is field ‘viodelete’
> ../include/violite.h:339:0: note: a field of same name but different type is
> defined in another translation unit
> 
> It's hard for me to look at the preprocessed source code, because I don't
> know what to preprocess. Like I said, there's probably a thousand
> translation units including this .h file; how would I know which one to look
> through to find the two differing definitions?

You cannot expect anyone to debug MySQL for you. 
I don't see any bug, all relevant information is in the warnings.
It is up to you to figure out the rest.