https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69126
Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |manu at gcc dot gnu.org
--- Comment #13 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #3)
> For whatever reason, the DECL_SOURCE_LOCATION of the x decl when it comes
> from macro is the locus where the macro is used rather than the locus in the
> macro.
The actual issue is that "GCC diagnostic" uses the location passed to the
diagnostic function explicitly (or input_location), never the location set by
'+'. That is, warning("%q+D") uses input_location for testing against the
pragma but DECL_SOURCE_LOCATION for reporting the warning. Of course, such
behaviour breaks other cases, which is one reason to avoid '+'.
