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Our macro use hook passes a location, but doesn't recieve it from the using location. This patch adds the extra location_t parameter and passes it though. A second cleanup is breaking out the macro comparison code from the redefinition warning. That;ll turn out useful for modules. Finally, there's a filename comparison needed for the location optimization of rewinding from line 2 (occurs during the emission of builtin macros). libcpp/ * internal.h (_cpp_notify_macro_use): Add location parm. (_cpp_maybe_notify_macro_use): Likewise. * directives.c (_cpp_do_file_change): Check we've not changed file when optimizing a rewind. (do_ifdef): Pass location to _cpp_maybe_notify_macro_use. (do_ifndef): Likewise. Delete obsolete comment about powerpc. * expr.c (parse_defined): Pass location to _cpp_maybe_notify_macro_use. * macro.c (enter_macro_context): Likewise. (warn_of_redefinition): Break out helper function. Call it. (compare_macros): New function broken out of warn_of_redefinition. (_cpp_new_macro): Zero all fields. (_cpp_notify_macro_use): Add location parameter.
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