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When a built-in macro is expanded, the location of the token in the epansion list is the location of the expansion point of the built-in macro. This patch creates a virtual location for that token instead, effectively tracking locations of tokens resulting from built-in macro tokens. libcpp/ * include/line-map.h (line_maps::builtin_location): New data member. (line_map_init): Add a new parameter to initialize the new line_maps::builtin_location data member. * line-map.c (linemap_init): Initialize the line_maps::builtin_location data member. * macro.c (builtin_macro): Create a macro map and track the token resulting from the expansion of a built-in macro. gcc/ * input.h (is_location_from_builtin_token): New function declaration. * input.c (is_location_from_builtin_token): New function definition. * toplev.c (general_init): Tell libcpp what the pre-defined spelling location for built-in tokens is. Signed-off-by: Dodji Seketeli <dodji@redhat.com> From-SVN: r212637
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