http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60761
--- Comment #8 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #5)
> which isn't perfect either. Is there a way for the C++ FE to get at the
> original function decl that was cloned? Like with
>
> Index: gcc/cp/error.c
> ===================================================================
> --- gcc/cp/error.c (revision 209210)
> +++ gcc/cp/error.c (working copy)
> @@ -34,6 +34,7 @@ along with GCC; see the file COPYING3.
> #include "pointer-set.h"
> #include "c-family/c-objc.h"
> #include "ubsan.h"
> +#include "cgraph.h"
>
> #include <new> // For placement-new.
>
> @@ -1145,7 +1146,17 @@ dump_decl (cxx_pretty_printer *pp, tree
>
> case FUNCTION_DECL:
> if (! DECL_LANG_SPECIFIC (t))
> - pp_string (pp, M_("<built-in>"));
> + {
> + cgraph_node *node;
> + if ((node = cgraph_get_node (t))
> + && node->former_clone_of)
> + {
> + dump_decl (pp, node->former_clone_of, flags);
> + pp_string (pp, M_(" <clone>"));
> + }
> + else
> + pp_string (pp, M_("<built-in>"));
> + }
> else if (DECL_GLOBAL_CTOR_P (t) || DECL_GLOBAL_DTOR_P (t))
> dump_global_iord (pp, t);
> else
>
Wouldn't it be better for the middle end to provide its own diagnostic_starter
function, which in turn calls the FE one and override
current_function_declaration around the call to the FE one by the original
function?
This will also allow in the future the middle-end to override other stuff that
it doesn't want the FE to deal with.
