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	* diagnostic.c (default_diagnostic_starter,
	default_diagnostic_finalizer): New functions.
	(diagnostic_for_asm, diagnostic_for_decl): Tweak.
	(pedwarn, pedwarn_with_file_and_line, error,
	error_with_file_and_line, fatal, warning,
	warning_with_file_and_line): Adjust call to report_diagnostic.
	(report_diagnostic): Rework.
	(set_diagnostic_context): New function.

	* diagnostic.h (struct diagnostic_context): New data structure.
	(diagnostic_message, diagnostic_argument_list,
	diagnostic_file_location, diagnostic_line_location,
	diagnostic_is_warning, diagnostic_starter, diagnostic_finalizer,
	diagnostic_finalizer, diagnostic_auxiliary_data): New macros.
	(set_diagnostic_context): Declare.
	(report_diagnostic): Change prototype.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@35817 138bc75d-0d04-0410-961f-82ee72b054a4