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* c-ppoutput.c (pp_dir_change): New function. * c-common.h (pp_dir_change): New declaration. * cpplib.h (struct cpp_options): Remove working_directory field. * cppinit.c (cpp_find_main_file, cpp_push_main_file): Merge back to (cpp_read_main_file): as before 10-01. Call _cpp_stack_file. Don't handle -fworking_directory here, but in c_common_post_options. (read_original_directory): Don't back up when done. Don't clear no-longer used working_directory flag. * cpplib.h: Update declarations to match. * c-lex.c (cb_dir_change): Move to c-opts.c. (init_c_lex): Don't set dir_change callback here, since we want to set it even if flag_preprocess_only. * c-opts.c (cb_dir_change): Function moved from c-lex.c. (c_common_post_options): Set dir_change callback. Call pp_dir_change if approporiate. (finish_options): Don't call cpp_find_main_file here. Hence remove unneeded parameter and result. Do LC_RENAME for <built-in>. (c_common_post_options): Call cpp_read_main_file here instead. (c_common_init): Update accordingly. (push_command_line_include): Don't cpp_push_main_file. Do LC_RENAME rather than LC_LEASE to get back to main file. Compared to pre-10-01 version, inline cpp_rename_to_main_file. (c_common_parse_file): Call cpp_read_main_file for subsequent main files, but call finish_options for all files. * c-opts.c (sanitize_cpp_opts): Don't set cpp_opts->working_directory. * fix-header.c (read_scan_file): Call cpp_read_main_file instead of cpp_find_main_file + cpp_push_main_file. * c-lex.c (fe_file_change): Don't set main_input_filename here. * opts.c (handle_options): Only set main_input_filename first time. From-SVN: r77303
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