From: Charles Celerier Date: Thu, 8 May 2014 15:03:05 +0000 (+2000) Subject: Re: [PATCH v2 5/5] T360-symbol-hiding: Use nm instead of objdump. X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=0adb0efc5631ca3649f63c605bf76f4253230a5d;p=notmuch-archives.git Re: [PATCH v2 5/5] T360-symbol-hiding: Use nm instead of objdump. --- diff --git a/b0/583381723cda4a7e13bbb80453065d5dd91181 b/b0/583381723cda4a7e13bbb80453065d5dd91181 new file mode 100644 index 000000000..f7295a773 --- /dev/null +++ b/b0/583381723cda4a7e13bbb80453065d5dd91181 @@ -0,0 +1,243 @@ +Return-Path: +X-Original-To: notmuch@notmuchmail.org +Delivered-To: notmuch@notmuchmail.org +Received: from localhost (localhost [127.0.0.1]) + by olra.theworths.org (Postfix) with ESMTP id 1BD68431FBF + for ; Thu, 8 May 2014 08:03:17 -0700 (PDT) +X-Virus-Scanned: Debian amavisd-new at olra.theworths.org +X-Spam-Flag: NO +X-Spam-Score: -2.3 +X-Spam-Level: +X-Spam-Status: No, score=-2.3 tagged_above=-999 required=5 + tests=[RCVD_IN_DNSWL_MED=-2.3] autolearn=disabled +Received: from olra.theworths.org ([127.0.0.1]) + by localhost (olra.theworths.org [127.0.0.1]) (amavisd-new, port 10024) + with ESMTP id 5xsryG0rPHXZ for ; + Thu, 8 May 2014 08:03:09 -0700 (PDT) +Received: from smtp2.cs.Stanford.EDU (smtp2.cs.Stanford.EDU [171.64.64.26]) + (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) + (No client certificate requested) + by olra.theworths.org (Postfix) with ESMTPS id AC414431FAE + for ; Thu, 8 May 2014 08:03:09 -0700 (PDT) +Received: from c-24-11-133-78.hsd1.sc.comcast.net ([24.11.133.78] + helo=jane.lan) + by smtp2.cs.Stanford.EDU with esmtpsa (UNKNOWN:AES128-GCM-SHA256:128) + (Exim 4.80.1) (envelope-from ) + id 1WiPql-0001Zl-QJ; Thu, 08 May 2014 08:03:08 -0700 +From: Charles Celerier +To: David Bremner , Notmuch Mail +Subject: Re: [PATCH v2 5/5] T360-symbol-hiding: Use nm instead of objdump. +In-Reply-To: <87d2fov2qj.fsf@maritornes.cs.unb.ca> +References: <1399395748-44920-1-git-send-email-cceleri@cs.stanford.edu> + <1399434615-28425-1-git-send-email-cceleri@cs.stanford.edu> + <1399434615-28425-2-git-send-email-cceleri@cs.stanford.edu> + <87d2fov2qj.fsf@maritornes.cs.unb.ca> +User-Agent: Notmuch/0.18~rc0+32~gd5092c2 (http://notmuchmail.org) Emacs/24.3.1 + (x86_64-apple-darwin13.1.0) +Date: Thu, 08 May 2014 11:03:05 -0400 +Message-ID: +MIME-Version: 1.0 +Content-Type: multipart/signed; boundary="=-=-="; + micalg=pgp-sha1; protocol="application/pgp-signature" +X-Scan-Signature: 1d850ab87a3e5a2ab763966491000bbf +X-BeenThere: notmuch@notmuchmail.org +X-Mailman-Version: 2.1.13 +Precedence: list +List-Id: "Use and development of the notmuch mail system." + +List-Unsubscribe: , + +List-Archive: +List-Post: +List-Help: +List-Subscribe: , + +X-List-Received-Date: Thu, 08 May 2014 15:03:17 -0000 + +--=-=-= +Content-Type: text/plain + +David Bremner writes: + +> Charles Celerier writes: +>> test_begin_subtest 'comparing existing to exported symbols' +>> -objdump -t $TEST_DIRECTORY/../lib/*.o | awk '$4 == ".text" && $6 ~ "^notmuch" {print $6}' | sort | uniq > ACTUAL +>> +nm -g $TEST_DIRECTORY/../lib/*.o | sed -n 's/.*\s\+T\s\+_\(notmuch_.*\)/\1/p' | sort | uniq > ACTUAL +>> sed -n 's/[[:blank:]]*\(notmuch_[^;]*\);/\1/p' $TEST_DIRECTORY/../notmuch.sym | sort | uniq > EXPORTED +> +> Hmm. It seems like the _ there is wrong. It grabs all of the symbols +> starting with _notmuch, which are symbols we _don't_ want exported. +> It makes me wonder what ends up in "notmuch.sym" on MacOS, if that test +> passes for you. + +Ok. Apologies in advance for the verbose content of this email. Here is my notmuch.sym: + + $ cat notmuch.sym + { + global: + __ZTIN6Xapian10LogicErrorE; + __ZTIN6Xapian12RuntimeErrorE; + __ZTIN6Xapian16DocNotFoundErrorE; + __ZTIN6Xapian20InvalidArgumentErrorE; + __ZTIN6Xapian5ErrorE; + __ZTSN6Xapian10LogicErrorE; + __ZTSN6Xapian12RuntimeErrorE; + __ZTSN6Xapian16DocNotFoundErrorE; + __ZTSN6Xapian20InvalidArgumentErrorE; + __ZTSN6Xapian5ErrorE; + notmuch_status_to_string; + notmuch_database_create; + notmuch_database_open; + notmuch_database_close; + notmuch_database_compact; + notmuch_database_destroy; + notmuch_database_get_path; + notmuch_database_get_version; + notmuch_database_needs_upgrade; + notmuch_database_upgrade; + notmuch_database_begin_atomic; + notmuch_database_end_atomic; + notmuch_database_get_directory; + notmuch_database_add_message; + notmuch_database_remove_message; + notmuch_database_find_message; + notmuch_database_find_message_by_filename; + notmuch_database_get_all_tags; + notmuch_query_create; + notmuch_query_get_query_string; + notmuch_query_set_omit_excluded; + notmuch_query_set_sort; + notmuch_query_get_sort; + notmuch_query_add_tag_exclude; + notmuch_query_search_threads; + notmuch_query_search_messages; + notmuch_query_destroy; + notmuch_threads_valid; + notmuch_threads_get; + notmuch_threads_move_to_next; + notmuch_threads_destroy; + notmuch_query_count_messages; + notmuch_query_count_threads; + notmuch_thread_get_thread_id; + notmuch_thread_get_total_messages; + notmuch_thread_get_toplevel_messages; + notmuch_thread_get_messages; + notmuch_thread_get_matched_messages; + notmuch_thread_get_authors; + notmuch_thread_get_subject; + notmuch_thread_get_oldest_date; + notmuch_thread_get_newest_date; + notmuch_thread_get_tags; + notmuch_thread_destroy; + notmuch_messages_valid; + notmuch_messages_get; + notmuch_messages_move_to_next; + notmuch_messages_destroy; + notmuch_messages_collect_tags; + notmuch_message_get_message_id; + notmuch_message_get_thread_id; + notmuch_message_get_replies; + notmuch_message_get_filename; + notmuch_message_get_filenames; + notmuch_message_get_flag; + notmuch_message_set_flag; + notmuch_message_get_date; + notmuch_message_get_header; + notmuch_message_get_tags; + notmuch_message_add_tag; + notmuch_message_remove_tag; + notmuch_message_remove_all_tags; + notmuch_message_maildir_flags_to_tags; + notmuch_message_tags_to_maildir_flags; + notmuch_message_freeze; + notmuch_message_thaw; + notmuch_message_destroy; + notmuch_tags_valid; + notmuch_tags_get; + notmuch_tags_move_to_next; + notmuch_tags_destroy; + notmuch_directory_set_mtime; + notmuch_directory_get_mtime; + notmuch_directory_get_child_files; + notmuch_directory_get_child_directories; + notmuch_directory_destroy; + notmuch_filenames_valid; + notmuch_filenames_get; + notmuch_filenames_move_to_next; + notmuch_filenames_destroy; + local: *; + }; + +The output of the test in question (T360-symbol-hiding) after +applying all of the patches in this series is + + T360-symbol-hiding: Testing exception symbol hiding + PASS running test + PASS checking output + FAIL comparing existing to exported symbols + --- T360-symbol-hiding.3.EXPORTED 2014-05-08 + 14:48:52.000000000 +0000 + +++ T360-symbol-hiding.3.ACTUAL 2014-05-08 14:48:52.000000000 + +0000 + @@ -26,7 +26,11 @@ + notmuch_filenames_valid + notmuch_message_add_tag + notmuch_message_destroy + +notmuch_message_file_close + +notmuch_message_file_get_header + +notmuch_message_file_open + notmuch_message_freeze + +notmuch_message_get_author + notmuch_message_get_date + notmuch_message_get_filename + notmuch_message_get_filenames + @@ -39,6 +43,7 @@ + notmuch_message_maildir_flags_to_tags + notmuch_message_remove_all_tags + notmuch_message_remove_tag + +notmuch_message_set_author + notmuch_message_set_flag + notmuch_message_tags_to_maildir_flags + notmuch_message_thaw + @@ -58,6 +63,8 @@ + notmuch_query_search_threads + notmuch_query_set_omit_excluded + notmuch_query_set_sort + +notmuch_sha1_of_file + +notmuch_sha1_of_string + notmuch_status_to_string + notmuch_tags_destroy + notmuch_tags_get + +This output was a clear motivation for the patch in +id:1399402716-13714-1-git-send-email-cceleri@cs.stanford.edu. + +Here is some of output of the matches made on the output of nm: + + $ nm -g test/../lib/*.o | sed -n '/.*\s\+T\s\+_\(notmuch_.*\)/p' + 00000000000028c0 T _notmuch_database_add_message + 0000000000002280 T _notmuch_database_begin_atomic + 0000000000001af0 T _notmuch_database_close + 0000000000001de0 T _notmuch_database_compact + 0000000000000300 T _notmuch_database_create + 0000000000001db0 T _notmuch_database_destroy + 0000000000002300 T _notmuch_database_end_atomic + ... + +chuck + +--=-=-= +Content-Type: application/pgp-signature + +-----BEGIN PGP SIGNATURE----- +Version: GnuPG/MacGPG2 v2.0.22 (Darwin) + +iQEcBAEBAgAGBQJTa5ypAAoJEOjk698fDjuARSgIAIPEtOaujQVdM7QeM3CEBCk4 +xZpJ2macyLr6xR/b5PoE8fPiM48nortR33TJhU1+me9SEXBUSjR5qbZvUQfek5O9 +dy2CKnVP+r9Iv0crfTMkK9Kklf56/9OSn8mFwVwe2hHwZcvkrqR/x46EYAntO0S7 +g9Xg3E4MhH4/EvWdpLI4HOcnWbc4Srzhd07z+P8OgOoYXRQ63mYLJs90B0UqXtUd +Z2OxNZb/eYKwXplkqV8hxM1927+ne1pfQx1RwkZ1fLXJDFrp4vTjW7F6ciDf40ly +0KAd5on/BSzYZsDamgFjzLjiZK7wGVo3Q/KO6ILeKLW3A942DEN5NnywgZqJD8A= +=ErPe +-----END PGP SIGNATURE----- +--=-=-=--