From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Maxime Devos Newsgroups: gmane.lisp.guile.bugs Subject: bug#39954: bug#50153: Acknowledgement (call-with-values outside tail position + backtrace + compilation causes segfault) Date: Sat, 21 Aug 2021 22:17:56 +0200 Message-ID: <1d57f669b5c2cf2ae13c68e6cd267bf107553e94.camel@telenet.be> References: <94f8e7a679318bc39e2099ef0624da49449c16f0.camel@telenet.be> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="=-OH699vrjyUfHKlbgMSsI" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="27445"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Evolution 3.34.2 To: 50153@debbugs.gnu.org, 39954@debbugs.gnu.org Original-X-From: bug-guile-bounces+guile-bugs=m.gmane-mx.org@gnu.org Sun Aug 22 11:36:08 2021 Return-path: Envelope-to: guile-bugs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mHjtg-0006wm-9K for guile-bugs@m.gmane-mx.org; Sun, 22 Aug 2021 11:36:08 +0200 Original-Received: from localhost ([::1]:40474 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mHjte-0001Cp-UN for guile-bugs@m.gmane-mx.org; Sun, 22 Aug 2021 05:36:06 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:43310) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mHjta-0001CY-2r for bug-guile@gnu.org; Sun, 22 Aug 2021 05:36:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:54877) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mHjtZ-0007VY-RT for bug-guile@gnu.org; Sun, 22 Aug 2021 05:36:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mHjtZ-0001ki-Ov for bug-guile@gnu.org; Sun, 22 Aug 2021 05:36:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Maxime Devos Original-Sender: "Debbugs-submit" Resent-CC: bug-guile@gnu.org Resent-Date: Sun, 22 Aug 2021 09:36:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 39954 X-GNU-PR-Package: guile Original-Received: via spool by 39954-submit@debbugs.gnu.org id=B39954.16296249366700 (code B ref 39954); Sun, 22 Aug 2021 09:36:01 +0000 Original-Received: (at 39954) by debbugs.gnu.org; 22 Aug 2021 09:35:36 +0000 Original-Received: from localhost ([127.0.0.1]:38190 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mHjt6-0001jq-K7 for submit@debbugs.gnu.org; Sun, 22 Aug 2021 05:35:36 -0400 Original-Received: from andre.telenet-ops.be ([195.130.132.53]:34716) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mHjsx-0001jR-D2 for 39954@debbugs.gnu.org; Sun, 22 Aug 2021 05:35:27 -0400 Original-Received: from butterfly.local ([188.188.251.166]) by andre.telenet-ops.be with bizsmtp id kZbL2500P3c9yoU01ZbMyg; Sun, 22 Aug 2021 11:35:22 +0200 In-Reply-To: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telenet.be; s=r21; t=1629624922; bh=CWEqNBj8eDVy5nkHyA1564OscvGFjmcdyL3awmUqhbc=; h=Subject:From:To:In-Reply-To:References:Date; b=cIq+JavbBOyaOnCc+cfgxXNkf/Fet3ehZfj6v78b/XClJdmBFwnFD4GsIH3WxAbC2 YAmtzLjZam+dMeHLRUX15HapBk/cJRFvtp7jfC/0/veqOvmRL2k5r7JgUHah8mHzme QAL/6WWLm7v56hk4x8bXgMyzs+B83KvYC+R7qeE19JrnEJOimv7QFVJhi7CyBHHRFO 2QmTwjWEyjVBaQ1bvZJjFUFQW5c0/sdDB14PXXyvO9ihm5tkBvCeqbNa5x90YNwlt1 DTbfCdN4pdSh9hQwRlPbtqdqh7bzS30nWNCTqhEQiBk4ML2aeWv1Wlqa4/QSVtB4Lw IFyNboR/kVQRA== X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guile@gnu.org List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guile-bounces+guile-bugs=m.gmane-mx.org@gnu.org Original-Sender: "bug-guile" Xref: news.gmane.io gmane.lisp.guile.bugs:10174 Archived-At: --=-OH699vrjyUfHKlbgMSsI Content-Type: multipart/mixed; boundary="=-DvStj6c5c/MjloeWy82+" --=-DvStj6c5c/MjloeWy82+ Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I did some debugging on the C side, using 'rr': LD_LIBRARY_PATH=3D.libs ../meta/uninstalled-env rr record ./.libs/guile --f= resh-auto-compile -l ../crash.scm it leads to a segfault, as expected. According to #39954, which looks similar, 'frame-local-ref' returns (SCM)0x0. So I tried some reverse debug= ging: rr replay guile-3 break scm_frame_local_ref reverse-continue reverse-continue I noticed "repr" was STACK_ITEM_SCM, and item->as_scm was set to 0x07 (which is invalid). On another run, it was set to 0x09 (also invalid?). I modified scm_frame_local_ref a bit so it ignores these 0x07 and 0x09 and treats them like SCM_EOF_VAL instead. That allows printing the backtra= ce, though I don't see those # appearing in the output. Would someone know what's going on here? Greetings, Maxime --=-DvStj6c5c/MjloeWy82+ Content-Disposition: inline; filename="printf.patch" Content-Transfer-Encoding: base64 Content-Type: text/x-patch; name="printf.patch"; charset="UTF-8" ZGlmZiAtLWdpdCBhL2xpYmd1aWxlL2ZyYW1lcy5jIGIvbGliZ3VpbGUvZnJhbWVzLmMKaW5kZXgg MGJiNDA1NzljLi44N2FmYWVjM2QgMTAwNjQ0Ci0tLSBhL2xpYmd1aWxlL2ZyYW1lcy5jCisrKyBi L2xpYmd1aWxlL2ZyYW1lcy5jCkBAIC00MSw2ICs0MSw3IEBACiAKICNpbmNsdWRlICJmcmFtZXMu aCIKIAorI2luY2x1ZGUgPHN0ZGlvLmg+CiAKIFNDTQogc2NtX2NfbWFrZV9mcmFtZSAoZW51bSBz Y21fdm1fZnJhbWVfa2luZCBraW5kLCBjb25zdCBzdHJ1Y3Qgc2NtX2ZyYW1lICpmcmFtZSkKQEAg LTI3Miw2ICsyNzMsMTEgQEAgc2NtX2ZyYW1lX2xvY2FsX3JlZiAoU0NNIGZyYW1lLCBTQ00gaW5k ZXgsIFNDTSByZXByZXNlbnRhdGlvbikKICAgICAgIHN3aXRjaCAocmVwcikKICAgICAgICAgewog ICAgICAgICAgIGNhc2UgU1RBQ0tfSVRFTV9TQ006CisgICAgICAgICAgICBmcHJpbnRmKHN0ZGVy ciwgImk6ICV1ICBTQ006ICVwXG4iLCAodW5zaWduZWQpIGksICh2b2lkKilpdGVtLT5hc191NjQp OworICAgICAgICAgICAgaWYgKGl0ZW0tPmFzX3U2NCA9PSAweDA3KQorICAgICAgICAgICAgICBy ZXR1cm4gU0NNX0VPRl9WQUw7CisgICAgICAgICAgICBpZiAoaXRlbS0+YXNfdTY0ID09IDB4MDkp CisgICAgICAgICAgICAgIHJldHVybiBTQ01fRU9GX1ZBTDsKICAgICAgICAgICAgIHJldHVybiBp dGVtLT5hc19zY207CiAgICAgICAgICAgY2FzZSBTVEFDS19JVEVNX0Y2NDoKICAgICAgICAgICAg IHJldHVybiBzY21fZnJvbV9kb3VibGUgKGl0ZW0tPmFzX2Y2NCk7Cg== --=-DvStj6c5c/MjloeWy82+-- --=-OH699vrjyUfHKlbgMSsI Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- iI0EABYKADUWIQTB8z7iDFKP233XAR9J4+4iGRcl7gUCYSFfaBccbWF4aW1lZGV2 b3NAdGVsZW5ldC5iZQAKCRBJ4+4iGRcl7i3CAP4izJlLvCtkmhRoM+VyXZ7fURi4 lgtWs84SscIhO7njqwD8C6pl9c8nluzEo+ncrluxPdJtDlReExRBhGdmdq4tYgQ= =Ax19 -----END PGP SIGNATURE----- --=-OH699vrjyUfHKlbgMSsI--