From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Pip Cet Newsgroups: gmane.emacs.bugs Subject: bug#36649: 27.0.50; pure space and pdumper Date: Sun, 21 Jul 2019 18:07:43 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="0000000000002b7b11058e34d88e" Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="199863"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 36649@debbugs.gnu.org, Paul Eggert To: Robert Pluim Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Jul 21 20:09:11 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hpGGk-000ptG-7t for geb-bug-gnu-emacs@m.gmane.org; Sun, 21 Jul 2019 20:09:10 +0200 Original-Received: from localhost ([::1]:57168 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hpGGi-0001qW-Lr for geb-bug-gnu-emacs@m.gmane.org; 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charset="UTF-8" On Sun, Jul 21, 2019 at 5:56 PM Robert Pluim wrote: > >>>>> On Sun, 21 Jul 2019 17:43:05 +0000, Pip Cet said: > > Pip> On Sun, Jul 21, 2019 at 3:06 PM Robert Pluim wrote: > >> Hmm, it crashed the first time I ran make, then I got distracted, so I > >> ran make again later, and this time it built: > >> > >> make[2]: Nothing to be done for `all'. > >> ELC char-fold.elc > >> freeing symbol def-tmp-var > > Pip> Hmm. So it worked with the second patch, but only when you reran make? > Pip> That's strange. Looking at the crash backtrace again, it seems that > Pip> this is the initial garbage collection, when everything should be > Pip> pristine. I still think it dies while marking the obarray, upon > Pip> encountering a symbol which has somehow become corrupted... > > OK. How do we go about detecting which symbol that is? I'm not sure about debugging on macOS, but can you get a full backtrace, or a core dump, or both? We're particularly interested in what "i" is in mark_vectorlike. Otherwise, the attached patch should produce (probably a lot of) information, the last lines of which would be interesting... --0000000000002b7b11058e34d88e Content-Type: text/x-patch; charset="US-ASCII"; name="0001-Other-debugging-changes.patch" Content-Disposition: attachment; filename="0001-Other-debugging-changes.patch" Content-Transfer-Encoding: base64 Content-ID: X-Attachment-Id: f_jyd9xfcr0 RnJvbSBmMzY2ZDY2ZTgzZDc2ZGYxZDg5ZTI2NGI0NjNhNmY5MDM0NTlkMDI0IE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBQaXAgQ2V0IDxwaXBjZXRAZ21haWwuY29tPgpEYXRlOiBTdW4s IDIxIEp1bCAyMDE5IDE4OjAzOjE3ICswMDAwClN1YmplY3Q6IFtQQVRDSF0gT3RoZXIgZGVidWdn aW5nIGNoYW5nZXMuCgotLS0KIHNyYy9hbGxvYy5jIHwgNyArKysrKystCiAxIGZpbGUgY2hhbmdl ZCwgNiBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9uKC0pCgpkaWZmIC0tZ2l0IGEvc3JjL2FsbG9j LmMgYi9zcmMvYWxsb2MuYwppbmRleCAxYjU1YWQ4Y2FiLi5mZTk4ZWNhMDg2IDEwMDY0NAotLS0g YS9zcmMvYWxsb2MuYworKysgYi9zcmMvYWxsb2MuYwpAQCAtNTY2Myw3ICs1NjYzLDEwIEBAIG1h cmtfdmVjdG9ybGlrZSAodW5pb24gdmVjdG9ybGlrZV9oZWFkZXIgKmhlYWRlcikKICAgICAgVGhl IGRpc3RpbmN0aW9uIGlzIHVzZWQgZS5nLiBieSBMaXNwX1Byb2Nlc3Mgd2hpY2ggcGxhY2VzIGV4 dHJhCiAgICAgIG5vbi1MaXNwX09iamVjdCBmaWVsZHMgYXQgdGhlIGVuZCBvZiB0aGUgc3RydWN0 dXJlLi4uICAqLwogICBmb3IgKGkgPSAwOyBpIDwgc2l6ZTsgaSsrKSAvKiAuLi5hbmQgdGhlbiBt YXJrIGl0cyBlbGVtZW50cy4gICovCi0gICAgbWFya19vYmplY3QgKHB0ci0+Y29udGVudHNbaV0p OworICAgIHsKKyAgICAgIGZwcmludGYgKHN0ZGVyciwgIiVkXG4iLCAoaW50KWkpOworICAgICAg bWFya19vYmplY3QgKHB0ci0+Y29udGVudHNbaV0pOworICAgIH0KIH0KIAogLyogTGlrZSBtYXJr X3ZlY3Rvcmxpa2UgYnV0IG9wdGltaXplZCBmb3IgY2hhci10YWJsZXMgKGFuZApAQCAtNjA3OSw2 ICs2MDgyLDggQEAgI2RlZmluZSBDSEVDS19BTExPQ0FURURfQU5EX0xJVkVfU1lNQk9MKCkJKCh2 b2lkKSAwKQogICAgICAgewogCXN0cnVjdCBMaXNwX1N5bWJvbCAqcHRyID0gWFNZTUJPTCAob2Jq KTsKICAgICAgIG5leHRzeW06CisJaWYgKCFOSUxQIChwdHItPnUucy5uYW1lKSkKKwkgIGZwcmlu dGYgKHN0ZGVyciwgIiVwICVzXG4iLCBwdHIsIFNEQVRBIChwdHItPnUucy5uYW1lKSk7CiAgICAg ICAgIGlmIChzeW1ib2xfbWFya2VkX3AgKHB0cikpCiAgICAgICAgICAgYnJlYWs7CiAgICAgICAg IENIRUNLX0FMTE9DQVRFRF9BTkRfTElWRV9TWU1CT0wgKCk7Ci0tIAoyLjIyLjAKCg== --0000000000002b7b11058e34d88e--