From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) by sourceware.org (Postfix) with ESMTPS id 0D16A3858C52 for ; Sat, 16 Dec 2023 01:45:19 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 0D16A3858C52 Authentication-Results: sourceware.org; dmarc=pass (p=reject dis=none) header.from=disroot.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=disroot.org ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 0D16A3858C52 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=178.21.23.139 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1702691120; cv=none; b=sohJWjAvJXzS9n0JJ5NnIRqybygu7ccPGog/qCFTAchnKzTsjttJtVzZPuldHVF1g3Zblc2kDDBrwFfaxTX2NQDvd5k61Iz3qeYm5TUt5jh2MgbY6ahZ8PrmsHMxOYMJXW+1VBZRur5VhxE7zrtZ1E9cOp+35/p9qQNIC2vm67E= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1702691120; c=relaxed/simple; bh=yoe9moNZl1pPqcH405AmFsR9afhnHJW2fdPKp4DHS1Q=; h=MIME-Version:DKIM-Signature:Date:From:To:Subject:Message-ID; b=D9NhKNpZvPK/qjTyP/JbYtsl1YwG0VubpWR2/V3Rnk1+TRNx83FBPlqKO6Cwngm1nkKkZp9RvxRItS1Zu0hKaPLYzIz8MDJWRxfZWIbWLfxTrmanXEBNChHpL3iCQwdqlBed31TN04WCMVsjGgxHUqPsqXs1nhTM4hEPRpVvYJo= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from localhost (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 76CEC41BCF for ; Sat, 16 Dec 2023 02:45:17 +0100 (CET) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rbK7W9sGwql4 for ; Sat, 16 Dec 2023 02:45:16 +0100 (CET) MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1702691116; bh=yoe9moNZl1pPqcH405AmFsR9afhnHJW2fdPKp4DHS1Q=; h=Date:From:To:Subject; b=I49M5xg/VV3tsZrekeEZzhOk36hkHfyai0mo5q7IUQvQlJ36s3cPaf5jp9xjk6Xqq /KGKg1udsaNZc8hjsGlhOTwK5hLKmv5RLDC9NcSpgVgH/J+OZzVgkOy8x2RLqpeGm3 ituidp11ri2i7pmqhkkePZ2NaL0DB/fplhTXZPu6txW8texoLc5tewBxRx1acPNKaj LYR8j3BDIhKlMV2fbaSHOEo87FgJfz6DekRNSURc7UQ5nIZaiT5gJYDgdFFiZIyPiG NJUGZjls6VeYOYl9XFfQd+cjVxCxGTwLLGZg0AchhCpQkQ6hxa3sjqV5t+Cu+2MtuF PItXCwOhMae+w== Date: Sat, 16 Dec 2023 01:45:16 +0000 From: peter0x44 To: gdb@sourceware.org Subject: Assertion `pc_in_thread_step_range (pc, tp)' failed when executing int3 instruction Message-ID: <54e8eb183fec7cd01bec92ba23b83863@disroot.org> X-Sender: peter0x44@disroot.org Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,KAM_SHORT,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: For the following code: #include int main(void) { __asm__("int3"); // give code to step through for (int i = 0; i < 10; ++i) { printf("%d\n", i); } } Compiled with: gcc -o int3 -g3 -O2 When I try debugging under GDB 13.2, I get the following: 0x7fb54815cd89 ??? 0x558eebc578e4 ??? 0xffffffffffffffff ??? --------------------- ../../gdb/infrun.c:2640: internal-error: resume_1: Assertion `pc_in_thread_step_range (pc, tp)' failed. A problem internal to GDB has been detected, further debugging may prove unreliable. Quit this debugging session? (y or n) n This is a bug, please report it. For instructions, see: . This instruction seems to be the standard way to implement a breakpoint from code. Clang has an intrinsic __builtin_debugtrap() which generates it, and Microsoft Visual C++ generates it from __debugbreak().