From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by sourceware.org (Postfix) with ESMTPS id C10153858D32 for ; Tue, 14 Mar 2023 07:29:20 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org C10153858D32 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=suse.de Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 484371F88C for ; Tue, 14 Mar 2023 07:29:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678778959; h=from:from:reply-to:date:date:to:to:cc:mime-version:mime-version: content-type:content-type; bh=HaR4RgDuys+PMpg8i5Lrgua6Bkk4I+59XNytzZnKHXY=; b=r6VcEfzIuIB4AJsc6o1RD2ZFYsYZiXLTWAWRBm23rckx01Otb1pthbcJPRdJMyF64EVqSC 7pEok842MwkJpTmdAGySWxJ4dJ2OsVPPT/VGYNBTCzqqEGyQs4YN/kKkzpQNvzlFSznGPV UmXFVT9LhLQ6xTgpfGN7exwTXPbxk/s= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678778959; h=from:from:reply-to:date:date:to:to:cc:mime-version:mime-version: content-type:content-type; bh=HaR4RgDuys+PMpg8i5Lrgua6Bkk4I+59XNytzZnKHXY=; b=tOCpEuFWDtF73YBtaGBSaWESMgzMCozdH8+ngO8ZlfDr4R1fXYp1Fdtol+ldDJnNKBtOJX np2p/L/PvYXxh0AQ== Received: from wotan.suse.de (wotan.suse.de [10.160.0.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 3BCEB2C141 for ; Tue, 14 Mar 2023 07:29:19 +0000 (UTC) Date: Tue, 14 Mar 2023 07:29:19 +0000 (UTC) From: Richard Biener To: gcc-patches@gcc.gnu.org Subject: [PATCH] New testcase User-Agent: Alpine 2.22 (LSU 394 2020-01-19) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Spam-Status: No, score=-10.6 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,GIT_PATCH_0,MISSING_MID,SPF_HELO_NONE,SPF_PASS,TXREP 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: Message-ID: <20230314072919.LfppNEqbd4AaYDpdLxpTSHlU9VjhyTQsW5rULLzrX3w@z> This is a reduced testcase for an issue I ran into when trying to improve PTA compile-time further, there wasn't any C family runfail in the testsuite for this. Pushed. * g++.dg/torture/20230313.C: New testcase. --- gcc/testsuite/g++.dg/torture/20230313.C | 109 ++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 gcc/testsuite/g++.dg/torture/20230313.C diff --git a/gcc/testsuite/g++.dg/torture/20230313.C b/gcc/testsuite/g++.dg/torture/20230313.C new file mode 100644 index 00000000000..d1f348003bd --- /dev/null +++ b/gcc/testsuite/g++.dg/torture/20230313.C @@ -0,0 +1,109 @@ +/* { dg-do run } */ +/* { dg-additional-options "-fno-exceptions -fno-rtti" } */ + +extern "C" void free (void *); +void fancy_abort () { __builtin_abort (); } +struct vec_prefix +{ + unsigned m_alloc : 1; + unsigned m_using_auto_storage : 1; + unsigned m_num; +}; +struct vl_ptr +; +struct va_heap +{ + typedef vl_ptr default_layout; +}; +template +struct vec +; +template +struct vec +{ + T & operator[] (unsigned ix) + { + int *__trans_tmp_2; + !m_vecpfx.m_num ? fancy_abort (), 0 : 0; + __trans_tmp_2 = reinterpret_cast (this + 1); + return __trans_tmp_2[ix]; + } + bool iterate (unsigned , T *ptr) { + *ptr = 0; + return false; + } + void embedded_init (unsigned , unsigned num, unsigned aut) + { + m_vecpfx.m_alloc = + m_vecpfx.m_using_auto_storage = aut; + m_vecpfx.m_num = num; + } + void quick_grow (unsigned len) + { + !m_vecpfx.m_alloc ? fancy_abort (), 0 : m_vecpfx.m_num = len; + } + vec_prefix m_vecpfx; +}; +template +struct auto_vec : vec +{ + auto_vec () + { + m_auto.embedded_init (N, 0, 1); + long off = (char *) &m_auto - (char *) this; + this->m_vec = (vec *) ((char *) this + off); + } + ~auto_vec () + { + this->release (); + } + vec m_auto; + char m_data; +}; +template +struct vec +{ +void +release () +{ + bool __trans_tmp_1 = m_vec ? m_vec->m_vecpfx.m_using_auto_storage : false; + if (__trans_tmp_1) + return; + vec *&v = m_vec; + free (m_vec); + v = nullptr; +} +T &operator[] (unsigned ix) { return (*m_vec)[ix]; } +bool +iterate (unsigned ix, T *ptr) { + m_vec->iterate (ix, ptr); + return false; +} +void +quick_grow (unsigned len) +{ + m_vec->quick_grow (len); +} + vec *m_vec; +}; +void test_auto_alias () +{ + volatile int i = 1; + auto_vec v; + v.quick_grow (2); + v[0] = 1; + v[1] = 2; + int val; + for (int ix = i; v.iterate (ix, &val); ix++) + if (val != 2) + __builtin_abort (); + if (val != 0) + __builtin_abort (); +} +int main() +{ + test_auto_alias (); + return 0; +} -- 2.35.3