From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: from zero.zsh.org (zero.zsh.org [IPv6:2a02:898:31:0:48:4558:7a:7368]) by inbox.vuxu.org (Postfix) with ESMTP id 6F6D22426D for ; Thu, 29 Feb 2024 05:20:42 +0100 (CET) ARC-Seal: i=1; cv=none; a=rsa-sha256; d=zsh.org; s=rsa-20210803; t=1709180442; b=joOHK4Nc3MxG4wMtkhg73RvPD29mk7MXyGkVNXX2K8rJWoOi+4BrD15Xj7mFDbILNU1Gos4iHf kzLQXsO0QhOdDF5HMvmpK9cGCvsN2dXHwIuNIENOG/A/QsYj5Nxh6gOSLIPAbNLD5sAsz0Vr3K hamMRT0HeVw7+moZ62Qpa4+4bcPYOB83i2dEX8NBnOzwrckI2ZGWsRbu0tns8ksEgV4e0XeV/E FwG4iP4w9Ia1XI31CCqnUsJuIm5tcJQc75TiSSWZbtEmbQY982qSrmvX4RgeHWLo1TcRBaJYJU +N9XRgSb3pYlku+yyXpxOQjm2BgBNaGXkuSposVzIWVAKA==; ARC-Authentication-Results: i=1; zsh.org; iprev=pass (mail-ej1-f53.google.com) smtp.remote-ip=209.85.218.53; dkim=pass header.d=brasslantern-com.20230601.gappssmtp.com header.s=20230601 header.a=rsa-sha256; dmarc=none header.from=brasslantern.com; arc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed; d=zsh.org; s=rsa-20210803; t=1709180442; bh=ZtmdvomrugnD1IJmClGQbuFwUYuE2ICeDrYt8bswL/M=; h=List-Archive:List-Owner:List-Post:List-Unsubscribe:List-Subscribe:List-Help: List-Id:Sender:Content-Transfer-Encoding:Content-Type:Cc:To:Subject: Message-ID:Date:From:In-Reply-To:References:MIME-Version:DKIM-Signature: DKIM-Signature; b=LfekGSID55+/bxIeUFkghUufuzvLHidyiBwEfNj+BROr7R+zsqk+2N0Txnk3Mf6PFk/Fr4ulWU rhLa1+OvA56zv+/ULaIQSSj86j/3Yed34QhN5QU1X67wUZglOSGcMkOORZ5s5ATcwdgIKArJqX RwjooG48wQ6VMB17PuIkfPLZ0u5eolJjBMq+/hfaysR4Y2iovvio8UprdJ7VXwnnyKcrbCiXwF bkutkLSUGArhT7vyh+jyGRBqg+iLJbHfYsj1VpV0EF9Xom+6utPxqIMU6aqQvkzF4QOWvA9H5H mVOELcrO4skQWynkkEYqKEaJNIwyOirb5qFd2RQl2pYB0w==; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=zsh.org; s=rsa-20210803; h=List-Archive:List-Owner:List-Post:List-Unsubscribe: List-Subscribe:List-Help:List-Id:Sender:Content-Transfer-Encoding: Content-Type:Cc:To:Subject:Message-ID:Date:From:In-Reply-To:References: MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID; bh=mlbyz8ZEYgOL3jUpAFqJL+/mHczBknAA6oSf/+6XXwk=; b=S1q/knbJOLqi/9Bc8E5ClPj0/S DRN5m8R77i9cNiVPt7CoOIXtjxCLAMIK1l8u5nKG5f3lwnlfhUbcy9y6xFJKkQJkTiYj2AU93GmNh UJW1MLJ3h49xfNjud7QhVQk2ijnZ4DKOCSYBxEK3sJPEBxxXEQfpAxquFcoMtVk1cDKeuqECGExxm B9a6PE/bcMbI4hxglUVdeQwH3p8Dl2TTFPFup9wbEjmOAPb76Yf+ePw6YDjerezg+H5ZL3TlB9v0h cks97KgA3rp2iVQJDalsQV/iNkWFO5nQxrIObmtysS6xm6EmUILeRWAx+Jb6M6yuYKIsSXCxkJkH3 FM9mgXwg==; Received: by zero.zsh.org with local id 1rfXuU-000ES5-Et; Thu, 29 Feb 2024 04:20:42 +0000 Authentication-Results: zsh.org; iprev=pass (mail-ej1-f53.google.com) smtp.remote-ip=209.85.218.53; dkim=pass header.d=brasslantern-com.20230601.gappssmtp.com header.s=20230601 header.a=rsa-sha256; dmarc=none header.from=brasslantern.com; arc=none Received: from mail-ej1-f53.google.com ([209.85.218.53]:58756) by zero.zsh.org with esmtps (TLS1.3:TLS_AES_128_GCM_SHA256:128) id 1rfXtu-000E8n-4e; Thu, 29 Feb 2024 04:20:07 +0000 Received: by mail-ej1-f53.google.com with SMTP id a640c23a62f3a-a293f2280c7so88338466b.1 for ; Wed, 28 Feb 2024 20:20:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brasslantern-com.20230601.gappssmtp.com; s=20230601; t=1709180405; x=1709785205; darn=zsh.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=mlbyz8ZEYgOL3jUpAFqJL+/mHczBknAA6oSf/+6XXwk=; b=zu4MI0drhiGnRV5TZqLTKiBbJyqnaQqCnus8s6DBtQOi4F5+B2+FoGd+9QzByNmiEF SLMaK6HolwvhAhDRPYYt7ZVNMkzDN9tE63TJ2LrD/BLT39T83VPQXAPNSyWAZ+zgiUEY 6YffZ9Q6JyvOTDd8dQ0ckrwhtdYX1a2kVX1XIuibTH8Ik0+30uIqhS88QwrTn8a5rHlT lMNO68Ar9KZa57uFMyfgZ2VFejZYSHqO++4WS0ifzIxjRBAw72NKsLfGz4BHt6q6de5x is8rRRt7IDXwT6R1ImjswPnsvDhVjhrJUNnQtiTa/6wUF+t1XD2cUqNSUNxTK2J4HkWx DUlA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709180405; x=1709785205; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=mlbyz8ZEYgOL3jUpAFqJL+/mHczBknAA6oSf/+6XXwk=; b=tpUMbLm49zvB8wXUG9IbbIbg6OHDZ7TQVTLgkDAlJvbmozO9D0Ydmzxd2LGEnopByB 435+XfVMG7jdOeeH3XkPfmFTR0j+jyo2jfEX+OJF51QFYxJ9yZDHVN7bE7AZ9ePKozv8 xpgpy/mbo+xHr9Xs5J0pGSDeGNY6hUfj8TD1cQButX+IyBQaXGhhR8yQoqNJIKdH2qKI twid/SWMPZ5053uEFJjgNW/u0hvsoKIZZbIV57oxERO7bL1OsivyV/zKjGYy6D4V9C4p vBzIzLplzo9XPwUrKwlh8vfhQjGWw0hx4t82tA9M8IPWH8Kq9SWfJ9cDYJPiGivPSSbZ szUQ== X-Gm-Message-State: AOJu0YyYD0F6IFuOnpr7gDhHujru3Hjei7myflVlbhUZpJ7h2CPe15PW YODINpAo8n3XTWjbwLP5RGjgWdAI9NHD+D0tYa2WMg1bilS/6eQKuzdsGxhxWzIt0x423vVJ4R0 l9cQNRJJbDWtHJCKVZUKGXEDjYyqhzaDz7XrEz62Er0AtzQbEPA== X-Google-Smtp-Source: AGHT+IHSXWscWj7885TJTwolY2MNNq2bMVjGgg1ct8o95GaJ0y0EhMO1YwaOhiGuGeHITOaMKaTEOoobn9vDKMW6a/A= X-Received: by 2002:a17:906:6d15:b0:a43:da8a:9ed7 with SMTP id m21-20020a1709066d1500b00a43da8a9ed7mr582586ejr.25.1709180405096; Wed, 28 Feb 2024 20:20:05 -0800 (PST) MIME-Version: 1.0 References: <5A8A5063-D43C-4AD0-A03E-0A5E84259FFA@kba.biglobe.ne.jp> In-Reply-To: <5A8A5063-D43C-4AD0-A03E-0A5E84259FFA@kba.biglobe.ne.jp> From: Bart Schaefer Date: Wed, 28 Feb 2024 20:19:53 -0800 Message-ID: Subject: Re: D04parameter.ztst crashes if USE_MMAP is not defined To: "Jun. T" Cc: zsh-workers@zsh.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Seq: 52639 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: , List-Subscribe: , List-Unsubscribe: , List-Post: List-Owner: List-Archive: On Wed, Feb 28, 2024 at 8:23=E2=80=AFAM Jun. T wrote: > > line 4322 in subst.c is: > xlen =3D strlen(x); > It seems x (=3D aval[0]) points to an already freed memory If I step through this with gdb, x should point to the result of dupstring("") from 3823 val =3D dupstring(""); (gdb) p aval $19 =3D (char **) 0x7ffff7fbc4a0 (gdb) p val $21 =3D 0x7ffff7fbc4a8 "" (gdb) p x $22 =3D 0x7ffff7fbc4a8 "" 0x7ffff7fbc4a0 is returned from hcalloc() here: 3945 return pm->u.str ? pm->u.str : (char *) hcalloc(1); However, getting there is a bit questionable: getvaluearr (v=3D0x7fffffffd120) at params.c:686 689 else if (PM_TYPE(v->pm->node.flags) =3D=3D PM_ARRAY) 690 return v->arr =3D v->pm->gsu.a->getfn(v->pm); (gdb) s strgetfn (pm=3D0x5555555ebd95 ) at params.c:3944 Why is gsu.a->getfn pointed at strgetfn ? I could imagine that does the wrong thing from time to time.