Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:120754 Return-Path: Delivered-To: mailing list internals@lists.php.net Received: (qmail 25118 invoked from network); 5 Jul 2023 22:18:17 -0000 Received: from unknown (HELO php-smtp4.php.net) (45.112.84.5) by pb1.pair.com with SMTP; 5 Jul 2023 22:18:17 -0000 Received: from php-smtp4.php.net (localhost [127.0.0.1]) by php-smtp4.php.net (Postfix) with ESMTP id 9F1181804F2 for ; Wed, 5 Jul 2023 15:18:16 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on php-smtp4.php.net X-Spam-Level: X-Spam-Status: No, score=-0.7 required=5.0 tests=BAYES_05,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.2 X-Spam-ASN: AS15169 209.85.128.0/17 X-Spam-Virus: No X-Envelope-From: Received: from mail-pf1-f174.google.com (mail-pf1-f174.google.com [209.85.210.174]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by php-smtp4.php.net (Postfix) with ESMTPS for ; Wed, 5 Jul 2023 15:18:16 -0700 (PDT) Received: by mail-pf1-f174.google.com with SMTP id d2e1a72fcca58-666ecb21f86so136705b3a.3 for ; Wed, 05 Jul 2023 15:18:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1688595495; x=1691187495; h=content-transfer-encoding:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=FG7Odk6eWakO0w3LFJFf1BuGQfEoywGvaQ6ANOdk2Lc=; b=p0Rc92GJ+Z0fNoaJ85FU7zKzy0IWFHyPT0ITyYa7iXq5lVXInlEJzqfTIspmWj4xxB JMQpVtsu5kteLGBkmjKfAUl79/cerUbaKLjFtJQUgBubOc1MPUYpXoyi7Xibp0R86K3e fLEq7YsfbSZObs6/qzx5/dDrgx6bOMFmdtRRSQFi3ZqPs1i3oFIecgh5+b/0rRWF/j7p 9O5bvefXMAZZx6jMqjBavLkk1byT4c98PVx6T4AIfhfFxfRE9aq6gy/WoxORWLSmzaf5 QUCd5IILCWCIiCUJI0F5Pv18ReC+rG5+djcjVzV7DVcqS9RO/wiV2bO5/0jd0IFufOf4 46IA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688595495; x=1691187495; h=content-transfer-encoding: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=FG7Odk6eWakO0w3LFJFf1BuGQfEoywGvaQ6ANOdk2Lc=; b=hEFQaVwkRXF7ELzusFtwmVQb22ghAa4kVmkcrGiegqizC8AGTMV8+L7+FOooSSY5u/ sPHQ9JQ3Qp5aT7Z522Y9qy1vxihLifioM5ZgYBk+Fa8vhvcAX+zrDgCNcU4GXF8lKoIP KX8lR6cU4Yu8Ud6oklE2ubnh99FrdLivymBmjPjPdsPODv7mRR0e5em3P64aVfC9nz0O HkO4AICw6T0BBTV48FZ9svf9AZrpPkS6VdvhNUJPrcW/wESdfA3vu0pd2KTlVRgpXXpn WSNbpU9Phwts0Bpb0s7r4MeaoO4jpXV3sV1g7jgcSyJlQRSThClYECiGkja2SAT3qXrq Gf1Q== X-Gm-Message-State: ABy/qLbmc5gB6gr9nsku6HneVeb2whb7jPlkbqZ/U+gdx63bfvbwJ9b1 BjcKPqhjkvso4rm+AMTBtPRqvoQbSPMiDS+ZyW2KBg2Yj/0= X-Google-Smtp-Source: APBJJlFkASfOXg9z/l3oh78i/aDZLIohxI7t8m6Elf1YGpAefiBQAmZb+R5w+BO+m30J9MAY5f8uEmsu5Y8vJMEwZuA= X-Received: by 2002:a05:6a00:2195:b0:668:81c5:2f8a with SMTP id h21-20020a056a00219500b0066881c52f8amr172328pfi.17.1688595494876; Wed, 05 Jul 2023 15:18:14 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Thu, 6 Jul 2023 00:18:03 +0200 Message-ID: To: PHP internals Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [PHP-DEV] ??= and function calls From: tovilo.ilija@gmail.com (Ilija Tovilo) Hi Fl=C3=A1vio On Wed, Jul 5, 2023 at 12:17=E2=80=AFPM Fl=C3=A1vio Heleno wrote: >> > I recently discovered some unfortunate behavior of the coalesce >> > assignment operator (??=3D) in combination with function calls. > > Great catch Ilija! > > Do you mind sharing how did you stumble upon it? Oh, it's unspectacular. oss-fuzz found a related problem (https://github.com/php/php-src/pull/11581) which made me look into the implementation of ??=3D which is when I noticed the strange behavior. Ilija