From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.gentoo.org (woodpecker.gentoo.org [IPv6:2001:470:ea4a:1:5054:ff:fec7:86e4]) by sourceware.org (Postfix) with ESMTP id C89F9385840D for ; Tue, 9 Apr 2024 12:56:35 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org C89F9385840D Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gentoo.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gentoo.org ARC-Filter: OpenARC Filter v1.0.0 sourceware.org C89F9385840D Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=2001:470:ea4a:1:5054:ff:fec7:86e4 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1712667398; cv=none; b=ok9Jf4kU0fe+yg8bMUavXpI30z1qH41liwZ4qmH8znYjbf42ZPI/qA1dlLz42u88tpRySCZBd8zLXBFOpShIgTKmMQt3ksPWNZHltXCBzMupUuBypPa0aPCqqhZ6JTmS6nOJGfkSEmb+oZrGz3A70lHPd1ODZFuQdcvYV7kZefg= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1712667398; c=relaxed/simple; bh=oKxEsXI6LUXuXpV5dukMox0A0W9OnIiD7FbevIM+KEA=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=eyZ/qsFx0/lU2UX0r3zRXYNKbXYy/6w5t4WocqOa8zXcFW5GoFky4Db4EUeWbvyDXRCLBYi8+wfGBDxfbTuIJ4AttZ075KOGhD0xDW/6CORpXMnXAJfK/bXBHou8gTs1tXDLt6zeDInt5pwCkALKtuE0AsxcaE1cCjub+qEUEUQ= ARC-Authentication-Results: i=1; server2.sourceware.org From: Sam James To: Sebastian Huber Cc: Florian Weimer , gcc-patches@gcc.gnu.org, Gerald Pfeifer Subject: Re: [PATCH v3 06/11] c: Turn -Wimplicit-function-declaration into a permerror In-Reply-To: <61b1ac1e-26d8-494d-ace2-175f06e8f632@embedded-brains.de> (Sebastian Huber's message of "Tue, 9 Apr 2024 14:26:34 +0200") Organization: Gentoo References: <1f9c86b42e3c99ba679df6282f6c28f359c3f4ec.1700473918.git.fweimer@redhat.com> <9b9591c7-7080-4fb8-9486-23408e77cdde@embedded-brains.de> <87o7aizqhz.fsf@gentoo.org> <61b1ac1e-26d8-494d-ace2-175f06e8f632@embedded-brains.de> User-Agent: mu4e 1.12.2; emacs 30.0.50 Date: Tue, 09 Apr 2024 13:56:30 +0100 Message-ID: <87frvuzoch.fsf@gentoo.org> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Status: No, score=-10.5 required=5.0 tests=BAYES_00,GIT_PATCH_0,JMQ_SPF_NEUTRAL,KAM_DMARC_STATUS,KAM_SHORT,RCVD_IN_DNSWL_LOW,SPF_HELO_PASS,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: Sebastian Huber writes: > On 09.04.24 14:10, Sam James wrote: >> Sebastian Huber writes: >> >>> On 20.11.23 10:56, Florian Weimer wrote: >>>> In the future, it may make sense to avoid cascading errors from >>>> the implicit declaration, especially its assumed int return type. >>>> This change here only changes the kind of the diagnostic, not >>>> its wording or consequences. >>> Maybe this change should be added to the GCC 14 release notes. >> Can you be more specific? Florian wrote about it in detail at >> https://gcc.gnu.org/gcc-14/porting_to.html#c. >> If you're referring specifically to the >> cascade-affecting-diagnostics, >> that change hasn't been made yet. >> What am I missing? > > I searched for "implicit-function-declaration" at > > https://gcc.gnu.org/gcc-14/changes.html > > and found nothing. All right, the > > https://gcc.gnu.org/gcc-14/porting_to.html > > has a description, but this is one step away from the release > notes. Maybe something like this could be added to the release notes: > I sympathise with the request. I note that we *did* mention -fno-common at https://gcc.gnu.org/gcc-10/changes.html and just gave more detail at https://gcc.gnu.org/gcc-10/porting_to.html. (I was pretty sure we hadn't until I checked.) Gerald? > diff --git a/htdocs/gcc-14/changes.html b/htdocs/gcc-14/changes.html > index ff69e859..90a14f37 100644 > --- a/htdocs/gcc-14/changes.html > +++ b/htdocs/gcc-14/changes.html > @@ -231,6 +231,17 @@ a work-in-progress.

> previous options -std=c2x, -std=gnu2x > and -Wc11-c2x-compat, which are deprecated but remain > supported. > +
  • The following warnings are now errors (see also > + Porting to GCC 14): > +
      > +
    • -Werror=declaration-missing-parameter-type
      • > +
    • -Werror=implicit-function-declaration
      • > +
    • -Werror=implicit-int
      • > +
    • -Werror=incompatible-pointer-types
      • > +
    • -Werror=int-conversion
      • > +
    • -Werror=return-mismatch
      • > +
    > +
    • > > >

    C++

    thanks, sam