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Received: from 75-166-229-74.hlrn.qwest.net ([75.166.229.74]:54580 helo=bapiya) by box5379.bluehost.com with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.100.1) (envelope-from ) id 1xBv8Q-00000002vzL-400f; Wed, 30 Sep 2026 08:18:15 -0600 From: Tom Tromey To: Jan Vrany Cc: gdb-patches@sourceware.org Subject: Re: [PATCH] gdb/python: prevent conversion from pointer to bool in to_python() In-Reply-To: <20260930093550.1288712-1-jan@vrany.io> (Jan Vrany's message of "Wed, 30 Sep 2026 09:36:09 +0000") References: <20260930093550.1288712-1-jan@vrany.io> X-Attribution: Tom Date: Wed, 30 Sep 2026 08:18:13 -0600 Message-ID: <87wls2hlga.fsf@tromey.com> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - box5379.bluehost.com X-AntiAbuse: Original Domain - sourceware.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tromey.com X-BWhitelist: no X-Source-IP: 75.166.229.74 X-Source-L: No X-Exim-ID: 1xBv8Q-00000002vzL-400f X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 75-166-229-74.hlrn.qwest.net (bapiya) [75.166.229.74]:54580 X-Source-Auth: tom+tromey.com X-Email-Count: 8 X-Org: HG=bhshared;ORG=bluehost; X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfFFutgso6htbjMM9XjV/ONzqkxfwtPJXI+PkTs46j/+of1faNPwl60t0ZTNc+xOdOLtiwpAsMpiiPekskX93uGZWDnQSIr/k/ZPGAorbopn0JHOUryfa RzIEGTgZAJBlD7jqIh8WyEIgL9D0/6N0IB17AFHJEspdEYO137oPhkNFTNtirqt7xaYdQUTkKQ4Y+pS/waNntFfrPxLYeTmeu50= X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gdb-patches-bounces~public-inbox=simark.ca@sourceware.org >>>>> "Jan" =3D=3D Jan Vrany writes: Jan> While converting some Python code to use new "safety" APIs I realized Jan> that calling to_python() with a pointer like (for example): Jan> to_python (symtab->compunit ().objfile ()) Jan> calls to_python(bool) which is unlikely to be what the user wants. Jan> This commit changes the code to make it a compile-time error. Jan> After trying several approaches, the least intrusive seemed to be Jan> handling bool specially in to_python() template for integral types and Jan> removing to_python(bool) altogether. This way, the above example fails Jan> with: Jan> error: no matching function for call to =E2=80=98to_python(objfile= *)=E2=80=99 Reading this made me wonder if we'd prefer a template function that accepts pointer types but then causes a compile error. But I think this approach is fine too. Approved-By: Tom Tromey Tom