From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11037 invoked by alias); 15 Mar 2017 18:16:49 -0000 Mailing-List: contact newlib-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: newlib-owner@sourceware.org Received: (qmail 11022 invoked by uid 89); 15 Mar 2017 18:16:48 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-0.9 required=5.0 tests=AWL,BAYES_00,KAM_LAZY_DOMAIN_SECURITY,RP_MATCHES_RCVD autolearn=no version=3.3.2 spammy=H*r:ip*192.168.2.2, cid, Hx-languages-length:1658, huntsville X-HELO: OARmail.OARCORP.com Received: from oarmail.oarcorp.com (HELO OARmail.OARCORP.com) (67.63.146.244) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 15 Mar 2017 18:16:46 +0000 Received: from [192.168.1.175] (192.168.1.175) by OARmail.OARCORP.com (192.168.2.2) with Microsoft SMTP Server (TLS) id 8.3.389.2; Wed, 15 Mar 2017 13:16:46 -0500 To: "newlib@sourceware.org" From: Joel Sherrill Subject: Use of initialized variable in strtod.c Message-ID: <788987e9-9b0d-4bfd-b40a-38c219bd8a17@oarcorp.com> Date: Wed, 15 Mar 2017 18:16:00 -0000 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit X-SW-Source: 2017/txt/msg00175.txt.bz2 Hi I have looked at this one enough to believe it is a real issue but have no idea what the proper solution is. Maybe someone is more familiar with this routine can help. This looks like it was introduced in 2006 by Jeff Johnston but I don't expect him to remember it. :) https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;a=commit;f=newlib/libc/stdlib/strtod.c;h=f489b5943c8f8655b0a3caddd38114111576ab35 2006-06-22 Jeff Johnston * libc/stdlib/Makefile.am: Add new gdtoa routines. * libc/stdlib/Makefile.in: Regenerated. * libc/stdlib/gd_qnan.h: New file. * libc/stdlib/gdtoa-gethex.c: Ditto. * libc/stdlib/gdtoa-hexnan.c: Ditto. * libc/stdlib/gdtoa.h: Ditto. * libc/stdlib/mprec.c: Add new helper routines needed by the new gdtoa code. * libc/stdlib/mprec.h: Integrate some defines and prototypes used by gdtoa routines here. * libc/stdlib/strtod.c: Rebased on David M. Gay's gdtoa-strtod.c which adds C99 support such as nan, inf, and hexadecimal input format. Basically if (bb) is false, then bits is not set and it is used as input to ULtod. 334 if (bb) { 335 copybits(bits, fpi.nbits, bb); 336 Bfree(ptr,bb); 337 } CID 175379 (#1 of 1): Uninitialized scalar variable (UNINIT) 10. uninit_use_in_call: Using uninitialized element of array bits when calling ULtod. [show details] 338 ULtod(rv.i, bits, exp, i); Hopefully someone has some insight on how to fix this. Thanks. -- Joel Sherrill, Ph.D. Director of Research & Development joel.sherrill@OARcorp.com On-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35806 Support Available (256) 722-9985