> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:ibm-m...@bama.ua.edu] On Behalf Of Bernd Oppolzer > Sent: Tuesday, May 18, 2010 2:27 PM > To: IBM-MAIN@bama.ua.edu > Subject: Re: partially initialized structures in C > > Yes. I personally use memset all the time. But this is not the point. > > We have hundreds of programs in production that use this kind of > initialization. > And we don't want to check and change them all. If the IBM people are > wrong in > their interpretation of the C language definition, they > should fix their > compiler, > and we would simply recompile all our programs without having > to examine > them and to lookup all such declarations and initializations, > which can > be costly, > given some 2000 programs and 7 millions lines of source code. > > Unfortunately, I myself have only written some dozens of these 2000 C > programs :-) > (and many of these have gone through other hands through the past 15 > years). > > Kind regards > > Bernd
Well, from my reading of the IBM manual, it specifically states that: <quote> You do not have to initialize all members of a structure or union; the initial value of uninitialized structure members depends on the storage class associated with the structure or union variable. In a structure declared as static, any members that are not initialized are implicitly initialized to zero of the appropriate type; the members of a structure with automatic storage have no default initialization. </quote> I think this means that it is WAD (or BAD - Broken As Designed). You'd need IBM to agree to fix the compiler. I can't tell because I don't have a copy of the actual ANSI C reference. Oh, are you running with C99? I.e. LANGLVL(EXTENDED)? I don't know if that would make a difference or not. I don't have the C compiler here. -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * (817)-961-6183 cell john.mck...@healthmarkets.com * www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
