On 11/08/16 13:15, Robert Story wrote: > On Tue, 8 Nov 2016 13:02:51 -0800 Bart wrote: > BVA> On 11/08/2016 12:17 PM, Robert Story wrote: > BVA> > Static buffers/arrays should be initialized before use. If > BVA> > you find any that are used before they are initialized, > BVA> > please file a bug and, if you can, submit a patch to fix > BVA> > them. > BVA> > BVA> Hello Robert, > BVA> > BVA> A quote from the C language standard (ISO/IEC 9899:201x): > BVA> "6.9.2 External object definitions. [...]" > BVA> > BVA> In other words, any toolchain that does not zero-initialize > BVA> static variables violates the C standard. I don't think we > BVA> should care about broken toolchains. > > Is that new in 201x? How far back does this go in the standards? > It's been a while, but the last time we discussed it, I believe the > decision was made to support C89 an later. I might have missed a > recent decision if that has changed, and of course we can revisit > that if enough folks agree we should.
Hello Robert, That requirement is not new. This is what I found in my copy of the K&R C book (2nd edition): "In the absence of explicit initialization, external and static variables are guaranteed to be initialized to zero; automatic and register variables have undefined (i.e., garbage) initial values." Appendix C (Summary of Changes) does not mention anything about static variables so I think this requirement exists since the very beginning of the C programming language. Bart. ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Net-snmp-coders mailing list Net-snmp-coders@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
