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   comp.lang.c      Meh, in C you gotta define EVERYTHING      243,242 messages   

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   Message 242,945 of 243,242   
   Michael S to James Russell Kuyper Jr.   
   Re: printf and time_t   
   11 Jan 26 13:20:15   
   
   From: already5chosen@yahoo.com   
      
   On Sat, 10 Jan 2026 22:02:03 -0500   
   "James Russell Kuyper Jr."  wrote:   
      
   > On 2026-01-09 07:18, Michael S wrote:   
   > > On Thu, 8 Jan 2026 19:31:13 -0500   
   > > "James Russell Kuyper Jr."  wrote:   
   > ...   
   > >> I'd have no problem with your approach if you hadn't falsely   
   > >> claimed that "It is correct on all platforms".   
   > >   
   > > Which I didn't.   
   >   
   > On 2026-01-07 19:38, Michael S wrote:   
   > ...   
   >  > No, it is correct on all implementation.   
   >   
      
   The quote is taken out of context.   
   The context was that on platforms that have properties (a) and (b) (see   
   below) printing variables declared as uint32_t via %u is probably UB   
   according to the Standard (I don't know for sure, however it is   
   probable), but it can't cause troubles with production C compiler. Or   
   with any C compiler that is made in intention of being used rather than   
   crafted to prove theoretical points.   
   Properties are:   
   a) uint32_t aliased to 'unsigned long'   
   b) 'unsigned int' is at least 32-bit wide.   
      
   I never claimed that it is good idea on targets with 'unsigned int'   
   that is narrower.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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