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char unsigned char and packed structs (1 viewing) (1) Guests
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TOPIC: char unsigned char and packed structs
#2948
<i>vipps...@gmail.com</i> (Visitor)
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char unsigned char and packed structs  
Hello comp.std.c Why isn't there a way to tell the compiler to pack the structure? (pack: no padding bytes, sizeof struct equal to sum of sizeof members) You might argue this is provided by most implementations and not really an issue, but way I see it, there's no reason not to have such feature, unless I'm mistaken about the following: (excuse the terminology) 1) an _object_ is really just multiple of unsigned char. (that's what sizeof reports) 2) it's possible to treat any unsigned char m[sizeof(T)] as *(T*)m
 
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#2949
Keith Thompson (Visitor)
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char unsigned char and packed structs  
Hello comp.std.c Why isn't there a way to tell the compiler to pack the structure? (pack: no padding bytes, sizeof struct equal to sum of sizeof members) You might argue this is provided by most implementations and not really an issue, but way I see it, there's no reason not to have such feature, unless I'm mistaken about the following: (excuse the terminology) 1) an _object_ is really just multiple of unsigned char. (that's what sizeof reports) 2) it's possible to treat any unsigned char m[sizeof(T)] as *(T*)m
 
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#2950
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char unsigned char and packed structs  
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it writes: 1) an _object_ is really just multiple of unsigned char. (that's what sizeof reports) 2) it's possible to treat any unsigned char m[sizeof(T)] as *(T*)m
 
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#2951
Keith Thompson (Visitor)
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char unsigned char and packed structs  
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it writes: 1) an _object_ is really just multiple of unsigned char. (that's what sizeof reports) 2) it's possible to treat any unsigned char m[sizeof(T)] as *(T*)m
 
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#2952
<i>vipps...@gmail.com</i> (Visitor)
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char unsigned char and packed structs  
This could certainly be defined, but it would be a fairly major change to the language
 
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#2953
Jack Klein (Visitor)
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char unsigned char and packed structs  
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it writes: 1) an _object_ is really just multiple of unsigned char. (that's what sizeof reports) 2) it's possible to treat any unsigned char m[sizeof(T)] as *(T*)m
 
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