Re: Function pointers to inline functions

[Shriramana Sharma <samjnaa@gmail.com>]

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I did some experimentation with pointers to inline and static inline 
functions. Please unpack the attachment and run the build script.

You will observe that the nm files only differ in the last four lines, 
and that too in only three of them.

The difference is that the executable built from the source with just 
"inline" has the functions square, cube and fourthpower marked as "W" 
which according to man:nm means that "The symbol is a weak symbol that 
has not been specifically tagged as a weak object symbol".

In the same place, the executable built from the source with "static 
inline" has the same functions marked "t" which denotes a local symbol 
in the code section.

I actually expected static inline to make the entries for the functions 
disappear but OK, I'm calling pointers to those functions, so they won't 
disappear. But at least shouldn't they become weak objects, like they do 
for "inline"?

Though I do not profess to fully understand what a weak object is, (upon 
which matter I would like to learn more) it sounds like an object which 
does not have a full separate existence. If an inline function is such a 
weak object, how come a static inline one is not tagged as one?

Thanks.

Shriramana Sharma.

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