c - extern keyword with function names -

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i know static keyword makes c function/variable file-scoped. , i've read if want make variable global scope (accessed more 1 file), should do:

in .c file:

int my_global_var;  // main()....

in .h file:

extern int my_global_var;

so, 1 include .h file able reference my_global_var externed.

and read required functions using gcc 4.x , don't extern function in .h file , other programs can link it.

so, question is...

is behavior of non-static function linkage default or should extern non-static functions adhere standard??

from standard, 6.2.2

5 if declaration of identifier function has no storage-class specifier, linkage determined if declared storage-class specifier extern. if declaration of identifier object has file scope , no storage-class specifier, linkage external.

meaning, it's extern default.


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