cgen: allow for @[c_extern] fn C.somename(param1 int, param2 &char) &char

[spytheman]

• cgen: allow for @[c_extern] fn C.somename(param1 int, param2 &char) &char
• add a test .vv/.c.must_have pair

[medvednikov]

Can you document the new attribute please?

[spytheman]

It is not a new attribute, it is already documented for usage with C globals.

I would like to avoid documenting its usage with C functions for now, until it is used a bit more in the field by people with actual projects, that need it (see the messages by @raojm in #compiler-and-vlib-dev on Discord), and bugs related to it fixed.