invalid code generated for extern const

[arnetheduck]

Header:

extern const int xxx_symbol;

Command:

$ c2nim --version
0.9.18

$ c2nim --header --importc --nep1 test.h

Output:

let xxxSymbol* {.header: "test.h".}: cint

several problems with the generated definition:

• it's missing importc: "xxx_symbol"
• it should be a var (because let needs an initializer which in this case is not provided in nim (it's done in the C library typically)

Of course, the main issue here is that Nim has no feature that expresses the concept of an extern const in general, so var is the closest that we can get.

[Araq]

let x {.importc.} <init missing> is Nim's notion of "extern const". IIRC this was added for this reason.

[arnetheduck]

is Nim's notion of "extern const"

right, I was testing this with nim 1.2 where it's not allowed - it's also still missing the actual importc