// Regression: new-form variadic `..name: []T` defined in an imported
// module is callable from another module without crashing LLVM emit.
//
// Before the fix in `resolveParamType` + `packVariadicCallArgs`,
// the new-form variadic's element type went through one extra
// `sliceOf` wrap (the helpers treated `..parts: []string` the same
// as the legacy `parts: ..string` and added a slice level on top
// of the already-declared slice). The double-wrapped `[][]T`
// signature mismatched what the call-site marshalling emitted as
// `[N x T]`, producing null/undef Refs that crashed
// `LLVMBuildExtractValue` inside `emitStrCmp` during emission.
//
// Today's stdlib `path_join` uses the new form
// (`(..parts: []string) -> string`); it lives in `modules/std.sx`
// and is called here from the test module. Two- and three-arg
// shapes must round-trip the slice through the function-call
// boundary and concatenate the parts with '/'. Empty join (no
// args) returns "".

#import "modules/std.sx";

main :: () -> s32 {
    print("{}\n", path_join());
    print("{}\n", path_join("a"));
    print("{}\n", path_join("a", "b"));
    print("{}\n", path_join("a", "b", "c", "d"));
    return 0;
}
