// Comptime host-FFI with a SLICE argument: a `#run` calling a libc function whose
// parameter is a `[:0]u8` (a `{ptr,len}` fat pointer), not a bare `cstring`. The VM
// marshals the fat pointer to a NUL-terminated `char*` before the call (Phase 4D.2),
// mirroring the legacy interpreter. (A bare `cstring` arg already passes as a word.)
#import "modules/std.sx";

strlen :: (s: [:0]u8) -> usize extern libc;

LEN :: #run strlen("hello, world");

main :: () -> i32 {
    print("len={}\n", LEN);
    return 0;
}