test: prove package initialization semantics

test/wcc/200_parse.c

@@ -140,6 +140,7 @@ main(void)
 		"import io;",
 		"import io.bufio;",
 		"import stable io.bufio;",
+		"import _ io.bufio;",
 		"def MAX: i32 = 4096;",
 		"export def MAX: i32 = 4096;",
 		"type point = struct { x: i32, y: i32 };",
@@ -149,6 +150,7 @@ main(void)
 		"type arr = [16]u8;",
 
 		"fn nop() void = {};",
+		"fn init() void = {}; fn init() void = {};",
 		"export fn id(x: i32) i32 = { return x; };",
 		"fn add(a: i32, b: i32) i32 = { return a + b; };",
 		"@symbol(\"malloc\") fn cmalloc(n: u64) *void;",