diff --git a/lib/fuzzer.zig b/lib/fuzzer.zig
index e69de29bb2..d48a4993be 100644
--- a/lib/fuzzer.zig
+++ b/lib/fuzzer.zig
@@ -0,0 +1,11 @@
+const std = @import("std");
+
+export threadlocal var __sancov_lowest_stack: usize = 0;
+
+export fn __sanitizer_cov_8bit_counters_init(start: [*]u8, stop: [*]u8) void {
+    std.debug.print("__sanitizer_cov_8bit_counters_init start={*}, stop={*}\n", .{ start, stop });
+}
+
+export fn __sanitizer_cov_pcs_init(pcs_beg: [*]const usize, pcs_end: [*]const usize) void {
+    std.debug.print("__sanitizer_cov_pcs_init pcs_beg={*}, pcs_end={*}\n", .{ pcs_beg, pcs_end });
+}