diff --git a/src/unicode.cpp b/src/unicode.cpp
index 7aca6544b..b6abc56d9 100644
--- a/src/unicode.cpp
+++ b/src/unicode.cpp
@@ -7,18 +7,26 @@
 
 #include <algorithm>
 #include <cassert>
+#include <codecvt>
 #include <cstddef>
 #include <cstdint>
+#include <locale>
 #include <map>
+
+// silence warnings triggered by a gcc bug when using sanitizers
+// ref: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105562#c21
+#pragma GCC diagnostic push
+#if defined __SANITIZE_ADDRESS__ && defined __OPTIMIZE__
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif
 #include <regex>
+#pragma GCC diagnostic pop
+
 #include <stdexcept>
 #include <string>
 #include <unordered_map>
-#include <unordered_set>
 #include <utility>
 #include <vector>
-#include <locale>
-#include <codecvt>
 
 size_t unicode_len_utf8(char src) {
     const size_t lookup[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 4 };