ccc

1 files changed, 2 insertions, 0 deletions

diff --git a/compat/format.hpp b/compat/format.hpp
index 9a61dd96..741b35bd 100644
--- a/compat/format.hpp
+++ b/compat/format.hpp
@@ -1,4 +1,5 @@
 #pragma once
+#include "compat/assert.hpp"
 #include <fmt/core.h>
 #include <fmt/compile.h>
 #include <Corrade/Containers/StringView.h>
@@ -54,6 +55,7 @@ size_t snformat(char(&buf)[N], Fmt&& fmt, Xs&&... args)
     constexpr size_t n = N > 0 ? N - 1 : 0;
     auto result = fmt::format_to_n(buf, n, Corrade::Utility::forward<Fmt>(fmt), Corrade::Utility::forward<Xs>(args)...);
     const auto len = Utility::min(n, result.size);
+    fm_assert(len > 0);
     if constexpr(N > 0)
         buf[len] = '\0';
     return len;