entity: fix build on unpatched StringView

1 files changed, 8 insertions, 1 deletions

diff --git a/entity/name-of.hpp b/entity/name-of.hpp
index 81feee19..42674a19 100644
--- a/entity/name-of.hpp
+++ b/entity/name-of.hpp
@@ -11,7 +11,14 @@ template<typename T>
 static constexpr auto mangled_name() { // NOLINT(bugprone-reserved-identifier)
     using namespace Corrade::Containers;
     using SVF = StringViewFlag;
-    return StringView { FM_PRETTY_FUNCTION, SVF::Global|SVF::NullTerminated };
+    constexpr auto my_strlen = [](const char* str) constexpr -> size_t {
+        const char* start = str;
+        for (; *str; str++)
+            ;
+        return (size_t)(str - start);
+    };
+    const char* str = FM_PRETTY_FUNCTION;
+    return StringView { str, my_strlen(str), SVF::Global|SVF::NullTerminated };
 }
 
 template<typename T> constexpr inline auto name_of = mangled_name<T>();