Index: COFF/Symbols.h
===================================================================
--- COFF/Symbols.h
+++ COFF/Symbols.h
@@ -421,8 +421,8 @@
   static_assert(sizeof(T) <= sizeof(SymbolUnion), "Symbol too small");
   static_assert(alignof(T) <= alignof(SymbolUnion),
                 "SymbolUnion not aligned enough");
-  assert(static_cast<Symbol *>(static_cast<T *>(nullptr)) == nullptr &&
-         "Not a Symbol");
+  static_assert(static_cast<Symbol *>(static_cast<T *>(nullptr)) == nullptr,
+                "Not a Symbol");
   new (S) T(std::forward<ArgT>(Arg)...);
 }
 } // namespace coff
Index: ELF/Symbols.h
===================================================================
--- ELF/Symbols.h
+++ ELF/Symbols.h
@@ -355,8 +355,8 @@
   static_assert(sizeof(T) <= sizeof(SymbolUnion), "SymbolUnion too small");
   static_assert(alignof(T) <= alignof(SymbolUnion),
                 "SymbolUnion not aligned enough");
-  assert(static_cast<Symbol *>(static_cast<T *>(nullptr)) == nullptr &&
-         "Not a Symbol");
+  static_assert(static_cast<Symbol *>(static_cast<T *>(nullptr)) == nullptr,
+                "Not a Symbol");
 
   Symbol Sym = *S;
 
Index: wasm/Symbols.h
===================================================================
--- wasm/Symbols.h
+++ wasm/Symbols.h
@@ -242,8 +242,8 @@
   static_assert(sizeof(T) <= sizeof(SymbolUnion), "Symbol too small");
   static_assert(alignof(T) <= alignof(SymbolUnion),
                 "SymbolUnion not aligned enough");
-  assert(static_cast<Symbol *>(static_cast<T *>(nullptr)) == nullptr &&
-         "Not a Symbol");
+  static_assert(static_cast<Symbol *>(static_cast<T *>(nullptr)) == nullptr,
+                "Not a Symbol");
   return new (S) T(std::forward<ArgT>(Arg)...);
 }