Force function signatures to initialize on Emscripten target.

Author: jjrv

include/nbind/signature/BaseSignature.h

@@ -15,10 +15,11 @@ class BaseSignature {
 
 	// Type of the signature.
 	// Determines the actual signature class of each instance.
-	// These must match JavaScript enum SignatureType in enums.ts
+	// These must match JavaScript enum SignatureType in common.ts
 
 	enum class SignatureType: unsigned int {
-		func = 0,
+		none = 0,
+		func,
 		method,
 		getter,
 		setter,
@@ -92,6 +93,10 @@ class TemplatedBaseSignature : public BaseSignature {
 	static Signature &getInstance() {
 		// Linkage for a singleton instance of each templated class.
 		static Signature instance;
+
+		// The constructor should have been called, but sometimes it wasn't!
+		if(instance.getType() == SignatureType :: none) new (&instance) Signature();
+
 		return(instance);
 	}
 

src/common.ts

@@ -4,7 +4,8 @@
 // These must match C++ enum SignatureType in BaseSignature.h
 
 export const enum SignatureType {
-	func = 0,
+	none = 0,
+	func,
 	method,
 	getter,
 	setter,

src/em/Binding.cc

@@ -223,6 +223,11 @@ static void initModule() {
 			}
 
 			switch(signature->getType()) {
+				case SignatureType :: none:
+
+					// Impossible!
+					abort();
+
 				case SignatureType :: method:
 				case SignatureType :: getter:
 				case SignatureType :: setter: