From 7e018179a185fa4291848e9c1e188456b0666ced Mon Sep 17 00:00:00 2001
From: Alex Beregszaszi <alex@rtfs.hu>
Date: Mon, 14 Sep 2020 14:33:57 +0100
Subject: [PATCH] Turn if statement into assertion

---
 libsolidity/ast/AST.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/libsolidity/ast/AST.cpp b/libsolidity/ast/AST.cpp
index cac28eac0..37ab84075 100644
--- a/libsolidity/ast/AST.cpp
+++ b/libsolidity/ast/AST.cpp
@@ -191,9 +191,7 @@ vector<pair<util::FixedHash<4>, FunctionTypePointer>> const& ContractDefinition:
 					functions.push_back(TypeProvider::function(*v));
 			for (FunctionTypePointer const& fun: functions)
 			{
-				if (!fun->interfaceFunctionType())
-					// Fails hopefully because we already registered the error
-					continue;
+				solAssert(fun->interfaceFunctionType(), "");
 				string functionSignature = fun->externalSignature();
 				if (signaturesSeen.count(functionSignature) == 0)
 				{