1 files changed, 19 insertions, 3 deletions
diff --git a/libsolidity/interface/StandardCompiler.cpp b/libsolidity/interface/StandardCompiler.cpp
index fb973d51..8c64c164 100644
--- a/libsolidity/interface/StandardCompiler.cpp
+++ b/libsolidity/interface/StandardCompiler.cpp
@@ -327,13 +327,29 @@ Json::Value StandardCompiler::compileInternal(Json::Value const& _input)
 	m_compilerStack.setOptimiserSettings(optimize, optimizeRuns);
 
 	map<string, h160> libraries;
-	Json::Value jsonLibraries = settings.get("libraries", Json::Value());
+	Json::Value jsonLibraries = settings.get("libraries", Json::Value(Json::objectValue));
+	if (!jsonLibraries.isObject())
+		return formatFatalError("JSONError", "\"libraries\" is not a JSON object.");
 	for (auto const& sourceName: jsonLibraries.getMemberNames())
 	{
 		auto const& jsonSourceName = jsonLibraries[sourceName];
+		if (!jsonSourceName.isObject())
+			return formatFatalError("JSONError", "library entry is not a JSON object.");
 		for (auto const& library: jsonSourceName.getMemberNames())
-			// @TODO use libraries only for the given source
-			libraries[library] = h160(jsonSourceName[library].asString());
+		{
+			try
+			{
+				// @TODO use libraries only for the given source
+				libraries[library] = h160(jsonSourceName[library].asString());
+			}
+			catch (dev::BadHexCharacter)
+			{
+				return formatFatalError(
+					"JSONError",
+					"Invalid library address (\"" + jsonSourceName[library].asString() + "\") supplied."
+				);
+			}
+		}
 	}
 	m_compilerStack.setLibraries(libraries);