Merge pull request #1719 from ethereum/fuzzerLine

Filter fuzzing errors by cause.

libdevcore/Exceptions.h

@@ -41,6 +41,9 @@ struct Exception: virtual std::exception, virtual boost::exception
 	Exception(std::string _message = std::string()): m_message(std::move(_message)) {}
 	const char* what() const noexcept override { return m_message.empty() ? std::exception::what() : m_message.c_str(); }
 
+	/// @returns "FileName:LineNumber" referring to the point where the exception was thrown.
+	std::string lineInfo() const;
+
 private:
 	std::string m_message;
 };

libsolidity/interface/Exceptions.cpp

@@ -23,6 +23,7 @@
 #include <libsolidity/interface/Exceptions.h>
 #include <libsolidity/interface/Utils.h>
 
+using namespace std;
 using namespace dev;
 using namespace dev::solidity;
 
@@ -56,3 +57,16 @@ Error::Error(Type _type): m_type(_type)
 		break;
 	}
 }
+
+string Exception::lineInfo() const
+{
+	char const* const* file = boost::get_error_info<boost::throw_file>(*this);
+	int const* line = boost::get_error_info<boost::throw_line>(*this);
+	string ret;
+	if (file)
+		ret += *file;
+	ret += ':';
+	if (line)
+		ret += boost::lexical_cast<string>(*line);
+	return ret;
+}

scripts/uniqueErrors.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+REPO=$(dirname $0)/..
+
+echo "Finding unique failures..."
+(
+for x in $*
+do
+  echo -n $x " # "
+  # This subshell is a workaround to prevent the shell from printing
+  # "Aborted"
+  ("$REPO"/build/test/solfuzzer < "$x" || true) 2>&1 | head -n 1
+done
+) | sort -u -t'#' -k 2

solc/jsonCompiler.cpp

@@ -184,15 +184,15 @@ string compile(StringMap const& _sources, bool _optimize, CStyleReadFileCallback
 	}
 	catch (CompilerError const& exception)
 	{
-		errors.append(formatError(exception, "Compiler error", scannerFromSourceName));
+		errors.append(formatError(exception, "Compiler error (" + exception.lineInfo() + ")", scannerFromSourceName));
 	}
 	catch (InternalCompilerError const& exception)
 	{
-		errors.append(formatError(exception, "Internal compiler error", scannerFromSourceName));
+		errors.append(formatError(exception, "Internal compiler error (" + exception.lineInfo() + ")", scannerFromSourceName));
 	}
 	catch (UnimplementedFeatureError const& exception)
 	{
-		errors.append(formatError(exception, "Unimplemented feature", scannerFromSourceName));
+		errors.append(formatError(exception, "Unimplemented feature (" + exception.lineInfo() + ")", scannerFromSourceName));
 	}
 	catch (Exception const& exception)
 	{

test/fuzzer.cpp

@@ -67,7 +67,6 @@ int main()
 		for (Json::Value const& error: outputJson["errors"])
 		{
 			string invalid = contains(error.asString(), vector<string>{
-				"Compiler error",
 				"Internal compiler error",
 				"Exception during compilation",
 				"Unknown exception during compilation",
@@ -78,7 +77,7 @@ int main()
 			});
 			if (!invalid.empty())
 			{
-				cout << "Invalid error: \"" << invalid << "\"" << endl;
+				cout << "Invalid error: \"" << error.asString() << "\"" << endl;
 				abort();
 			}
 		}