From 3246d0f9a907774674e7e7d4ebd6314772cf7adc Mon Sep 17 00:00:00 2001
From: Alex Beregszaszi <alex@rtfs.hu>
Date: Mon, 9 Nov 2020 18:11:44 +0000
Subject: [PATCH] [solc] Handle exceptions in AssemblyStack.translate()
 gracefully

---
 solc/CommandLineInterface.cpp | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/solc/CommandLineInterface.cpp b/solc/CommandLineInterface.cpp
index 1d8e24b7e..42fe58a3b 100644
--- a/solc/CommandLineInterface.cpp
+++ b/solc/CommandLineInterface.cpp
@@ -1883,8 +1883,29 @@ bool CommandLineInterface::assemble(
 
 		if (_language != yul::AssemblyStack::Language::Ewasm && _targetMachine == yul::AssemblyStack::Machine::Ewasm)
 		{
-			stack.translate(yul::AssemblyStack::Language::Ewasm);
-			stack.optimize();
+			try
+			{
+				stack.translate(yul::AssemblyStack::Language::Ewasm);
+				stack.optimize();
+			}
+			catch (Exception const& _exception)
+			{
+				serr() << "Exception in assembler: " << boost::diagnostic_information(_exception) << endl;
+				return false;
+			}
+			catch (std::exception const& _e)
+			{
+				serr() <<
+					"Unknown exception during compilation" <<
+					(_e.what() ? ": " + string(_e.what()) : ".") <<
+					endl;
+				return false;
+			}
+			catch (...)
+			{
+				serr() << "Unknown exception in assembler." << endl;
+				return false;
+			}
 
 			sout() << endl << "==========================" << endl;
 			sout() << endl << "Translated source:" << endl;