From 9b25048fc6af42bfd39fa6ead44f35d93e125fcc Mon Sep 17 00:00:00 2001
From: Jan Travnicek <Jan.Travnicek@fit.cvut.cz>
Date: Thu, 18 Oct 2018 19:07:22 +0200
Subject: [PATCH] fix segfault on unavailable previous result use
---
alib2cli/src/ast/statements/PreviousResultStatement.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/alib2cli/src/ast/statements/PreviousResultStatement.h b/alib2cli/src/ast/statements/PreviousResultStatement.h
index a6c1e9c3a8..f55f36410c 100644
--- a/alib2cli/src/ast/statements/PreviousResultStatement.h
+++ b/alib2cli/src/ast/statements/PreviousResultStatement.h
@@ -9,6 +9,8 @@ class PreviousResultStatement final : public Statement {
public:
virtual std::shared_ptr < abstraction::OperationAbstraction > translateAndEval ( const std::shared_ptr < abstraction::OperationAbstraction > & prev, Environment & ) const override {
+ if ( prev == nullptr )
+ throw std::invalid_argument ( "There is no previous result to use." );
return prev;
}
--
GitLab