From 6456a6880595d9d4b81d8bfca0f889297d11e1be Mon Sep 17 00:00:00 2001
From: WerWolv <werwolv98@gmail.com>
Date: Sat, 5 Dec 2020 10:36:30 +0100
Subject: [PATCH] Fixed crash when array size variable has a value of zero

---
 source/lang/evaluator.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/source/lang/evaluator.cpp b/source/lang/evaluator.cpp
index f5241c621..d6bc05a74 100644
--- a/source/lang/evaluator.cpp
+++ b/source/lang/evaluator.cpp
@@ -159,6 +159,11 @@ namespace hex::lang {
                     return { nullptr, 0 };
                 }
 
+                if (arraySize.value() == 0) {
+                    this->m_error = { varDeclNode->getLineNumber(), hex::format("Value of '%s' is zero", member->getArraySizeVariable().value().c_str()) };
+                    return { nullptr, 0 };
+                }
+
                 ASTNodeVariableDecl *processedMember = new ASTNodeVariableDecl(member->getLineNumber(), member->getVariableType(), member->getVariableName(), member->getCustomVariableTypeName(), member->getOffset(), arraySize.value());
 
                 std::tie(pattern, memberSize) = this->createArrayPattern(processedMember, memberOffset);
@@ -220,8 +225,6 @@ namespace hex::lang {
     std::pair<PatternData*, size_t> Evaluator::createArrayPattern(ASTNodeVariableDecl *varDeclNode, u64 offset) {
         std::vector<PatternData*> entries;
 
-        auto arraySizeVariable = varDeclNode->getArraySizeVariable();
-
         size_t arrayOffset = 0;
         std::optional<u32> arrayColor;
         for (u32 i = 0; i < varDeclNode->getArraySize(); i++) {