From 30426ac58f68502197a758ad132ac67b1d352974 Mon Sep 17 00:00:00 2001
From: Roy Qu <royqh1979@gmail.com>
Date: Mon, 7 Aug 2023 18:28:30 +0800
Subject: [PATCH] Crash when enum value is a symbol that not valid.

---
 RedPandaIDE/parser/cppparser.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/RedPandaIDE/parser/cppparser.cpp b/RedPandaIDE/parser/cppparser.cpp
index 03fba771..5d7361b4 100644
--- a/RedPandaIDE/parser/cppparser.cpp
+++ b/RedPandaIDE/parser/cppparser.cpp
@@ -1847,12 +1847,14 @@ int CppParser::evaluateConstExprTerm(int endIndex, bool &ok)
                || mTokenizer[mIndex]->text=="::") {
         QString s = mTokenizer[mIndex]->text;
         QSet<QString> searched;
+        bool isGlobal = false;
         mIndex++;
         if (s=="::") {
             if (mIndex>=endIndex || !isIdentChar(mTokenizer[mIndex]->text[0])) {
                 ok=false;
                 return result;
             }
+            isGlobal = true;
             s+=mTokenizer[mIndex]->text;
             mIndex++;
         }
@@ -1869,7 +1871,10 @@ int CppParser::evaluateConstExprTerm(int endIndex, bool &ok)
                 return result;
             }
             searched.insert(s);
-            PStatement statement = doFindStatement(s);
+            PStatement statement = doFindStatementOf(
+                        mCurrentFile,s,
+                        isGlobal?PStatement():getCurrentScope());
+
             if (!statement) {
                 ok=false;
                 return result;
@@ -1877,6 +1882,11 @@ int CppParser::evaluateConstExprTerm(int endIndex, bool &ok)
             if (statement->kind == StatementKind::skEnum) {
                 result = statement->value.toInt(&ok);
                 break;
+            } else if (statement->kind == StatementKind::skAlias) {
+                s = statement->value;
+            } else  {
+                ok=false;
+                return result;
             }
         }
     } else {