From 6ee012d16bf8221c43c14b8d80a5d68ec0377b66 Mon Sep 17 00:00:00 2001
From: chrchr-github <78114321+chrchr-github@users.noreply.github.com>
Date: Tue, 7 Jul 2026 15:04:25 +0200
Subject: [PATCH 1/3] Update symboldatabase.cpp

---
 lib/symboldatabase.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/symboldatabase.cpp b/lib/symboldatabase.cpp
index b687c9f77a4..fec7a06d612 100644
--- a/lib/symboldatabase.cpp
+++ b/lib/symboldatabase.cpp
@@ -138,8 +138,13 @@ const Token* SymbolDatabase::isEnumDefinition(const Token* tok)
     if (tok->str() == "{")
         return tok;
     tok = tok->next(); // skip ':'
-    while (Token::Match(tok, "%name%|::"))
+    bool hasType = false;
+    while (Token::Match(tok, "%name%|::")) {
+        hasType = true;
         tok = tok->next();
+    }
+    if (!hasType)
+        throw InternalError(tok, "SymbolDatabase bailout; invalid enum", InternalError::SYNTAX);
     return Token::simpleMatch(tok, "{") ? tok : nullptr;
 }
 

From 7370f1a95ef66be51c952dc43d3b569d3bccedc8 Mon Sep 17 00:00:00 2001
From: chrchr-github <78114321+chrchr-github@users.noreply.github.com>
Date: Tue, 7 Jul 2026 15:05:35 +0200
Subject: [PATCH 2/3] Create crash-def181ea7bf444e7a9d0f85b3ad264c31a0b90e4

---
 .../fuzz-crash/crash-def181ea7bf444e7a9d0f85b3ad264c31a0b90e4    | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 test/cli/fuzz-crash/crash-def181ea7bf444e7a9d0f85b3ad264c31a0b90e4

diff --git a/test/cli/fuzz-crash/crash-def181ea7bf444e7a9d0f85b3ad264c31a0b90e4 b/test/cli/fuzz-crash/crash-def181ea7bf444e7a9d0f85b3ad264c31a0b90e4
new file mode 100644
index 00000000000..3b609c62362
--- /dev/null
+++ b/test/cli/fuzz-crash/crash-def181ea7bf444e7a9d0f85b3ad264c31a0b90e4
@@ -0,0 +1 @@
+enum
f:{};

From f63c1c0219f901a7aa2cb13295231cb27a815168 Mon Sep 17 00:00:00 2001
From: chrchr-github <78114321+chrchr-github@users.noreply.github.com>
Date: Thu, 9 Jul 2026 08:36:20 +0200
Subject: [PATCH 3/3] Update symboldatabase.cpp

---
 lib/symboldatabase.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/symboldatabase.cpp b/lib/symboldatabase.cpp
index fec7a06d612..6e6a98ee81e 100644
--- a/lib/symboldatabase.cpp
+++ b/lib/symboldatabase.cpp
@@ -140,7 +140,8 @@ const Token* SymbolDatabase::isEnumDefinition(const Token* tok)
     tok = tok->next(); // skip ':'
     bool hasType = false;
     while (Token::Match(tok, "%name%|::")) {
-        hasType = true;
+        if (tok->isName())
+            hasType = true;
         tok = tok->next();
     }
     if (!hasType)