From 6f4ce486a219efec0f3f7f6f29ac585b4b65745f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Marjam=C3=A4ki?= <daniel.marjamaki@gmail.com>
Date: Wed, 8 Sep 2021 06:56:45 +0200
Subject: [PATCH] Fix FP in constVariable

---
 lib/astutils.cpp   | 2 +-
 test/testother.cpp | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/astutils.cpp b/lib/astutils.cpp
index f277ab488..1a77296ee 100644
--- a/lib/astutils.cpp
+++ b/lib/astutils.cpp
@@ -1903,7 +1903,7 @@ bool isVariableChangedByFunctionCall(const Token *tok, int indirect, const Setti
         return false; // not a function => variable not changed
     if (Token::simpleMatch(tok, "{") && isTrivialConstructor(tok))
         return false;
-    if (tok->isKeyword() && !isCPPCastKeyword(tok))
+    if (tok->isKeyword() && !isCPPCastKeyword(tok) && tok->str().compare(0,8,"operator") != 0)
         return false;
     const Token * parenTok = tok->next();
     if (Token::simpleMatch(parenTok, "<") && parenTok->link())
diff --git a/test/testother.cpp b/test/testother.cpp
index 1653e712e..44406a9c3 100644
--- a/test/testother.cpp
+++ b/test/testother.cpp
@@ -1801,6 +1801,13 @@ private:
             check(code, &s64);
             ASSERT_EQUALS("", errout.str());
         }
+
+        check("Writer* getWriter();\n"
+              "\n"
+              "void foo(Buffer& buffer) {\n"
+              "    getWriter()->operator<<(buffer);\n"
+              "}");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void passedByValue_externC() {