diff --git a/lib/astutils.cpp b/lib/astutils.cpp
index 82fcb2ecf3e..82b8a71946d 100644
--- a/lib/astutils.cpp
+++ b/lib/astutils.cpp
@@ -2246,7 +2246,7 @@ T* getTokenArgumentFunctionImpl(T* tok, int& argn)
             parent = parent->astParent();
 
         // passing variable to subfunction?
-        if (Token::Match(parent, "[*[(,{]"))
+        if (Token::Match(parent, "[*[(,{]") || Token::Match(parent, "%oror%|&&"))
             ;
         else if (Token::simpleMatch(parent, ":")) {
             while (Token::Match(parent, "[?:]"))
diff --git a/lib/checkstring.cpp b/lib/checkstring.cpp
index 6b230b1d979..34388ab1d2f 100644
--- a/lib/checkstring.cpp
+++ b/lib/checkstring.cpp
@@ -255,9 +255,13 @@ void CheckString::strPlusCharError(const Token *tok)
 static bool isMacroUsage(const Token* tok)
 {
     if (const Token* parent = tok->astParent()) {
+        while (parent && parent->isCast())
+            parent = parent->astParent();
+        if (!parent)
+            return false;
         if (parent->isExpandedMacro())
             return true;
-        if (parent->isUnaryOp("!")) {
+        if (parent->isUnaryOp("!") || parent->isComparisonOp()) {
             int argn{};
             const Token* ftok = getTokenArgumentFunction(parent, argn);
             if (ftok && !ftok->function())
diff --git a/test/teststring.cpp b/test/teststring.cpp
index e94f969034d..0ef10600797 100644
--- a/test/teststring.cpp
+++ b/test/teststring.cpp
@@ -799,6 +799,12 @@ class TestString : public TestFixture {
               "    return false;\n"
               "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        check("void f(const int* p, const int* q) {\n"
+              "    assert((p != NULL && q != NULL) || !\"abc\");\n"
+              "    ASSERT((void*)(\"def\") == 0);\n"
+              "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void deadStrcmp() {