diff --git a/lib/astutils.cpp b/lib/astutils.cpp
index c3d70d0cfc0..268b9535b1e 100644
--- a/lib/astutils.cpp
+++ b/lib/astutils.cpp
@@ -3033,7 +3033,7 @@ bool isLikelyStreamRead(bool cpp, const Token *op)
     const Token *parent = op;
     while (parent->astParent() && parent->astParent()->str() == op->str())
         parent = parent->astParent();
-    if (parent->astParent() && !Token::Match(parent->astParent(), "%oror%|&&|(|,|.|!|;"))
+    if (parent->astParent() && !Token::Match(parent->astParent(), "%oror%|&&|(|,|.|!|;|return"))
         return false;
     if (op->str() == "&" && parent->astParent())
         return false;
diff --git a/lib/checkstl.cpp b/lib/checkstl.cpp
index ceec3cd9b00..ede7460bc1b 100644
--- a/lib/checkstl.cpp
+++ b/lib/checkstl.cpp
@@ -1992,7 +1992,7 @@ void CheckStl::string_c_str()
                         }
                     }
                 }
-            } else if (printPerformance && Token::Match(tok, "%var% (|{ %var% . c_str|data ( )") &&
+            } else if (printPerformance && Token::Match(tok, "%var% (|{ %var% . c_str|data ( ) !!,") &&
                        tok->variable() && (tok->variable()->isStlStringType() || tok->variable()->isStlStringViewType()) &&
                        tok->tokAt(2)->variable() && tok->tokAt(2)->variable()->isStlStringType()) {
                 string_c_strConstructor(tok, tok->variable()->getTypeName());
diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 21efa72c1b3..9b5c4f07850 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -8058,7 +8058,7 @@ void Tokenizer::reportUnknownMacros() const
 
     // Report unknown macros before } "{ .. if (x) MACRO }"
     for (const Token *tok = tokens(); tok; tok = tok->next()) {
-        if (Token::Match(tok, ")|; %name% }")) {
+        if (Token::Match(tok, ")|; %name% } !!)")) {
             const Token* prev = tok->linkAt(2);
             while (Token::simpleMatch(prev, "{"))
                 prev = prev->previous();
diff --git a/test/testother.cpp b/test/testother.cpp
index 33fe01276e1..1c0fb8b9fdd 100644
--- a/test/testother.cpp
+++ b/test/testother.cpp
@@ -3270,6 +3270,12 @@ class TestOther : public TestFixture {
               "    const int* p = s.g<int>();\n"
               "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        check("struct S { int x; };\n" // #11818
+              "std::istream& f(std::istream& is, S& s) {\n"
+              "    return is >> s.x;\n"
+              "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void constParameterCallback() {
diff --git a/test/teststl.cpp b/test/teststl.cpp
index 77dc8db6bb8..0765d2271dc 100644
--- a/test/teststl.cpp
+++ b/test/teststl.cpp
@@ -4256,6 +4256,11 @@ class TestStl : public TestFixture {
         ASSERT_EQUALS("[test.cpp:2]: (performance) Assigning the result of c_str() to a std::string_view is slow and redundant.\n"
                       "[test.cpp:6]: (performance) Constructing a std::string_view from the result of c_str() is slow and redundant.\n",
                       errout.str());
+
+        check("void f(const std::string& s) {\n" // #11819
+              "    std::string_view sv(s.data(), 13);\n"
+              "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void uselessCalls() {
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index 3688748c349..0ff011e8637 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -6876,6 +6876,10 @@ class TestTokenizer : public TestFixture {
 
         ASSERT_THROW(tokenizeAndStringify("void foo() { if(x) SYSTEM_ERROR }"), InternalError);
         ASSERT_THROW(tokenizeAndStringify("void foo() { dostuff(); SYSTEM_ERROR }"), InternalError);
+
+        ASSERT_NO_THROW(tokenizeAndStringify("void f(void* q) {\n"
+                                             "    g(&(S) { .p = (int*)q });\n"
+                                             "}\n", /*expand*/ true, cppcheck::Platform::Type::Native, "test.c"));
     }
 
     void findGarbageCode() { // Test Tokenizer::findGarbageCode()