diff --git a/lib/checkstl.cpp b/lib/checkstl.cpp
index 4d004af4e..4fdfaa305 100644
--- a/lib/checkstl.cpp
+++ b/lib/checkstl.cpp
@@ -1959,8 +1959,8 @@ void CheckStl::string_c_str()
                         string_c_strError(tok);
                 } else if (printPerformance && tok->tokAt(1)->astOperand2() && Token::Match(tok->tokAt(1)->astOperand2()->tokAt(-3), "%var% . c_str|data ( ) ;")) {
                     const Token* vartok = tok->tokAt(1)->astOperand2()->tokAt(-3);
-                    if (tok->variable()->isStlStringType() && vartok->variable() && vartok->variable()->isStlStringType())
-                        string_c_strAssignment(tok);
+                    if ((tok->variable()->isStlStringType() || tok->variable()->isStlStringViewType()) && vartok->variable() && vartok->variable()->isStlStringType())
+                        string_c_strAssignment(tok, tok->variable()->getTypeName());
                 }
             } else if (printPerformance && tok->function() && Token::Match(tok, "%name% ( !!)") && tok->str() != scope.className) {
                 const auto range = c_strFuncParam.equal_range(tok->function());
@@ -1993,8 +1993,9 @@ void CheckStl::string_c_str()
                     }
                 }
             } else if (printPerformance && Token::Match(tok, "%var% (|{ %var% . c_str|data ( )") &&
-                       tok->variable() && tok->variable()->isStlStringType() && tok->tokAt(2)->variable() && tok->tokAt(2)->variable()->isStlStringType()) {
-                string_c_strConstructor(tok);
+                       tok->variable() && (tok->variable()->isStlStringType() || tok->variable()->isStlStringViewType()) &&
+                       tok->tokAt(2)->variable() && tok->tokAt(2)->variable()->isStlStringType()) {
+                string_c_strConstructor(tok, tok->variable()->getTypeName());
             } else if (printPerformance && tok->next() && tok->next()->variable() && tok->next()->variable()->isStlStringType() && tok->valueType() && tok->valueType()->type == ValueType::CONTAINER &&
                        ((Token::Match(tok->previous(), "%var% + %var% . c_str|data ( )") && tok->previous()->variable() && tok->previous()->variable()->isStlStringType()) ||
                         (Token::Match(tok->tokAt(-5), "%var% . c_str|data ( ) + %var%") && tok->tokAt(-5)->variable() && tok->tokAt(-5)->variable()->isStlStringType()))) {
@@ -2115,17 +2116,17 @@ void CheckStl::string_c_strParam(const Token* tok, nonneg int number, const std:
     reportError(tok, Severity::performance, "stlcstrParam", oss.str(), CWE704, Certainty::normal);
 }
 
-void CheckStl::string_c_strConstructor(const Token* tok)
+void CheckStl::string_c_strConstructor(const Token* tok, const std::string& argtype)
 {
-    std::string msg = "Constructing a std::string from the result of c_str() is slow and redundant.\n"
-                      "Constructing a std::string from const char* requires a call to strlen(). Solve that by directly passing the string.";
+    std::string msg = "Constructing a " + argtype + " from the result of c_str() is slow and redundant.\n"
+                      "Constructing a " + argtype + " from const char* requires a call to strlen(). Solve that by directly passing the string.";
     reportError(tok, Severity::performance, "stlcstrConstructor", msg, CWE704, Certainty::normal);
 }
 
-void CheckStl::string_c_strAssignment(const Token* tok)
+void CheckStl::string_c_strAssignment(const Token* tok, const std::string& argtype)
 {
-    std::string msg = "Assigning the result of c_str() to a std::string is slow and redundant.\n"
-                      "Assigning a const char* to a std::string requires a call to strlen(). Solve that by directly assigning the string.";
+    std::string msg = "Assigning the result of c_str() to a " + argtype + " is slow and redundant.\n"
+                      "Assigning a const char* to a " + argtype + " requires a call to strlen(). Solve that by directly assigning the string.";
     reportError(tok, Severity::performance, "stlcstrAssignment", msg, CWE704, Certainty::normal);
 }
 
diff --git a/lib/checkstl.h b/lib/checkstl.h
index 55cc4f057..0fd1dac0a 100644
--- a/lib/checkstl.h
+++ b/lib/checkstl.h
@@ -193,8 +193,8 @@ private:
     void string_c_strError(const Token* tok);
     void string_c_strReturn(const Token* tok);
     void string_c_strParam(const Token* tok, nonneg int number, const std::string& argtype = "std::string");
-    void string_c_strConstructor(const Token* tok);
-    void string_c_strAssignment(const Token* tok);
+    void string_c_strConstructor(const Token* tok, const std::string& argtype = "std::string");
+    void string_c_strAssignment(const Token* tok, const std::string& argtype = "std::string");
     void string_c_strConcat(const Token* tok);
     void string_c_strStream(const Token* tok);
 
diff --git a/test/teststl.cpp b/test/teststl.cpp
index be6771498..cc8ba3168 100644
--- a/test/teststl.cpp
+++ b/test/teststl.cpp
@@ -4202,6 +4202,18 @@ private:
               "}\n");
         ASSERT_EQUALS("[test.cpp:3]: (performance) Passing the result of c_str() to a function that takes std::string_view as argument no. 1 is slow and redundant.\n",
                       errout.str());
+
+        check("std::string_view f(const std::string& s) {\n"
+              "    std::string_view sv = s.c_str();\n"
+              "    return sv;\n"
+              "}\n"
+              "std::string_view g(const std::string& s) {\n"
+              "    std::string_view sv{ s.c_str() };\n"
+              "    return sv;\n"
+              "}\n");
+        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());
     }
 
     void uselessCalls() {