warning non void function does not return a value

MISRA. V2005. The code's operational logic does not correspond with its formatting. It is recommended to use the 'make_unique/make_shared' function to create smart pointers. V737. He also rips off an arm to use as a sword. Generating points along line with specifying the origin of point generation in QGIS. 565), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. This can quickly overflow stack. AUTOSAR. For more information on hiding warnings or treating warnings as errors, see Configuring Warnings in Visual Basic. V678. What is scrcpy OTG mode and how does it work? The 'A' field should probably be returned/assigned instead. V645. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Constant expression evaluation should not result in an unsigned integer wrap-around. Possible excessive expression or typo. V3163. It is odd that the body of 'Foo_1' function is fully equivalent to the body of 'Foo_2' function. V506. Consider inspecting the 'for' operator. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? It is possible that this 'else' branch must apply to the previous 'if' statement. V6075. Constant value is represented by an octal form. IDisposable object is not disposed before method returns. V2560. V5304. V540. Member operator[] of 'foo' class has a 32-bit type argument. Since the function doesnt return a value, this is fine. V3083. Expression of sizeof(T)*N kind is summed up with pointer to T type. What is the Russian word for the color "teal"? Consider checking the N format items of the 'Foo' function. EOF should not be compared with a value of the 'char' type. Probably meant: '\xNN'. V700. V2546. OWASP. Backward Incompatible Changes Like the names reserved by the Scalar Type Declarations and Reserve More Types in PHP 7 RFCs, the void return type does not become a reserved word proper, but is instead . V007. V6029. Typedef names should be unique across all name spaces. A pattern was detected: A || (A && ). Possible NullReferenceException. Class destructor should not exit with an exception. The 'static' keyword shall not be used between [] in the declaration of an array parameter. V670. V3155. The stream is checked for EOF before reading from it but is not checked after reading. V3007. V5614. The argument of the method is not expected to be null. Cast should not remove 'const' / 'volatile' qualification from the type that is pointed to by a pointer or a reference. V656. It is suspicious that a char or string literal is added to a pointer. V559. Possible exception when serializing type. Possibly meant: 'A += B'. V5604. V2567. V784. V3536. V3127. V1065. V579. Empty exception handler. Inspect the program's logic. The use of 'if (A) {} else if (A) {}' pattern was detected. An abnormality within similar comparisons. [Solved]-Why does this C++ snippet compile (non-void function does not Use of outdated cryptographic algorithm is not recommended. V3521. Class member is initialized with dangling reference. V732. The standard input/output functions should not be used. Functions should not have unused parameters. V649. Variable is used after it is moved. The global namespace should only contain 'main', namespace declarations and 'extern "C"' declarations. Perhaps this is a mistake. Implicit conversion of the type of 'new' operator's argument to size_t type. An item with the same key has already been added. AUTOSAR. V6099. Use of '\0xNN' characters. Suspicious sequence of types castings: memsize -> 32-bit integer -> memsize. V680. Defining an absolute path to the file or directory is considered a poor style. V015. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. V2604. V1030. OWASP. Probably meant: '(*pointer)++'. The compiler isn't going to go to very much trouble to detect this situation, because functions like throw_blah which are guaranteed to never return are rare, and because except in the simplest of situations, there's no way for it to reliably do so. warning: non-void function does not return a value Naimur Rahman 44 subscribers Subscribe 1 Share 316 views 6 months ago warning: non-void function does not return a value Show more Show more. V641. What's the cheapest way to buy out a sibling's share of our parents house if I have no cash and want to pay less than the appraised value? Consider inspecting the condition. MISRA. Incorrect format. MISRA. nlohmann/json.hpp:20877:5: warning: non-void function does not return a value in all control paths [-Wreturn-type]. Use of the throw (a, b); pattern. operator are identical. MISRA. Suspicious expression inside parentheses. The 'Foo' function is called twice to deallocate the same resource. V2578. Unchecked tainted data is used in expression. All I want the function to do is add one to the value of the each character inputted into the string array and shift it on the ASCII table and then return the coded message. This will result in undefined behavior. The expression is always false on newer compilers. AUTOSAR. V6041. Block of memory should only be freed if it was allocated by a Standard Library function. Consider inspecting usage of 'Y' counter. Is that what you want? MISRA. Potential XXE vulnerability. Sign in to comment Non-void function must return value. If a return type isn't specified, the C compiler assumes a default return type of int. When a return statement contains an expression in functions that have a void return type, the compiler generates a warning, and the expression isn't evaluated. V2610. Temporary object is immediately destroyed after being created. The compiler has been asked to treat warnings as errors. V552. V1002. V626. It is not advised to declare type 'T' as 32-bit type. MISRA. The variable is never modified. Consider allocating it on the stack instead. Here is a full example. Why does an overridden function in the derived class hide other overloads of the base class? V566. V1055. Consider making it implement 'IDisposable' interface. The 'static' storage class specifier should be used in all declarations of object and functions that have internal linkage. V561. Review captured variable in lambda expression. Remember that members are initialized in the order of their declarations inside a class. Passing cheap-to-copy argument by reference may lead to decreased performance. V3167. V699. It is possible that the number of elements should be calculated by sizeof(A)/sizeof(A[0]). V525. OWASP. V3164. Use of uninitialized variable 'Foo'. V2517. V748. The statement std::cout << "B" is never executed because the function has returned to the caller prior to that point. The object of non-passive (non-PDS) type cannot be used with the function. What is an early return, and what is its behavior? Function returns pointer/reference to temporary local object. A value of variable is not modified. We must also say what type of enter the function lives returning, e.g. Consider checking the Nth actual argument of the 'Foo' function. The 'foo' include guard is already defined in the 'bar1.h' header. V505. V6074. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, FWIW, compiling the example code on godbolt.org with, @EricPostpischil but compiler does not know if, Yes, it does know. V2507. It is possible that an incorrect variable is compared with null after type conversion using 'dynamic_cast'. V1071. Did the drapes in old theatres actually say "ASBESTOS" on them? V302. Asking for help, clarification, or responding to other answers. Pointer to an object of the class is cast to unrelated class. V6100. Initial and final values of the iterator are the same. It was deemed useful to report this warning as it typically results from inadvertent program design rather than intentional coverage of all cases with a redundant test. V1058. V3109. Consequently, putting an empty return statement at the end of a void function is redundant: Do not put a return statement at the end of a non-value returning function. V3010. Use 'double.isNaN()' method instead. This expression can be simplified. And if candidate_count is 0 or negative it will return without a value at all (hence the error). For more information, see "Behavior" in Function Statement. Perhaps, it is a typo and 'X' variable should be used instead of 'Y'. 55976 - -Werror=return-type should error on returning a value from a Checking value for null will always return false when generic type is instantiated with a value type. :' operator, regardless of its conditional expression, always returns one and the same value. V2598. In such a case, the comparison operation may behave unexpectedly. V6063. An unconditional 'break/continue/return/goto' within a loop. AUTOSAR. If total energies differ across different software, how do I decide which software to use? V610. Floating-point values should not be tested for equality or inequality. Casts between a pointer and a non-integer arithmetic type should not be performed. V642. Unary minus operator should not be applied to an expression of the unsigned type. In this lesson, well explore functions with a return type of void. When main calls printHi, the code in printHi executes, and Hi is printed. I forgot it would still issue if all paths don't have a return. V2616. V3052. Then the ',' operator returns a resulting value from the right side of the expression. Do not concatenate string literals with different prefixes. Solve Control Reaches End of Non-Void Function Error in C++ V2603. The value of uninitialized variable should not be used. V108. Inspect the following programs and state what they output, or whether they will not compile. V782. Defining absolute path to file or directory is considered a poor coding style. V599. V2505. Constructor contains potentially uninitialized members. Sign in Implicitly specified enumeration constants should be unique consider specifying non-unique constants explicitly. Expressions with enum underlying type should have values corresponding to the enumerators of the enumeration. Consider inspecting usage of 'Y' counter. All analyzer messages were filtered out or marked as false positive. Calling overrideable class member from constructor is dangerous. The '\0xNN' characters were encountered. A private Ctor(SerializationInfo, StreamingContext) constructor in unsealed type will not be accessible when deserializing derived types. Don't use terminating functions in library code. It is pointless to compute the distance between the elements of different arrays. V567. String literal contains potential interpolated expression. V3132. V5613. Unions should not be used. Member invocation on this value may lead to an exception. Why are players required to record the moves in World Championship Classical games? If the function has a void return type, this behavior is okay, but may be considered poor style. Undefined behavior will occur in case of signed integer overflow. Cyclomatic complexity: NN. The '!=' operator should probably be used here. The 'X' counter is not used inside a nested loop. V1084. V617. V515. V5625. Your message has been sent. V2617. V6048. Different containers are used to set up initial and final values of iterator. New variable with default value is created instead of 'std::unique_lock' that locks on the mutex. It is possible that the 'i' variable should be incremented instead of the 'n' variable. V3111. This program prints the letters A and B on separate lines. V635. V2533. Class defines a custom new or delete operator. V3075. V1067. What if I write return statement in constructor? Appending an element and checking for key uniqueness is performed on two different variables. Reference was invalidated because of destruction of the temporary object returned by the function. Possible incorrect initialization of variable. Variable with static storage duration is declared inside the inline function with external linkage. The macro with the 'setjmp' name and the function with the 'longjmp' name should not be used. Variable should be declared in a scope that minimizes its visibility. return statement in C++ with Examples - GeeksforGeeks V3084. V3511. MISRA. Function receives suspicious argument. V6003. The second condition is always false. V2530. Label is present inside switch(). V6103. OWASP. Therefore, printHi is given a void return type. Potentially unsafe double-checked locking. Giving short names to global variables is considered to be bad practice. All conditional inclusion preprocessor directives should reside in the same file as the conditional inclusion directive to which they are related. MISRA. Function call may lead to buffer overflow. V2536. It can possibly be replaced by the call to the 'find' function. V3131. Use of a pointer to FILE when the associated stream has already been closed. Function should not be declared implicitly. My statement was question specific. Potentially tainted data might be used to execute a malicious script. Function with a non-void return type should return a value from all exit paths. Suspicious sequence of assignments: A = B; B = A;. Modified value of the operand is not used after the increment/decrement operation. AUTOSAR. The opportunity to suppress the warning was overlooked. Possible incorrect use of '#pragma warning(default: X)'. Check the following code block after the 'if' statement. The 'goto' statement shouldn't jump to a label declared earlier. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. What differentiates living as mere roommates from living in a marriage-like relationship? Incorrect index type: 'foo[not a memsize-type]'. V2531. OWASP. The 'operator &&', 'operator ||', 'operator ,' and the unary 'operator &' should not be overloaded. We and our partners use cookies to Store and/or access information on a device. Thanks for contributing an answer to Stack Overflow! V1052. V648. Line whose first token is '#' should be a valid preprocessing directive. The predefined identifier '__func__' always contains the string 'operator()' inside function body of the overloaded 'operator()'. Potential insecure deserialization vulnerability. OWASP. The 'X' variable is used for this loop and outer loops. The 'x' variable is assigned to itself. MISRA. Some statements require values to be provided, and others dont. Non-void function is no values returned causes crash #5867 Calling the 'delete' operator for a void pointer will cause undefined behavior. return expressionopt ; The value of expression, if present, is returned to the calling function.

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