Violated order of exception handlers. A write outside the bounds of this variable may occur. V1077. If the 'GetSign' function receives 0, undefined behavior will occur. Wrong variable is probably used in the for operator as an index. It is possible that there is an error. Decreased performance. Possibility of decreased performance. The functions from time.h/ctime should not be used. Consider reviewing 'X'. V782. MISRA. Expressions with pointer type should not be used in the '+', '-', '+=' and '-=' operations. Possible typo inside the string literal. V663. V1064. V5608. Value of the expression should not be converted to the different essential type or the narrower essential type. It demonstrates the return statement, and how it's used both to end function execution, and optionally, to return a value. Potential resurrection of 'this' object instance from destructor. V552. The output of the example looks like this: More info about Internet Explorer and Microsoft Edge. V6047. V5013. Unchecked tainted data is used in expression. Consider checking the use of this variable. Just make it return, @NathanOliver One could imagine a slightly more complex example which was fully reasonable, like. Then the return statement executes, and control returns back to the caller (main). great work. The return value of function 'Foo' is required to be utilized. Priority of '+' operation is higher than priority of '<<' operation. density matrix. The 'throw' keyword could be missing. AUTOSAR. V510. BSTR string becomes invalid. MISRA. If you cant find an answer to your question, fill in the form below and our developers will contact you. V3518. The 'foo' include guard is already defined in the 'bar1.h' header. V507. V2515. V738. The return expression is forced to use a floating-point operation by casting one of the operands to double. V6015. Looking at the assembly GCC 11.2 generates for this with -O3, we see it has in fact recognized that the union of all cases in the if and else if covers all possibilities: It has generated only two code paths, not three. Variable is not used after memory is allocated for it. Connect and share knowledge within a single location that is structured and easy to search. I am getting this error when trying to compile the below code. V811. WPF: several Dependency Properties are registered with a same name within the owner type. Subtraction, >, >=, <, <= should be applied only to pointers that address elements of the same array. The 'continue' operator will terminate 'do { } while (FALSE)' loop because the condition is always false. V791. V3129. Don't use terminating functions in library code. AUTOSAR. Pseudo random sequence is the same at every program run. V1054. This file is marked with copyleft license, which requires you to open the derived source code. Sorting keys priority will be reversed relative to the order of 'OrderBy' method calls. Variable was compared to zero before it was used as a divisor. V653. Unsafe invocation of event, NullReferenceException is possible. There should be no user-defined variadic functions. Perhaps the '??' V6066. V546. Allocation of memory by the pattern "(X*)malloc(sizeof(Y))" where the sizes of X and Y types are not equal. The 'then' statement is equivalent to the 'else' statement. Consider inspecting the loop expression. Upper bound of case range is less than its lower bound. MISRA. MISRA. Identical sub-expressions to the left and to the right of 'foo' operator. All integer constants of unsigned type should have 'U' suffix. Inspect the Nth argument. MISRA. Significant bits may be lost. V515. Unchecked tainted data is used in expression. V2504. V3511. V6104. V3532. V5603. V2561. V3062. Member 'x' should point to string terminated by two 0 characters. AUTOSAR. For example: In the above program, the value to be printed needs to be provided on the right-side of the std::cout <<. A switch-label should only appear at the top level of the compound statement forming the body of a 'switch' statement. The loop will not be executed. (Experienced programmers will generally use a solitary. V2569. Perhaps, it is a typo and 'X' variable should be used instead of 'Y'. V540. Possible excessive expression or typo. V815. V6044. The argument was passed to method several times. Suspicious type cast: 'Type1' to ' Type2'. Consider naming the object. V810. Unreachable code detected. V556. The behavior is undefined for arithmetic or comparisons with pointers that do not point to members of the same array. Already on GitHub? The function with the 'abort/exit/getenv/system' name should not be used. Pointer was used before its check for nullptr. Consider specifying execution policy explicitly. AUTOSAR. V5614. A new object is created, while a reference to an object is expected. The '? Why typically people don't use biases in attention mechanism? MISRA. Parameter is always rewritten in function body before being used. V3101. It is possible that a wrong variable is incremented inside the 'for' operator. Potentially tainted data is processed by regular expression that contains an unsafe pattern. V614. AUTOSAR. AUTOSAR. Some types of expressions require values. V563. Suspicious declaration. V627. Ignored InterruptedException could lead to delayed thread shutdown. Consider using 'i + 1' instead. The left operand of integer division is less than the right one. Getting "non-void function does not return a value in all control paths", New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition, Embedded hyperlinks in a thesis or research paper. Pointer to FILE should not be dereferenced. The expression is always true/false. Literal suffixes should not contain lowercase characters. V649. V3507. Classes should always be derived from std::exception (and alike) as 'public'. V2008. V770. The code fragment is equivalent to the following: Note that undefined behavior occurs only if the end of a non-void function is actually reached. The object was used after it was verified against null. The 'continue' operator will terminate 'do { } while (false)' loop because the condition is always false. A pattern was detected: A || (A && ). Copying from potentially tainted data source. MISRA. Abnormality within similar comparisons. V3045. Identifiers declared in the same scope and name space should be distinct. MISRA. AUTOSAR. V5626. V6065. Uninitialized class member is used when initializing the base class. V6038. V650. Property accessors use different backing fields. Check items X, Y, Z, in lines N1, N2, N3, V526. It is suspicious that the value 'X' of HRESULT type is compared with 'Y'. Probably meant: (T1)((T2)a + b). Potential use of invalid data. V2608. A private Ctor(SerializationInfo, StreamingContext) constructor in unsealed type will not be accessible when deserializing derived types. A pattern was detected: A || (A && ). Not the answer you're looking for? V637. Using 'std::move' function's with const object disables move semantics. Flowing off the end of thesefunctions is equivalent to a'return 0;'. V737. Is a return statement mandatory for C++ functions that do not return void? The opportunity to suppress the warning was overlooked. The function argument corresponding to a parameter declared to have an array type should have an appropriate number of elements. It is possible that different variables are used inside initializer and iterator. A 'break' statement is probably missing in a 'switch' statement. Consider inspecting the expression. The 'foo' word is suspicious. Variable should be declared in a scope that minimizes its visibility. The 'SuspendThread' function is usually used when developing a debugger. The text was updated successfully, but these errors were encountered: Also, can you provide a minimal code sample that reproduces this issue? Probably the '-=' should be used here. Consider inspecting it. V2622. Array element should not be initialized more than once. Memory allocation and deallocation functions should not be used. Several shared_ptr objects are initialized by the same pointer. Trying to return a value from a non-value returning function will result in a compilation error: A return statement that is not the last statement in a function is called an early return. Suspicious assignment inside the condition expression of 'if/while/for' operator. If certain compiler flags are passed, this type of error or warning might get suppressed entirely, which will lead to run-time faults if the given function gets called in the program. As report_square takes no parameters and returns void, we don't assign its result to a variable. An empty container is iterated. Character escape is used in multicharacter literal. MISRA. V834. Possible server-side request forgery. Consider using '||' and '&&' instead. OWASP. V680. Iterators are passed as arguments to 'Foo' function. OWASP. The 'strlen' function was called multiple times inside the body of a loop. V3548. Function result is saved inside the 'byte' type variable. V821. V111. How do I count the number of sentences in C using ". V6022. V3069. The condition (ptr - const_value) is only false if the value of a pointer equals a magic constant. V3162. Possible typo in the spelling of a pre-defined macro name. Probably meant 'A[B] < C'. V3124. V734. OWASP. There will be no undefined behavior here. Consider inspecting this expression. Make sure the expression is correct. Undefined behavior. V1041. V741. V716. V3054. Non-atomic modification of volatile variable. The 'X' counter is not used inside a nested loop. Octal constants should not be used. V126. V3504. Consider inspecting the application's logic. The result of an assignment expression should not be used. V615. Possible error in program's logic. V1037. There should be no implicit integral-floating conversion. MISRA. V817. The variable was utilized in the logical expression before it was verified against null in the same logical expression. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Function receives an address of a 'char' type variable instead of pointer to a buffer. i'm not sure if this is intentional behavior. Result of this expression will be implicitly cast to 'Type'. Potentially tainted data is used in a search filter. Not the answer you're looking for? V2554. MISRA. Your message has been sent. nlohmann/json.hpp:11996:5: warning: non-void function does not return a value in all control paths [-Wreturn-type], static ReferenceType get_ref_impl(ThisType& obj) Expression of the 'A - B > 0' kind will work as 'A != B'. If a function returns no meaningful value, it should be declared with return type void. V6036. How to Make a Black glass pass light through it? The variable is not used after copying. Such a statement will cause the function to return to the caller when the return statement is executed (before the function would otherwise return to the caller, hence, early). One of the operands in the operation equals NN. It is possible that a typo is present inside the string literal. Can the game be left in an invalid state if all state-based actions are replaced? The Ctor(SerializationInfo, StreamingContext) constructor is missing. MISRA. Consider inspecting 'X'. V3183. The 'std::uncaught_exception' function is deprecated since C++17 and is removed in C++20. :' operator may not work as expected. Consider inspecting the condition. Expression is equivalent to moving one unique pointer to another. Decreased performance. V580. The double result is stored in fraction, then printed. - Nate Eldredge. Do not define an unnamed namespace in a header file. The escape sequence ends with a letter and the next character is also a letter. In this lesson, well explore functions with a return type of void. V3039. Memory allocation and deallocation methods are incompatible. B is never printed because the statement never executes. EOF should not be compared with a value of the 'char' type. He also rips off an arm to use as a sword. Semicolon ';' is probably missing after the 'return' keyword. OWASP. Every 'switch' statement should have a 'default' label, which, in addition to the terminating 'break' statement, should contain either a statement or a comment. OWASP. V6089. V2543. It is possible that this 'else' branch must apply to the previous 'if' statement. V3517. V5623. V746. V1042. From the documentation of JSON_THROW_USER: Note that JSON_THROW_USER should leave the current scope (e.g., by throwing or aborting), as continuing after it may yield undefined behavior. Consider inspecting the condition. Use of 'Foo' named constant with 0 value in bitwise operation. It is suspicious to cast object of base class V to derived class U. V718. V6100. Numeric Truncation Error. It is suspicious that value 'X' is assigned to the variable 'Y' of HRESULT type. V3074. The switch statement does not cover all values of the enum. V3526. It's better to use '= default;' syntax instead of empty body. V1086. V3108. The object was created but it is not being used. V6071. V3033. GCC options: warning on non-void functions without a return statement, Type No return, in function returning non-void, no return in function using switch statement, No return statement warning in function returning non-void. Consider using the KK constant. A function should not call itself either directly or indirectly. V2523. Size of array calculated by sizeof() operator was added to a pointer. V1006. V725. V783. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. V3003. Why does flowing off the end of a non-void function without returning a value not produce a compiler error? This may lead to ODR violation. Casting expression to 'X' type before implicitly casting it to other type may be excessive or incorrect. V632. The argument's value is greater than the size of the collection. V2516. Use memsize type instead. V706. Calling the 'delete' operator for a void pointer will cause undefined behavior. OWASP. V012. MISRA. Functions should not be declared at block scope. Possible realloc() leak: when realloc() fails to allocate memory, original pointer is lost. V835. Potentially tainted data is used to create SQL command. It is possible that these are misprints and 'default:' label should be used instead. ", "!"? This condition was already verified in previous line. The warnings you describe only occur if you do not leave the scope, but let the control flow reach its end without returning a value. MISRA. The result will always be zero. Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_u64 on Intel CPUs. V2553. It is possible that another argument should be passed instead. MISRA. V749. Check for typos. Controlling expressions should not be invariant. V537. V3093. V1038. Void functions dont need a return statement. It is suspicious that a char or string literal is added to a pointer. It is not recommended to return null or throw exceptions from 'toString' / 'clone' methods. It calls strlen once and either jumps to .L1 or falls through to the then code, which rejoins at .L1. Sign in to comment V2505. Expression of essential type 'foo' should not be explicitly cast to essential type 'bar'. Void functions don't need a return statement A void function will automatically return to the caller at the end of the function. The loop counter should not have floating-point type. V2538. NullReferenceException is possible. An empty exception handler. The alignment rules and type sizes have been changed. V014. 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. V1078. What is this brick with a round back and a stud on the side used for? V645. Some of the references in project are missing or incorrect. Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). The variable is incremented in the loop. Function should not contain labels not used by any 'goto' statements. Remember that members are initialized in the order of their declarations inside a class. Type implementing IEquatable
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