Consider using the M_NN constant from . The expression was implicitly cast from integer type to real type. It calls strlen once and either jumps to .L1 or falls through to the then code, which rejoins at .L1. We know it knows for two reasons. The expression of 'foo(foo(x))' pattern is excessive or contains an error. V3133. Function '<procedurename>' doesn't return a value on all code paths V3112. V833. A boy can regenerate, so demons eat him for years. By cv void, it simply means a function with void return type, that may be const or volatile. V510. V517. V504. It is suspicious that the 'foo' field in derived class overwrites field in base class. Abnormality within similar comparisons. V5628. Identifiers that start with '__' or '_[A-Z]' are reserved. V6092. V6063. The expression is excessive or contains a misprint. V1006. This will result in undefined behavior. I did return true and false but its still giving me this error [deleted] 2 yr. ago More posts you may like V2510. Thus, these functionsdo not result inundefined behavior. V110. Dangerous explicit type pointer conversion. V2567. V006. V1017. V2544. V1034. Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? V591. Non-void function must return value. V3178. V6021. OWASP. V637. Referenced package contains vulnerability. It is possible that these are misprints and 'default:' label should be used instead. V3173. Memsize type is used in the struct/class. V752. V3055. V1089. V009. Flexible array members should not be declared. V724. Use of constant NN. V1081. MISRA. V3136. MISRA. Possible exception when deserializing type. V3504. The original exception object was swallowed. IDisposable object is not disposed before method returns. V513. The 'malloc' function allocates suspicious amount of memory calculated by 'strlen(expr)'. Octal constants should not be used. Incorrect diagnostics are possible. BSTR string becomes invalid. Some diagnostic messages may contain incorrect line number. Decreased performance. V3121. MISRA. V2570. V684. V739. Potential incorrect use of item 'X'. V2533. V011. Variable is not used after memory is allocated for it. V1068. Octal and hexadecimal escape sequences should be terminated. Since the function doesnt return a value, this is fine. V683. V519. The output of the example looks like this: More info about Internet Explorer and Microsoft Edge. V633. V3094. V5614. Non-void function is no values returned causes crash #5867 There is no point to declare constant reference to a number. Such a function results in undefined behavior. Consider inspecting the expression. V2513. Decreased performance. Consider reviewing this value. V693. V1047. Buffer needs to be securely cleared on all execution paths. AUTOSAR. Possible SQL injection. 55976 - -Werror=return-type should error on returning a value from a V3119. rev2023.4.21.43403. Consider inspecting 'X'. MISRA. V524. MISRA. Unbounded functions performing string operations should not be used. A non-serializable class should not be serialized. V812. V661. V3158. MISRA. MISRA. Part of conditional expression is always true/false. An identifier with array type passed as a function argument should not decay to a pointer. V6031. Passing cheap-to-copy argument by reference may lead to decreased performance. Lowercase 'L' at the end of a long literal can be mistaken for '1'. More than one sizeof() operator is used in one expression. V3003. AUTOSAR. Incorrect format. V527. Identical expression to the left and to the right of compound assignment. Consider inspecting the condition for mistakes. V1049. Methods returning a value: The 'i' variable should probably be incremented instead of the 'n' variable. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Expression of the 'A =- B' kind is used. V221. I will edit. Possible incorrect use of '#pragma warning(default: X)'. Consider inspecting the expression. V2584. The expression was implicitly cast from integer type to real type. I am getting this error when trying to compile the below code. V1001. P.S. V1063. V779. V563. V677. V3145. V807. There are two 'if' statements with identical conditional expressions. AUTOSAR. V2019. Possible command injection. Not the answer you're looking for? V2558. It's possible that ',' should be replaced by ';'. V1018. Check for an error or bad coding style. ConcurrentModificationException may occur. Conversions between pointers to objects and integer types should not be performed. Consider inspecting the expression. V2550. V2597. Consider re-generating your suppress file to continue updating it. N operand of '? OWASP. Implicit type conversion N argument of function 'foo' to memsize type. V6086. V3514. Probably meant: *ptr != zero. V2504. V2608. V551. Check lines: N1, N2. Manage Settings V220. V827. The expression, if present, is evaluated and then converted to the type returned by the function. Suspicious pointer arithmetic with 'malloc/new'. Likewise, report_ratio returns void, so we don't save its return value, either. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Potentially tainted data is written into logs. WPF: A class containing registered property does not correspond with a type that is passed as the ownerType.type. V5604. MISRA. V1024. Exception was thrown by pointer. Suspicious expression 'A[B < C]'. Check lines: N1, N2. The code's operational logic does not correspond with its formatting. This variable is passed by reference to the 'Foo' function in which its value will be used. Congratulations! V5602. The expression was enclosed by parentheses twice: ((expression)). V702. Make sure the expression is correct. V3062. In this case, we have the 'main' function. Probably meant: 'CC::AA()'. V6088. Potential XXE vulnerability. OWASP. Suspicious division. Potential logical error. Logical literal belongs to second operator with a higher priority. V3125. It's possible that the line was commented out improperly, thus altering the program's operation logics. V1088. These conditions may be true or false. Both paths return a value. V2013. V6096. By default, this message is a warning. Two or more case-branches perform the same actions. Perhaps, it is a typo and 'X' variable should be used instead of 'Y'. Use a plain return statement to make your intent clear. What if I write return statement in constructor? Function '' doesn't return a value on all code paths. V6055. V787. V2547. V3129. OWASP. V3130. Function with a non-void return type should return a value from all exit paths. V3525. Expression of the 'A =+ B' kind is used. V786. Variables are initialized through the call to the same function. V5607. Perhaps, 'ThenBy' should be used instead. Well occasionally send you account related emails. A value is being subtracted from the unsigned variable. Subtraction, >, >=, <, <= should be applied only to pointers that address elements of the same array. The 'X' counter is not used inside a nested loop. The expression is incorrect or it can be simplified. V3013. There will be no undefined behavior here. OWASP. Expression inside assert statement can change object's state. In the above example, when print() executes, it will first print A. Consider checking the Nth actual argument of the 'Foo' function. Possible missing parentheses. Locking operations must be performed on the same thread. Exception classes should be publicly accessible. Size of an array is not specified. Understanding the probability of measurement w.r.t. V3100. From what I can gather online, this means that I am not returning a value from my function? Expression is equivalent to moving one unique pointer to another. Typedef names should be unique across all name spaces. Priority of the '&&' operator is higher than that of the '||' operator. No return statement is required. Calling the 'foo' virtual function in the constructor/destructor may lead to unexpected result at runtime. This presents the compiler with a contradicting declaration and return. Consider creating a pointer/reference to avoid using the same expression repeatedly. V3134. It is suspicious that the value 'X' of HRESULT type is compared with 'Y'. V3512. The result will always be zero. The switch statement does not cover all values of the enum. You are assuming that loop will always run, but, what if an empty string ends up getting submitted? The functions from time.h/ctime should not be used. Unlike this recommendation, that rule is restricted to functions from the Standard C library. MISRA. operator instead. Function with a non-void return type should return a value from all exit paths. It is possible that an assigned variable should be checked in the next condition. V775. Object was created but not used. MISRA. Consider refactoring the code. V1064. What is this brick with a round back and a stud on the side used for? Function receives suspicious argument. V783. Your message has been sent. The code's operational logic does not correspond with its formatting. V1004. It's probably an error or un-optimized code. V2557. V785. Loop break conditions do not depend on the number of iterations. V6056. Variable was compared to zero before it was used as a divisor. Unreachable code under a 'case' label. OWASP. 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? Pointer was used unsafely after its check for nullptr. The 'goto' statement should not be used. V3044. Pointer is compared with 'zero' value. MISRA. Perhaps this is a mistake. This may be a potential error. Range intersections are possible within conditional expressions. The variable 'X' is being used for this loop and for the outer loop. Object was created but is not used. V3079. V708. Signed value is converted to an unsigned one with subsequent expansion to a larger type in ternary operator. V686. V678. OWASP. Consider casting operands, not the result. V573. V2573. It is possible that 'i < X.size()' should be used instead of 'X.size()'. for example: void throw_blah () { throw "blah"; } int foo () { throw_blah (); } I am pretty curious about this as this is directly related to one of my other issue . The long long result is stored in squared, then printed. When main calls printHi, the code in printHi executes, and Hi is printed. Inspect the program's logic. What differentiates living as mere roommates from living in a marriage-like relationship? V6059. 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 . Function body contains the 'X' label that is not used by any 'goto' statements. V6006. Code contains collection of similar blocks. So, the solution is to apply the warn_unused_result attribute on the function. Pointer to local array 'X' is stored outside the scope of this array. One of the operands in the operation equals NN. 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. V3187. Size of a pointer is divided by another value. AUTOSAR. Unary minus operator should not be applied to an expression of the unsigned type. The object was used before it was verified against null. V6044. V597. AUTOSAR. V645. Significant bits may be lost. After the year 2038, the program will work incorrectly. PHP: rfc:void_return_type Cast should not convert a pointer to a function to any other pointer type, including a pointer to function type. If no value is provided, the compiler will produce a syntax error. V1079. Dangerous call of 'Foo' function. The 'Foo' function is called twice in the specified expression to calculate length of the same string. Consider utilizing 64-bit compiler if possible. If no return expression is supplied, the Microsoft C runtime returns a value that indicates success (0) or failure (a non-zero value). V3166. V3141. V2523. V3107. The expression is always false on newer compilers. The 'Foo' function should not be called from 'DllMain' function. Unsafe invocation of event, NullReferenceException is possible. It is more efficient to catch exception by reference rather than by value. It is suspicious that the assignment operator takes an object by a non-constant reference and returns this object. V2012. Pointer is used both as an array and as a pointer to single object. V662. V832. Pointer was used after the memory was released. V602. MISRA. Consider using the KK constant. Array is used as pointer to single object. Value of a composite expression should not be cast to a different essential type category or a wider essential type. Thanks for contributing an answer to Stack Overflow! V1082. Structures with members of real type are compared byte-wise. V5011. Do not warn if a caller of a function marked with attribute warn_unused_result (see Variable Attributes) does not use its return value. Possible typo inside the string literal. A double memory deallocation will occur. Consider inspecting conditional expression of the loop. Converting integers or pointers to BOOL can lead to a loss of high-order bits. Possible XSS vulnerability. Check the shift operator. Consider inspecting the expression. V649. "Signpost" puzzle from Tatham's collection, QGIS automatic fill of the attribute table by expression, Generating points along line with specifying the origin of point generation in QGIS. The 'GetObjectData' implementation in unsealed type is not virtual, incorrect serialization of derived type is possible. However, this statement is trying to send the return value of printHi to std::cout to be printed. The '? V806. V104. So, the compiler generates an error. - Nate Eldredge. AUTOSAR. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Regression: objToJSON "nonvoid function does not return a value" error is back #31463 Closed pkaleta mentioned this issue on Jun 24, 2020 BUG: NUMPY_IMPORT_ARRAY_RETVAL undeclared when installing pandas 0.18.1 #34969 Closed Sign up for free to join this conversation on GitHub . V2006. Please attach your files here. This condition was already verified in previous line. Decreased performance. Check if program logic handles it correctly. V207. V748. Further, testing by changing the function return type to int and changing the returns to 0 in the then code, 1 in the else if code, and 2 outside that shows assembly code that only returns 0 or 1, proving GCC was not just collapsing the third path into undefined behavior; it outright eliminates it because it is not possible. MISRA. The switch statement does not cover all values of the enum. Arguably, this is a shortcoming in the compiler. Not all IDisposable members are properly disposed. The resulting value could be inaccurate. Consider reviewing the source code that uses the container. V3060. V004. V3180. V621. C-style explicit type casting is utilized. V3161. The 'Foo' function receives the pointer and its size as arguments. The 'then' statement is equivalent to the 'else' statement. Field 'A' is being used before it was initialized. This causes implementation-defined behavior. The sizeof() operator returns pointer size instead of array size. V668. Possible null dereference. Two similar code fragments were found. If you haven't received our response, please do the following: check your Spam/Junk folder and click the The 'continue' operator will terminate 'do { } while (false)' loop because the condition is always false. Potentially tainted data is used as a path. V5008. Currently your code is returning the vector based on conditions. V109. Consider using the extended version of the 'foo' function here. Expression of the 'A - B > 0' kind will work as 'A != B'. :' operator. V572. Can the game be left in an invalid state if all state-based actions are replaced? The constant NN is being utilized. The hyperbolic space is a conformally compact Einstein manifold. The compiler has been asked to warn when a function has a control path that doesn't return a value (although not mentioned in the message, throwing a value and possibly calling a non-returning function may also be considered acceptable). operator should have 'bool' type. V6041. At the end of printHi, control returns to main and the program proceeds. 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. The Ctor(SerializationInfo, StreamingContext) constructor is missing. MISRA. Anonymous function is used to unsubscribe from event. :' operation: implicit type conversion to memsize type. V5619. Making statements based on opinion; back them up with references or personal experience. Suspicious return of an always empty collection. V2593. V696. V2506. Property accessors use different backing fields. Solve Control Reaches End of Non-Void Function Error in C++ nlohmann/json.hpp:20925:5: warning: non-void function does not return a value in all control paths [-Wreturn-type], const_reference operator[](const typename object_t::key_type& key) const V1043. If the function has a void return type, this behavior is okay, but may be considered poor style. Unreachable code should not be present in the project. :' operator, regardless of its conditional expression, always returns one and the same value. V3007. Silent suppression of exceptions can hide errors in source code during testing. The function was annotated as dangerous. V566. It makes code less human error prone. Potential logical error is present. This may break the program's logic. Stack of original exception could be lost. V820. MISRA. V3071. Suspicious division: sizeof(X) / Value. V3123. V2014. V3052. Use of two opposite conditions. Code contains invisible characters that may alter its logic. V1084. V3043. Diagnostics from the 64-bit rule set are not entirely accurate without the appropriate 64-bit compiler. OWASP. So GCC knows there is no possible control path that does not return a value, but it reported the warning (elevated to an error) anyway. Suspicious sequence of types castings: pointer -> memsize -> 32-bit integer. Possible XPath injection. Perhaps, this is a typo and 'X' variable should be used instead of 'Y'. In such a case, the comparison operation can potentially behave unexpectedly. The variable of char type is compared with pointer to string. nlohmann/json.hpp:20877:5: warning: non-void function does not return a value in all control paths [-Wreturn-type]. Two similar code fragments. If you wish to call constructor, use 'this->Foo::Foo(.)'. V6081. V1031. V301. Use of potentially tainted data in configuration may lead to security issues. V6094. V2008. Connect and share knowledge within a single location that is structured and easy to search. The identifier 'main' should not be used for a function other than the global function 'main'. I recently fixed something similar in #2898 which is not yet merged. V3189. The 'operator &&', 'operator ||', 'operator ,' and the unary 'operator &' should not be overloaded. OWASP. A part of conditional expression is always true/false if it is evaluated. One pair of parentheses is unnecessary or misprint is present. Suspicious operation of 'sizeof(X)/sizeof(T)' kind, where 'X' is of the 'class' type. As the diagnostic message states, the function does have a control path where a value isn't returned. V501. Uninitialized class member is used when initializing the base class. V5627. It is more efficient to search for 'X' character rather than a string. V2581. Consider inspecting the expression. V640. V6004. Unreachable code detected. V6046. Explicit conversion from 32-bit integer type to pointer type. The 'a % b' expression always evaluates to 0. It is highly probable that the semicolon ';' is missing after 'return' keyword. V804. Argument is of the 'T' type. Expression contains a suspicious mix of integer and real types. Consider inspecting virtual function arguments. Priority of '&&' operation is higher than priority of '||' operation. Reference was invalidated because of destruction of the temporary object returned by the function. Controlling expressions should not be invariant. V3530. V577. In such a case, the comparison operation may behave unexpectedly. Declaration should contain no more than two levels of pointer nesting. Suspicious semicolon ';' after 'if/for/while' operator. The result will always be zero. MISRA. The predefined identifier '__func__' always contains the string 'operator()' inside function body of the overloaded 'operator()'. Why don't we use the 7805 for car phone chargers? AUTOSAR. V717. MISRA. MISRA. AUTOSAR. V3099. V3036. V3066. V3086. V659. Many programmers use parentheses to enclose the expression argument of the return statement. The value from the uninitialized optional is used. Consider inspecting the expression. Expression used in condition should have essential Boolean type. External identifiers should be distinct. This expression can be simplified. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The 'first' argument of 'Foo' function is equal to the 'second' argument. The alignment rules and type sizes have been changed. Value may not correspond with the length of a string passed with YY argument. malloc() function accepts a dangerous expression in the capacity of an argument. V741. Potentially unsafe double-checked locking. Consider using '||' and '&&' instead. V3155. Suspicious type cast: 'Type1' to ' Type2'. This may lead to undefined behavior. Explicit conversion from memsize type to 32-bit integer type. The 'default' label should be either the first or the last label of a 'switch' statement. The object is returned from inside 'using' block. MISRA. Consider replacing methods: 'insert' -> 'emplace', 'push_*' -> 'emplace_*'. The variable can be constructed in a lower level scope. V3002. NullReferenceException is possible. Potentially unsafe double-checked locking. Suspicious subexpression in a sequence of similar comparisons. V3184. Both operands of an operator should be of the same type category. Potentially tainted data might be used to execute a malicious script. Suspicious assignment inside the conditional expression of 'if/while/dowhile' statement. Initializer of a field marked by [ThreadStatic] attribute will be called once on the first accessing thread. V015. Try to avoid many return statements in your code. Suspicious literal: '/r'. The expression is excessive or contains a logical error. The 'static' storage class specifier should be used in all declarations of object and functions that have internal linkage. V3014. Attempt to free memory containing the 'int A[10]' array by using the 'free(A)' function. V3151. MISRA. The value of the captured variable will be overwritten on the next iteration of the loop in each instance of anonymous function that captures it. No objects are passed to the 'std::scoped_lock' constructor. Presence of #line directives may cause some diagnostic messages to have incorrect file name and line number. Possible incorrect order of arguments passed to function. V2511. V5302. AUTOSAR. V2553. Does the 500-table limit still apply to the latest version of Cassandra? V3177. An abnormality within similar comparisons. operator works in a different way than it was expected. V6013. and '.' Perhaps another variable should be incremented instead. V6037. V3127. Consider inspecting it for a possible error. V2616. Absolute values of both operands are equal. V2617. If you cant find an answer to your question, fill in the form below and our developers will contact you. V5626. V3026. V1036. It is possible that an error is present. Was Aristarchus the first to propose heliocentrism? V5610. V753. The 'if (ptr != NULL)' check can be removed. Expression's value is copied at the variable declaration. Use of a pointer to FILE when the associated stream has already been closed. Does this function have explicit return values on all control paths? V2531. The object was used after it was verified against null. OWASP. It only takes a minute to sign up. Calling element access method for potentially empty collection may result in exception. Literal suffixes should not contain lowercase characters. V703. V575. Block of memory should only be freed if it was allocated by a Standard Library function. OWASP. This condition was already verified in previous line. It is safer to use the 'foo' function. V611. V3095. V1037. Expression was implicitly cast from integer type to real type. Bit fields should only be declared with explicitly signed or unsigned integer type. V122. MISRA. V560. MISRA. MISRA. Consider inspecting the NN argument of the 'Foo' function. Any loop should be terminated with no more than one 'break' or 'goto' statement. The variable from the loop exit condition does not change its value between iterations. An odd precise comparison. Unconditional 'break/continue/return/goto' within a loop. V3553. :' operator may not work as expected. V1077. It is possible that a call to 'Start' method is missing. V634. Use volatile variable(s) or synchronization primitives to avoid this. The statement std::cout << "B" is never executed because the function has returned to the caller prior to that point. Consider inspecting the expression. V2535. Decreased performance. operator should have 'bool' type. The return value of function 'Foo' is required to be utilized. V830. V539. It may happen that flow is never reaching that part of the code but it is important to write for the compiler. AUTOSAR. How can I control PNP and NPN transistors together from one pin? The standard signal handling functions should not be used. Potentially tainted data is used in the XPath expression. Macro should not be defined with the same name as a keyword.

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