Implicit assignment type conversion to memsize type. Value may not correspond with the length of a string passed with YY argument. 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. Why does flowing off the end of a non-void function without returning a value not produce a compiler error? V530. Potentially tainted data is used in the URL. Does the 500-table limit still apply to the latest version of Cassandra? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Notice that BSTR strings store their length before start of the text. V3555. Use of '\0xNN' characters. This means that the second 'if' statement is senseless. Possible exception: type marked by [Serializable] contains non-serializable members not marked by [NonSerialized]. V2501. V833. OWASP. Loop may execute incorrectly or may not execute at all. This file is marked with copyleft license, which requires you to open the derived source code. V5005. If you have parameters instead of "void" in your function's parentheses you have to return something. V758. Class that contains pointers, constructor and destructor is copied by the automatically generated operator= or copy constructor. V680. Variables are initialized through the call to the same function. OWASP. The functions from time.h/ctime should not be used. Suspicious assignment inside the conditional expression of 'if/while/for' statement. V721. V2010. It is not recommended to return null or throw exceptions from 'ToString()' method. It is suspicious that the assignment operator takes an object by a non-constant reference and returns this object. If you do this, the last statement before End Function should be a Return statement. V1062. The size of the dynamic array can be less than the number of elements in the initializer. V3141. There are two 'if' statements with identical conditional expressions. The consent submitted will only be used for data processing originating from this website. Same value is present on both sides of the operator. Consider inspecting 'X'. V303. The compiler has been asked to treat warnings as errors. Consider casting operands, not the result. Possible error in program's logic. Presence of #line directives may cause some diagnostic messages to have incorrect file name and line number. Consider inspecting the expression. Do not define an unnamed namespace in a header file. Consider synchronizing the field on all usages. :' operator, regardless of its conditional expression, always returns the same value. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? V6009. Explicit conversion from 32-bit integer type to memsize type. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Features from should not be used. Exceptions raised inside noexcept functions must be wrapped in a try..catch block. MISRA. Suspicious pointer arithmetic with 'malloc/new'. Potentially tainted data is used to create an object using deserialization. Extracting arguments from a list of function calls. Use the RtlSecureZeroMemory() function to erase private data. Expression used in condition should have essential Boolean type. V719. nlohmann/json.hpp:20877:5: warning: non-void function does not return a value in all control paths [-Wreturn-type]. V3081. Code contains collection of similar blocks. V598. If expression is omitted, the return value of the function is undefined. V533. V2512. V699. The 'throw' keyword could be missing. Its representation is implementation-defined. V3163. A value of variable is not modified. V505. It is possible that an error is present. V1003. Postfix increment/decrement is senseless because this variable is overwritten. Code formatting implies that the statement should not be a part of the 'then' branch that belongs to the preceding 'if' statement. Hi, been using 2.0.1 so far over the proposed workaround (void function instead of non-void function). Connect and share knowledge within a single location that is structured and easy to search. MISRA. V3100. Conditional expressions of 'if' statements located next to each other are identical. Property accessors use different backing fields. V566. Expression of sizeof(T)*N kind is summed up with pointer to T type. V2595. MISRA. V5001. V2559. Flowing off the end of a non-void function with no 'return' results in undefined behavior. One is enough. Class initialization cycle is present. The 'A' class containing IDisposable members does not itself implement IDisposable. MISRA. V2510. V1085. V5305. It can possibly be replaced by the call to the 'find' function. Virtual table pointer will be damaged. 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. Declaration should contain no more than two levels of pointer nesting. Dangerous cast of 'this' to 'void*' type in the 'Base' class, as it is followed by a subsequent cast to 'Class' type. It causes the function to return to the caller immediately. V594. An excessive type cast or check. Potential use of invalid data. V535. MISRA. V3173. Potentially unsafe double-checked locking. V669. MISRA. It is possible that other value should be present instead of '0'. Temporary object is immediately destroyed after being created. An enumeration was declared with 'Flags' attribute, but does not set any initializers to override default values. Consider inspecting the expression. Pointer to array is out of array bounds. The 'bar2.h' header will be excluded from compilation. Cyclomatic complexity: NN. The '? The identifier 'main' should not be used for a function other than the global function 'main'. Perhaps another variable should be incremented instead. The operator evaluates both operands. use custom JSON_THROW_USER without exceptions. Dangerous call of 'Foo' function. Buffer overflow is possible. It's odd that this method always returns one and the same value of NN. Consider replacing methods: 'insert' -> 'emplace', 'push_*' -> 'emplace_*'. V1020. It is possible that this 'else' branch must apply to the previous 'if' statement. Consider naming the object. It is possible that 'i < X.size()' should be used instead of 'X.size()'. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Function receives an odd argument. The value range of the variable: [A, B]. Constructor parameter is not used. V1057. Expression containing increment (++) or decrement (--) should not have other side effects. AUTOSAR. V2561. Possible exception when deserializing type. the first printHi() in the above example), were calling a function for its behavior, not its return value. Expression resulting from the macro expansion should be surrounded by parentheses. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. V824. The value of uninitialized variable should not be used. Suspicious access to element by a constant index inside a loop. Youll need to comment out this line of code in order to make your code compile. Expression is enclosed by parentheses twice: ((expression)). V599. V1073. Every 'switch' statement should have a 'default' label, which, in addition to the terminating 'break' statement, should contain either a statement or a comment. V633. V1011. Abnormality within similar comparisons. This may break the program's logic. V646. Consider using 'i + 1' instead. Did the drapes in old theatres actually say "ASBESTOS" on them? Using 'std::move' function's with const object disables move semantics. V3131. An alternative would be to have the default setting of Wreturn-type depend on flag_isoc99. V3122. Parameter is not utilized inside method's body. It is possible that different variables are used inside initializer and iterator. V1094. Buffer needs to be securely cleared on all execution paths. It is possible that the number of elements should be calculated by sizeof(A)/sizeof(A[0]). Do not concatenate string literals with different prefixes. The 'goto' statement shouldn't jump to a label declared earlier. V3140. The sizeof() operator returns pointer size instead of array size. The second function call to function printHi() wont even compile. V1034. V3152. Terminal null is present inside a string. The code can be rewritten as either: Although you report testing the former option, GCC will not report the warning in this case, so I believe your test was faulty, such as compiling code other than what you intended to compile. The function expects the file to be opened in one mode, but it was opened in different mode. V3171. WPF: A class containing registered property does not correspond with a type that is passed as the ownerType.type. V662. V2528. It's probably an error or un-optimized code. V509. Consider inspecting the expression. V3052. Odd semicolon ';' after 'if/for/while' operator. Function 'Foo' writes/reads 'N' bytes. The 'static' keyword shall not be used between [] in the declaration of an array parameter. Consider assigning event to a local variable before invoking it. V6073. V1001. V812. V2613. Possible NoSQL injection. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Consider making it implement 'IDisposable' interface. MISRA. Excessive type casting: string -> char * -> string. Some of the references in project are missing or incorrect. MISRA. Some statements require values to be provided, and others dont. MISRA. Expression resulting from the macro expansion should be surrounded by parentheses. The conditional expressions of the 'if' statements situated alongside each other are identical. 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. V779. V1026. A 'wchar_t *' type string is incorrectly converted to 'BSTR' type string. V3045. MISRA. Do not warn if a caller of a function marked with attribute warn_unused_result (see Variable Attributes) does not use its return value. V574. V3057. C compiling Error: non-void function does not return a value in all control paths - CS50. Consider inspecting the 'Foo' function call. MISRA. The same sub-expression is present on both sides of the operator. The 'strcmp' function returns 0 if corresponding strings are equal. Consider inspecting the function call. Thanks for contributing an answer to Stack Overflow! Functions should not be declared at block scope. N argument has memsize type. V2618. compareTo()-like methods can return not only the values -1, 0 and 1, but any values. OWASP. Unions should not be used. Here is my code: why does it show compile error?? V2608. V3035. V3112. The 'x' variable is assigned values twice successively. Class member is initialized with dangling reference. MISRA. Anonymous function is used to unsubscribe from event. Consider replacing the call to the 'at()' method with the 'operator[]'. Suspicious return of an always empty collection. V2580. What if I write return statement in constructor? V1017. CS50 Stack Exchange is a question and answer site for students of Harvard University's CS50. Loop break conditions do not depend on the number of iterations. V811. The SUCCEEDED or FAILED macro should be used instead. The code's operational logic does not correspond with its formatting. Consider inspecting the condition. The 'X' counter is not used inside a nested loop. See documentation for details. Array is used as pointer to single object. It is possible that 'else' block was forgotten or commented out, thus altering the program's operation logics. One of the operands in the operation equals NN. V3523. V3533. V3548. operators are used for accessing members of the same object. The variable can be constructed in a lower level scope. V1014. Suspicious subexpression in a sequence of similar comparisons. It is possible that an incorrect variable is compared with null after type conversion using 'dynamic_cast'. Classes that define 'equals' method must also define 'hashCode' method. Consider inspecting the expression. The 'Foo' function is called twice in the specified expression to calculate length of the same string. The second condition is always false. V3030. This may be a potential error. V221. AUTOSAR. Subtraction, >, >=, <, <= should be applied only to pointers that address elements of the same array. V830. V2539. V1074. Value of the expression should not be converted to the different essential type or the narrower essential type. One of the function's arguments has the same name and this argument is a reference. V1050. A switch-expression should not have Boolean type. AUTOSAR. (This const / volatile distinction is not important.) V1053. V673. V1091. V3148. It may happen that flow is never reaching that part of the code but it is important to write for the compiler. Arrays should not be partially initialized. V1049. V1029. MISRA. AUTOSAR. V114. The "" closing tag was encountered, while the "" tag was expected. Probably meant: 'CC::AA()'. Derived class object was copied to the base class object. Exception classes should be publicly accessible. Two or more case-branches perform the same actions. V051. V009. V661. V3180. Unary minus operator should not be applied to an expression of the unsigned type. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. The 'A' class contains 'Dispose' method. In a prior lesson (2.1 -- Introduction to functions), we indicated that the syntax for a function definition looks like this: Although we showed examples of functions that had return-type void, we did not discuss what this meant. V3138. V2565. AUTOSAR. Use a plain return statement to make your intent clear. Void functions don't need a return statement A void function will automatically return to the caller at the end of the function. Consider pre-allocating it by calling reserve(N). OWASP. Consider implementing event accessors explicitly or use 'sealed' keyword. V3048. Use memsize type instead. V695. V783. The '//' and '/*' character sequences should not appear within comments. Unable to start the analysis on this file. V834. The first 'if' statement contains function return. V3536. The result of an assignment expression should not be used. Remember that members are initialized in the order of their declarations inside a class. V664. Operand that is a composite expression has more narrow essential type than the other operand. Implicit type conversion of return value from memsize type to 32-bit type. Suspicious getter/setter implementation. Memory allocation will lead to an exception. V610. V1037. Exception was thrown by pointer. V3158. V658. Expressions with enum underlying type should have values corresponding to the enumerators of the enumeration. Microsoft-specific: In the Microsoft C implementation, the long long type is large enough to hold the product of two int values without overflow. Learn more about Stack Overflow the company, and our products. V1005. Dereferencing the result of 'as' operator can lead to NullReferenceException. AUTOSAR. Length of function body or class declaration is more than 2000 lines. Pointer was used before its check for nullptr. Pointer to local variable 'X' is stored outside the scope of this variable. Expression's value is copied at the variable declaration. Avoid using 'this == 0' comparison. Unchecked tainted data is used in expression. Connect and share knowledge within a single location that is structured and easy to search. Two similar code fragments were found. The standard input/output functions should not be used. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? Code contains invisible characters that may alter its logic. :' operator has a lower priority than the 'foo' operator. V1025. Referenced package contains vulnerability. V584. Diagnostics from the 64-bit rule set are not entirely accurate without the appropriate 64-bit compiler. V6002. V806. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, C, error: control reaches end of non-void function [-Werror,-Wreturn-type], Control may reach end of non-void function [-Werror,-Wreturn-type]. V684. This expression can be simplified. V6096. Constant expression in switch statement. Consider using a comparison with defined precision: fabs(A - B) < Epsilon or fabs(A - B) > Epsilon. I compiled a small program containing the following function definition. Potential logical error. V3508. Use filter buttons or 'Don't Check Files' settings to enable message display. V2569. V5612. V2517. MISRA. V2567. Consider assigning event to a local variable before invoking it. MISRA. Decreased performance. V5609. The 'if (A) {} else if (A) {}' pattern was detected. Update: You need to make your function return a vector in every condition as suggested in comments. V3126. V634. V641. How do I count the number of sentences in C using ". Then, enable it by default, but also make it be enabled by Wpedantic and Wreturn-type. V524. The 'static' storage class specifier should be used in all declarations of object and functions that have internal linkage. The 'Thread' object is created but is not started. Potentially negative value is used as the size of an array. 'else' keyword is probably missing. V2019. This can quickly overflow stack. V6101. Function returns pointer/reference to temporary local object. Variables are initialized through the call to the same function. (This const / volatile distinction is not important.) V3549. Comma operator ',' in array index expression. Check for typos and consider using the 'default:' operator instead. V665. It achieves the same as what you have but it only will add a line instead of modifying the whole function body, and it will be one allocation less ( int val = 0; ). V6074. Incorrect diagnostics are possible. Unconditional 'break/continue/return/goto' within a loop. V1081. Unreachable code should not be present in the project. Conditional expression of 'if' statement is incorrect for the HRESULT type value 'Foo'. V776. V2550. An identifier with array type passed as a function argument should not decay to a pointer. MISRA. When we call a function in a context that requires a value (e.g. Consider inspecting the expression. V604. Storing credentials inside source code can lead to security issues. V3062. Analysis aborted by timeout. The body of a loop\conditional statement should be enclosed in braces. The value is assigned to the 'x' variable but is not used. great work. This causes implementation-defined behavior. 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. V2553. The 'new type(n)' pattern was detected. Two identical text blocks were detected. The 'operator &&', 'operator ||', 'operator ,' and the unary 'operator &' should not be overloaded. V832. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? Consider re-generating your suppress file to continue updating it. V2518. An item with the same key has already been added. OWASP. The object was used before it was verified against null. V5606. V3021. Expression of the 'A =- B' kind is used.
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