V807. V3536. AUTOSAR. V6040. The macro with the 'setjmp' name and the function with the 'longjmp' name should not be used. If no value is provided, the compiler will produce a syntax error. MISRA. V6073. V1026. V1067. Automatic unboxing of a variable may cause NullPointerException. Perhaps a short-circuit operator should be used instead. Literal suffixes should not contain lowercase characters. Some diagnostic messages may contain incorrect line number. The field (property) is used before it is initialized in constructor. V568. V810. Compound assignment expression is used inside condition. V5011. MISRA. V1046. Implicit assignment type conversion to memsize type. 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Halt! In the name of C++; or why C++ functions don't need a return V2620. V1044. While, on the other hand, if we try to use/call some function to complete the throw, it is facing the well known error/warning of: no return statement in function returning non-void. The 'value' parameter is rewritten inside a property setter, and is not used after that. Undefined behavior. V3144. Be advised that the size of the type 'long' varies between LLP64/LP64 data models. V552. Consider assigning event to a local variable before invoking it. V1048. AUTOSAR. It is possible that ',' comma is missing at the end of the string. It is safer to use the 'foo' function. V6053. V2592. V590. C-style explicit type casting is utilized. V510. V3163. Variable 'foo' was assigned the same value. The parentheses around the return expression in square are evaluated as part of the expression, and aren't required by the return statement. One of closing ')' parentheses is probably positioned incorrectly. Consider inspecting the expression. V550. V716. MISRA. This may lead to ODR violation. use custom JSON_THROW_USER without exceptions. How to Make a Black glass pass light through it? V1025. Variable was compared to zero before it was used as a divisor. Execution resumes in the calling function at the point immediately following the call. A pattern was detected: A || (A && ). For more information, see "Behavior" in Function Statement. V833. Memory allocation will lead to an exception. C-style and functional notation casts should not be performed. He also rips off an arm to use as a sword. Consider making it implement 'IDisposable' interface. V798. Usage of non memsize type for pointer arithmetic. Identical expression to the left and to the right of compound assignment. The '+' operation is executed. Value of variable is not modified. The '//' and '/*' character sequences should not appear within comments. V3522. V007. Value of the expression should not be converted to the different essential type or the narrower essential type. V726. Consider inspecting the expression. Identifiers that start with '__' or '_[A-Z]' are reserved. Parameter 'A' is always rewritten in method body before being used. Implementation of 'compareTo' overloads the method from a base class. This may lead to undefined behavior. A boy can regenerate, so demons eat him for years. Suspicious access to element by a constant index inside a loop. Some of the references in project are missing or incorrect. The function with the 'abort/exit/getenv/system' name should not be used. Parameter 'A' is always rewritten in method body before being used. V3069. The expression is incorrect or it can be simplified. Argument of sizeof() is a macro, which expands to a number. V1030. V6075. Object was created but not used. V2538. Consider implementing event accessors explicitly or use 'sealed' keyword. The 'x' variable is assigned values twice successively. The 'Thread' object is created but is not started. Congratulations! OWASP. Value of a composite expression should not be cast to a different essential type category or a wider essential type. Potential XXE vulnerability. A private Ctor(SerializationInfo, StreamingContext) constructor in unsealed type will not be accessible when deserializing derived types. Conversions between pointers to objects and integer types should not be performed. 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). V6029. V6055. Consider inspecting the expression. String literal should not be assigned to object unless it has type of pointer to const-qualified char. Suspicious division. The analyzer has detected a non-void function with an execution path that does not return a value. V754. V653. Consider wrapping the throw operator in a try..catch block. ", "!"? OWASP. V3523. Consider inspecting usage of 'Y' counter. V2009. Creating an object with placement new requires a buffer of large size. V2506. The passed line may contain format specification. V773. Possible incorrect order of arguments passed to method. Possible exception when serializing type. V2617. V835. The values used in expressions should have appropriate essential types. Non-null function pointer is compared to null. V3520. 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; ). A return statement can return a value to the calling function. That's because exit is marked as [[noreturn]]. V741. OWASP. MIP Model with relaxed integer constraints takes longer to solve than normal model, why? This return value is also printed. This leads to undefined behavior. Consider using '||' and '&&' instead. Features from should not be used. Quoting from gcc warning options page: -Wno-unused-result. V2013. OWASP. An exception should be caught by reference rather than by value. A switch-label should only appear at the top level of the compound statement forming the body of a 'switch' statement. V2607. Probably it is a mistake. cs50 - C error: non-void function does not return a value in all density matrix. Possible null dereference. The object is already of the same type. Awaiting on expression with potential null value can lead to throwing of 'NullReferenceException'. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? A function that does not return a value is called a non-value returning function (or a void function). V731. OWASP. V6086. An excessive type cast or check. AUTOSAR. I did return true and false but its still giving me this error [deleted] 2 yr. ago More posts you may like Consider inspecting the return statement. V2519. If control passes to Exit Function or End Function and you have not assigned any value to the procedure name, the procedure returns the default value of the return data type. V3061. Buffer size is not a multiple of element size. V764. V2540. The 'static' storage class specifier should be used in all declarations of object and functions that have internal linkage. Every 'switch' statement should have a 'default' label, which, in addition to the terminating 'break' statement, should contain either a statement or a comment. Without re-registering for finalization, destructor will not be called a second time on resurrected object. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Expression resulting from the macro expansion should be surrounded by parentheses. Both operands of the '??' Value of variable is checked after use. V6085. One, the C standard specifies the behavior of, C error: non-void function does not return a value in all control paths [-Werror,-Wreturn-type], the assembly GCC 11.2 generates for this with, testing by changing the function return type to int and changing the returns to, How a top-ranked engineering school reimagined CS curriculum (Ep. MISRA. This may lead to undefined behavior. V3146. V3530. Suspicious function declaration. It is not advised to declare type 'T' as 32-bit type. V2560. Incorrect shifting expression. operator are identical. The 'if (ptr != NULL)' check can be removed. V1004. V6096. Two similar code fragments were found. OWASP. Try to avoid many return statements in your code. Its priority is lower than priority of other operators in its left part. An exception handling block does not contain any code. The 'X' counter is not used inside a nested loop. An identifier with array type passed as a function argument should not decay to a pointer. MISRA. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? AUTOSAR. Use _beginthreadex/_endthreadex functions instead of CreateThread/ExitThread functions. For example: In the above example, the printHi function has a useful behavior (it prints Hi) but it doesnt need to return anything back to the caller. Check items X, Y, Z, in lines N1, N2, N3, V526. Passing the value into the 'Foo' method will result in an exception. It is easier to guarantee that every return from the procedure returns a value if you always use the Return statement. Variable is declared as auto in C. Its default type is int. Check for missing 'throw' keyword. Silent suppression of exceptions can hide errors in source code during testing. Consider inspecting the 'T foo = foo = x;' expression. V3125. V802. V2517. The analyzer has detected a non-void function with an execution path that does not return a value. V5004. AUTOSAR. ps: thanks for the awesome library. Function marked as 'noreturn' may return control. Perhaps, it is a typo and 'X' variable should be used instead of 'Y'. V1029. V637. V812. V6003. TYPE X[][] is not equivalent to TYPE **X. V1069. V3053. Save the file, and compile it in a Developer command prompt window by using the command: Then, to run the example code, enter C_return_statement.exe at the command prompt. The outer type contains static field/property with identical name. The true value (VARIANT_TRUE) is defined as -1. g++ How to get warning on ignoring function return value Expression of essential type 'foo' should not be explicitly cast to essential type 'bar'. Code contains collection of similar blocks. Iterators for the container, used in the range-based for loop, become invalid upon a function call. V6087. One pair of parentheses is unnecessary or typo is present. V586. Functions are not required to return a value back to the caller. Find centralized, trusted content and collaborate around the technologies you use most. The passing of data to or from this function may be affected. V2003. Implicit type conversion to memsize type in an arithmetic expression. Consider inspecting the 'foo' function. V3509. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Cast should not convert pointer to function to any other pointer type. V2534. Pointer is cast to a more strictly aligned pointer type. V789. Pointer was used after the memory was released. The 'foo' word is suspicious. Consider utilizing 64-bit compiler if possible. OWASP. This leads to undefined behavior. V2578. It's possible that 'else' keyword is missing. V801. V1024. NullReferenceException is possible. Size of an array is not specified. Here is a full example. The macro with the 'setjmp' name and the function with the 'longjmp' name should not be used. Expression was implicitly cast from integer type to real type. Possible use of left shift operator instead of comparison operator. V818. V2006. Inconsistent synchronization of a field. V221. No more than one iteration of the loop will be performed. V799. V1086. Decreased performance. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? Remember that members are initialized in the order of their declarations inside a class. V695. V6070. Flowing off the end of a non-void function with no 'return' results in undefined behavior. Not all the members of type are serialized inside 'GetObjectData' method. V700. V3023. The '<' operator should probably be replaced with '<<'. @Sneftel Good point. V3134. V2509. AUTOSAR. Consider inspecting type casting. V3188. return statement in C++ with Examples - GeeksforGeeks V3121. V3020. Consequently, the function needs to have a statement that returns the object of the corresponding type. V708. V778. V3083. The first 'if' statement contains function return. The return value of non-void function should be used. V604. EOF should not be compared with a value of the 'char' type. V602. Code formatting implies that the statement should not be a part of the 'then' branch that belongs to the preceding 'if' statement. After each of these function calls, execution continues at the next statement. The first statement in print() prints A. V2608. Range intersections are possible within conditional expressions. V750. V6099. V2502. Macro name overrides a keyword/reserved name. Such functions are usually marked '[[noreturn]]'. To compile the example, create a source code file named C_return_statement.c. Consider replacing the use of 'std::optional::value()' with either the '*' or '->' operator. Void functions are created and used just like value-returning functions except they do not return a value after the function executes. Calling a virtual (overridden) event may lead to unpredictable behavior. Consider passing the 'Foo' argument as a pointer/reference to const. MISRA. V548. The second condition is always false. Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). The 'A' function was called several times with identical arguments. V6016. Passing objects of incompatible types to the method of collection. Possibly, an override was intended. V787. V6022. V6092. Consider assigning value to 'foo' variable instead of declaring it anew. Consider inspecting this expression. Probably meant: *ptr = zero. Potential logical error. There are two 'if' statements with identical conditional expressions. Possible error in program's logic. This presents the compiler with a contradicting declaration and return. V1043. WPF: the type registered for DependencyProperty does not correspond with the type of the property used to access it. Check your control flow logic and make sure you assign a value before every statement that causes a return. Potential XEE vulnerability. When compiling the above example, your compiler may issue a warning about line 9 being unreachable. Single-bit bit fields should not be declared as signed type. AUTOSAR. MISRA. Postfix increment/decrement is senseless because this variable is overwritten. Unconditional 'break/continue/return/goto' within a loop. V3114. V3012. Empirical analysis. V3156. V1039. V2015. Value of 'char' type is added to a string pointer. V2542. The object was created but it is not being used. V805. V831. Avoid using 'this == 0' comparison. Here is my code: why does it show compile error?? "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. AUTOSAR. V2555. There is an easy solution to the problem, even if we understand that every condition is covered we should add a return statement at the end of the function so the compiler is sure that the non-void function will be returning some value. Possible server-side request forgery. The argument was passed to method several times. V1016. V203. The expression contains a comma. Suspicious comparison found: 'a == b == c'. V811. The used constant value is represented by an octal form. 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. Destructor of 'Foo' class is not declared as virtual. It's odd that this method always returns one and the same value of NN. V585. The variable of char type is compared with pointer to string. V2559. The 'malloc' function is used to allocate memory for an array of objects that are classes containing constructors/destructors. NullReferenceException is possible. The 'then' statement is equivalent to the 'else' statement. Ineffective use of the 'count' function. If expression is omitted, the return value of the function is undefined. Operand of sizeof() operator should not have other side effects. Exception classes should be publicly accessible. New variable with default value is created instead of 'std::unique_lock' that locks on the mutex. 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. V010. MISRA. V591. Possible open redirect vulnerability. There are two 'if' statements with identical conditional expressions. It is possible that 'foo = bar == baz ? V301. V5624. . V1070. V2616. This is the same thing that happens at the end of the function anyway. There are identical sub-expressions to the left and to the right of the 'foo' operator. Property accessors use different backing fields. Compound assignment expression 'X += X + N' is suspicious. V5610. OWASP. The argument should probably be rendered as a constant pointer/reference. What is this brick with a round back and a stud on the side used for? V650. A 'wchar_t *' type string is incorrectly converted to 'BSTR' type string. V1031. Possible missing parentheses. This value is already assigned to the 'b' variable. V3182. MISRA. Significant bits may be lost. Find centralized, trusted content and collaborate around the technologies you use most. AUTOSAR. Program contains an unused label and function call: 'CC:AA()'. Length of function body or class declaration is more than 2000 lines. V596. V512. Suspicious operation of 'sizeof(X)/sizeof(T)' kind, where 'X' is of the 'class' type. The default is -Wunused-result. V3021. Consider reviewing this value. :' operator, regardless of its conditional expression, always returns the same value. V3179. V523. Inappropriate attempt to append a null character to a string. operators are used for accessing members of the same object. The assignment to a member of the readonly field will have no effect when the field is of a value type. AUTOSAR. V009. V1097. The expression is checked for compatibility with the type 'A', but is casted to the 'B' type. Consider specifying execution policy explicitly. From what I can gather online, this means that I am not returning a value from my function? On 32-bit/64-bit platform, structure size can be reduced from N to K bytes by rearranging the fields according to their sizes in decreasing order. V3045. V672. MISRA. OWASP. Object was created but is not used. A 32-bit variable is utilized as a reference to a pointer. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Suspicious type cast: 'Type1' to ' Type2'. Recurrent serialization will use cached object state from first serialization. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Variable with static storage duration is declared inside the inline function with external linkage. Use of outdated cryptographic algorithm is not recommended. If you are treating warnings as errors, you may need to temporary disable that setting in order to compile the example. V2550. V3174. Calling an overridden method in parent-class constructor may lead to use of uninitialized data. Function receives an odd argument. V534. When main calls printHi, the code in printHi executes, and Hi is printed. Storing credentials inside source code can lead to security issues. The second block starts with NN string. V745. Attempt to free memory containing the 'int A[10]' array by using the 'free(A)' function. Consider assigning the seed to a value not known at compile-time. V3025. Void functions don't need a return statement A void function will automatically return to the caller at the end of the function. I will edit. V3075. Analysis of 'Makefile/Utility' type projects is not supported in this tool. If you wish to call constructor, use 'this->Foo::Foo(.)'. V516. MISRA. Examine the substrings "abc" and "abcd". Comparison of arrays, strings, collections by reference. Identical sub-expressions to the left and to the right of 'foo' operator. Not the answer you're looking for? Incorrect index type: 'foo[not a memsize-type]'. V2010. A void function will automatically return to the caller at the end of the function. Unchecked tainted data is used in expression. MISRA. V3183. Check for typos and consider using the 'default:' operator instead. Consider creating a 'T' type object. MISRA. V205. V688. The functions from time.h/ctime should not be used. 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. When we call a function in a context that requires a value (e.g. Why Oracle let function (basic/nopipelined) without RETURN compile, and throws error in execution. Expressions with enum underlying type should have values corresponding to the enumerators of the enumeration. Thanks for helping to make the site better for everyone. V1009. Consider inspecting the expression. External object or function should be declared once in one and only one file. The 'static' storage class specifier should be used in all declarations of functions that have internal linkage. It is possible that the variable should be used instead of the string literal. V669. Type of variable enumerated in 'foreach' is not guaranteed to be castable to the type of collection's elements. V3031. File cannot be processed. V763. Recurring check. The variable was used to initialize itself. The DllMain function throws an exception. V660. Connect and share knowledge within a single location that is structured and easy to search.
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