Passing 'BSTR ' to the 'SysAllocString' function may lead to incorrect object creation. V576. V637. Void functions dont need a return statement. Comparing objects of incompatible types. Possible NullReferenceException. An excessive type cast or check. Decreased performance. Member invocation on this value may lead to an exception. A function name may be missing. One of the operands in the operation equals NN. It is suspicious that it is used as a variable of a Boolean-type. Not all the members of type are serialized inside 'GetObjectData' method. Potentially tainted data is used in a search filter. V582. It can result in an overflow. An array/object was declared but was not utilized. The passed line may contain format specification. The expression is excessive or contains a logical error. Conversion between pointers of different object types should not be performed. Possible LDAP injection. Controlling expressions should not be invariant. The 'foo' include guard is already defined in the 'bar1.h' header. V3048. V796. However, in modern programming they are more accepted, particularly when they can be used to make a function simpler, or are used to abort a function early due to some error condition. V3151. warning: 'return' with a value, in function returning void 2. 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 . Is it safe to publish research papers in cooperation with Russian academics? It is possible that '1' should be present instead of '0'. OWASP. Suspicious division. In this case, the return value of the called function is undefined. V672. V650. V3177. Variable should be declared in a scope that minimizes its visibility. Giving short names to global variables is considered to be bad practice. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? If no return statement appears in a function definition, control automatically returns to the calling function after the last statement of the called function is executed. V516. V127. V654. Numeric Truncation Error. This file is marked with copyleft license, which requires you to open the derived source code. The 'then' statement is equivalent to the 'else' statement. V3017. Why are players required to record the moves in World Championship Classical games? Consider inspecting the statement of '*pointer++' pattern. Void functions don't need a return statement A void function will automatically return to the caller at the end of the function. The condition (ptr - const_value) is only false if the value of a pointer equals a magic constant. MISRA. There is a probability of logical error presence. Exception classes should be publicly accessible. V810. V3043. Character escape is used in multicharacter literal. If the function has a return type other than void, it's a serious bug, and the compiler prints a warning diagnostic message. The result of the right shift operation will always be 0. Consider inspecting 'X'. It's possible that 'else' keyword is missing. This may lead to undefined behavior. One is enough. Copying from potentially tainted data source. MISRA. int sometimes ( int x) { if (x > 0) { return 2*x; } } The opportunity to suppress the warning was overlooked. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. V1097. V597. A memory leak will occur in case of an exception. Syntax: return[expression]; There are various ways to use return statements. V5304. V688. Function marked as 'noreturn' may return control. V3146. V1049. V1026. AUTOSAR. Suspicious code formatting. Then the ',' operator returns a resulting value from the right side of the expression. It is suspicious that variable is initialized through itself. V6024. To learn more, see our tips on writing great answers. Consider inspecting the expression. OWASP. It is more efficient to search for 'X' character rather than a string. Number of elements in the allocated array equals the size of a pointer in bytes. V790. The expression is checked for compatibility with the type 'A', but is casted to the 'B' type. Implicit type conversion from memsize to double type or vice versa. The object was created but it is not being used. V3116. The 'a' variable was used after it was assigned through null-conditional operator. Casts between a pointer to an incomplete type and any other type shouldn't be performed. Consider inspecting the expression. Value is subtracted from unsigned variable. It is possible that there is an error. It is inefficient to identify an empty string by using 'strlen(str) > 0' construct. OWASP. Every switch-clause should be terminated by an unconditional 'break' or 'throw' statement. V5612. V756. Conversions should not be performed between pointer to function and any other type. Consider using an explicit type cast to avoid overflow or loss of a fractional part. V2590. A pointer/reference parameter in a function should be declared as pointer/reference to const if the corresponding object was not modified. Unconditional 'break/continue/return/goto' within a loop. V5626. V6069. V782. Consider inspecting it. V3067. The '#pragma warning(push/pop)' should be used instead. Unary minus operator does not modify a bool type value. V3166. Destructor of 'Foo' class is not declared as virtual. Operand of sizeof() operator should not have other side effects. V2512. Subtraction, >, >=, <, <= should be applied only to pointers that address elements of the same array. V783. My statement was question specific. V6085. Incorrect diagnostics are possible. Passing the value into the 'Foo' method will result in an exception. great work. Functions should not have unused parameters. V002. AUTOSAR. V2016. Moving an object in a return statement prevents copy elision. Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? V1053. The assignment operator should be protected from the case of 'this == &src'. The variable in the loop exit condition does not change its value between iterations. The global namespace should only contain 'main', namespace declarations and 'extern "C"' declarations. A value of variable is not modified. V639. V2538. It is likely that a wrong variable is being compared inside the 'for' operator. Variable of the 'string_view' type references a temporary object, which will be removed after evaluation of an expression. Consider inspecting the 'Foo' function call. A private Ctor(SerializationInfo, StreamingContext) constructor in unsealed type will not be accessible when deserializing derived types. V699. Undefined behavior. MISRA. Executing this query may lead to an error. Consider using of 'if-else' construct. Possible XPath injection. MISRA. V2546. V653. Possibly 'Total*' value was intended instead. Probably it is a mistake. MISRA. Such a pointer will become invalid. OWASP. V3152. The return value of non-void function should be used. ", "!"? In such a context, we can only call value-returning functions. V711. An overflow of the 32-bit variable is possible inside a long cycle which utilizes a memsize-type loop counter. Notice that BSTR strings store their length before start of the text. V627. What is an early return, and what is its behavior? In this case, we can call either a non-value returning function, or we can call a value-returning function and just ignore the return value. Consider checking for misprints. Do not define an unnamed namespace in a header file. The address of an object with local scope should not be passed out of its scope. Bit shifting of the 32-bit value with a subsequent expansion to the 64-bit type. It is odd that the body of 'Foo_1' function is fully equivalent to the body of 'Foo_2' function. Consider inspecting the expression. Variable is assigned but not used by the end of the function. V6094. Allocation of memory by the pattern "(X*)malloc(sizeof(Y))" where the sizes of X and Y types are not equal. AUTOSAR. OWASP. V659. Classes should always be derived from std::exception (and alike) as 'public'. V1057. Type casting is used 2 times in a row. The 'if/if-else/for/while/foreach' statement and code block after it are not related. V3512. V1044. MISRA. V3094. What is scrcpy OTG mode and how does it work? V3502. AUTOSAR. A value is being subtracted from the unsigned variable. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. V1096. Consider inspecting signed and unsigned function arguments. To learn more, see our tips on writing great answers. V642. Declaring virtual methods in a class marked as 'final' is pointless. V2542. The 'X' counter is not used inside a nested loop. Object created using 'new' operator is immediately cast to another type. The operation is executed 2 or more times in succession. This leads to the variable binding to a temporary object instead of a range element. MISRA. Consider replacing this function with 'std::uncaught_exceptions'. AUTOSAR. V2600. It is possible that different variables are used inside initializer and iterator. Shift by N bits is greater than the size of type. V656. A component of TimeSpan is used, which does not represent full time interval. (This const / volatile distinction is not important.) By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. OWASP. V725. V762. To compile the example, create a source code file named C_return_statement.c. Find centralized, trusted content and collaborate around the technologies you use most. V657. Parameter is always rewritten in function body before being used. An identifier declared in an inner scope should not hide an identifier in an outer scope. A 'wchar_t *' type string is incorrectly converted to 'BSTR' type string. The original exception object was swallowed. AUTOSAR. V3121. 2.3 Void functions (non-value returning functions) V5628. V2007. V3170. Extending 'std' or 'posix' namespace may result in undefined behavior. Consider inspecting virtual function arguments. There should be no attempt to write to a stream that has been opened for reading. Return value of function is written to N-bit variable. 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. V3504. V2588. Class initialization cycle is present. B is never printed because the statement never executes. V3138. Examine the substrings "abc" and "abcd". A Function procedure has at least one possible path through its code that does not return a value. Consider inspecting the expression. Assigning potentially negative or large value as timeout of HTTP session can lead to excessive session expiration time. Octal constants should not be used. The 'Foo' function receives the pointer and its size as arguments. V3018. No handlers will be unsubscribed, as a separate delegate instance is created for each anonymous function declaration. V673. It is possible that these are misprints and 'default:' label should be used instead. V626. V758. V2598. V641. V3136. V6004. V3009. V2521. If you are treating warnings as errors, you may need to temporary disable that setting in order to compile the example. A smart pointer may not destroy an object correctly. The 'throw' keyword could be missing. V2587. V556. Undefined behavior will occur in case of signed integer overflow. It is suspicious to cast object of base class V to derived class U. V718. MISRA. 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. V1036. Unions should not be used. V015. C++ | Delft Return value of 'wcslen' function is not multiplied by 'sizeof(wchar_t)'. V3026. The class implements a copy constructor/operator=, but lacks the operator=/copy constructor. V728. Thanks for contributing an answer to Stack Overflow! Dangerous construction is used: 'm[x] = m.size()', where 'm' is of 'T' class. Generating points along line with specifying the origin of point generation in QGIS. V1045. 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. V6014. V3072. Exception is of the 'int' type because NULL is defined as 0. A switch-label should only appear at the top level of the compound statement forming the body of a 'switch' statement. Defining an absolute path to the file or directory is considered a poor style. Passing objects of incompatible types to the method of collection. V773. It makes code less human error prone. Consider using 'i + 1' instead. This condition was already verified in previous line. The same sub-expression is present on both sides of the operator. The result of '&' operator is always '0'. V552. What happens to the returned value, if one is specified, depends on the implementation. V3061. The value is assigned to the 'x' variable but is not used. V009. Halt! In the name of C++; or why C++ functions don't need a return Argument of sizeof() is a macro, which expands to a number. An exception handling block does not contain any code.
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