warning non void function does not return a value

An unconditional 'break/continue/return/goto' within a loop. The resource was acquired using 'X' function but was released using incompatible 'Y' function. Potential logical error is present. V3542. Your message has been sent. V1005. Possible exception when serializing type. Functions should not be declared at block scope. Loop may execute incorrectly or may not execute at all. Numeric Truncation Error. Uninitialized class member is used when initializing the base class. Due to the way the compiler is constructed, warnings are generally reported early, and suppressing this warning based on later analysis would be difficult. It is recommended to use the 'make_unique/make_shared' function to create smart pointers. 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. Expression containing increment (++) or decrement (--) should not have other side effects. V702. V537. It is likely that a wrong variable is being compared inside the 'for' operator. MISRA. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. V3062. V3124. MISRA. The passed line may contain format specification. The same sub-expression is present on both sides of the operator. After each of these function calls, execution continues at the next statement. MISRA. Consider assigning the seed to a value not known at compile-time. V828. V110. Potential XXE vulnerability. Unsafe invocation of event, NullReferenceException is possible. V1048. V2564. The variable was utilized in the logical expression before it was verified against null in the same logical expression. V696. MISRA. The return value of the function should probably be compared with std::string::npos. The assignment to a member of the readonly field will have no effect when the field is of a value type. V3044. V1041. 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. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Violated order of exception handlers. V3100. V6064. V3018. Possible error in program's logic. Probably it is a mistake. V743. Unexpected function overloading behavior. If the function has a void return type, this behavior is okay, but may be considered poor style. Consider using the KK constant. V3539. If you have a function like throw_blah which is defined to never return, you can use the [[noreturn]] attribute to tell the compiler about it, and it will suppress the warning. Calling the 'SingleOrDefault' method may lead to 'InvalidOperationException'. Extracting arguments from a list of function calls. V6090. Syntax: return[expression]; There are various ways to use return statements. Consider using: static_cast/const_cast/reinterpret_cast. The analyzer has detected a non-void function with an execution path that does not return a value. It is not recommended to return null or throw exceptions from 'ToString()' method. Priority of the '&&' operator is higher than that of the '||' operator. The '?.' It causes the function to return to the caller immediately. If total energies differ across different software, how do I decide which software to use? Function receives an address of a 'char' type variable instead of pointer to a buffer. Object created using 'new' operator is immediately cast to another type. By default, this message is a warning. V791. Priority of '+' operation is higher than priority of '<<' operation. V695. What were the poems other than those by Donne in the Melford Hall manuscript? It's possible that the line was commented out improperly, thus altering the program's operation logics. The variable can be constructed in a lower level scope. Object slicing. MISRA. Suspicious type cast: 'Type1' to ' Type2'. V555. Function always returns the same value of NN. Does a password policy with a restriction of repeated characters increase security? Incorrect shifting expression. AUTOSAR. V2517. V1047. V2554. Not the answer you're looking for? Decreased performance. V3174. V1088. Consequently, the function needs to have a statement that returns the object of the corresponding type. MISRA. It can possibly be replaced by the call to the 'find' function. Dereferencing the result of 'as' operator can lead to NullReferenceException. Odd semicolon ';' after 'if/for/while' operator. Argument of incorrect type is passed to the 'Enum.HasFlag' method. Calling element access method for potentially empty collection may result in exception. Expression resulting from the macro expansion should be surrounded by parentheses. MISRA. The expression is incorrect or it can be simplified. V2582. V627. Consider inspecting usage of 'Y' counter. Possible XPath injection. V5602. V617. Explicit conversion from 32-bit integer type to pointer type. Copying can be replaced with move/swap for optimization. Label is present inside switch(). We and our partners use cookies to Store and/or access information on a device. V1044. AUTOSAR. V602. V1069. It demonstrates the return statement, and how it's used both to end function execution, and optionally, to return a value. 1. V6021. Consider assigning event to a local variable before invoking it. OWASP. V2507. Check for typos and consider using the 'default:' operator instead. It is suspicious that the argument of sizeof() operator is the expression. V3537. Be advised that the size of the type 'long' varies between LLP64/LP64 data models. V2594. V5002. 'else' keyword is probably missing. V113. V3158. What happens to the returned value, if one is specified, depends on the implementation. V3508. An identifier with array type passed as a function argument should not decay to a pointer. Consider checking the first actual argument of the 'Foo' method. Possible exception when deserializing type. Value of a composite expression should not be cast to a different essential type category or a wider essential type. V818. That's because exit is marked as [[noreturn]]. Analysis of 'Makefile/Utility' type projects is not supported in this tool. Non-void functions always have to have a return statement. V3154. V2614. OWASP. The pointer in the expression equals nullptr. V700. Possible null dereference. V3541. V2532. V124. N operand of '? It is possible that other value should be present instead of '0'. V3043. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? The expression is excessive or contains a logical error. Maximum size of a vector is known at compile time. This file is marked with copyleft license, which requires you to open the derived source code. MISRA. V5615. V6080. It means that there is no default return value for your function outside of the for loop. The 'strcmp' function returns 0 if corresponding strings are equal. MISRA. The 'Foo' pointer is always not equal to NULL. MISRA. The return value of non-void function should be used. V2504. Size of an array is not specified. Expression of the 'A - B > 0' kind will work as 'A != B'. V3150. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey. V681. To tell the compiler that a function does not return a value, a return type of void is used. MISRA. V5610. 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. What risks are you taking when "signing in with Google"? Suspicious explicit conversion from 'float *' type to 'double *' type. Consider inspecting type casting. AUTOSAR. The '&=' or '|=' operator is redundant because the right operand is always true/false. Consider inspecting the expression. 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. V5007. Consider casting operands, not the result. Consider inspecting the expression. Decreased performance. V2545. Suspicious explicit type casting. V3515. Unreachable code detected. My statement was question specific. Declaring virtual methods in a class marked as 'final' is pointless. V6036. malloc() function accepts a dangerous expression in the capacity of an argument. Return value of function is written to N-bit variable. Function receives suspicious argument. Consider re-generating your suppress file to continue updating it. Functions' declarations with 'Foo' name differ in 'const' keyword only, while these functions' bodies have different composition. std::cout), a value must be provided. V739. Use of constant NN. Appending new suppressed messages to it is not possible. The long long result is stored in squared, then printed. V798. V748. V3171. V6005. V677. V1011. The text was updated successfully, but these errors were encountered: Also, can you provide a minimal code sample that reproduces this issue? V1057. It is inefficient to identify an empty string by using 'strlen(str) > 0' construct. V3063. V2597. A pattern was detected: A || (A && ). The switch statement does not cover all values of the enum. V512. V3169. Thus, the warning is a very useful one and you should consider yourself lucky that the compiler noticed the bug. A part of conditional expression is always true/false if it is evaluated. V504. Possible overflow. Perhaps, it is a typo and 'X' variable should be used instead of 'Y'. V1042. Possible typo in the spelling of a pre-defined macro name. A terminal null is present inside a string. Excessive expression. This expression can be simplified. Bit shifting of the 32-bit value with a subsequent expansion to the 64-bit type. MISRA. Check lines: N1, N2. Call of the 'Foo' function will lead to buffer overflow. It can result in an overflow. V3501. V201. Consider throwing it by value instead. V578. Suspicious assignment inside the condition expression of 'if/while/for' operator. A memory/resource leak is possible. V3525. V3540. V817. It is possible that macro expansion resulted in incorrect evaluation order. We must also say what type of enter the function lives returning, e.g. All memory or resources allocated dynamically should be explicitly released. An abnormality within similar comparisons. Consider using 'i + 1' instead. A resource is returned from try-with-resources statement. Likewise, report_ratio returns void, so we don't save its return value, either. V3066. This can cause concurrency issues. V506. V620. V3517. Upper bound of case range is less than its lower bound. Manage Settings To determine the length of a string by 'strlen' function correctly, use a string ending with a null terminator in the first place. Array element should not be initialized more than once. Argument is a non-constant reference. V3133. Constructor parameter is not used. MISRA. A variable of the memsize type is read from a stream. V6012. This causes implementation-defined behavior. Octal constants should not be used. V015. If an expression is not given on a return statement in a function declared with a non- void return type, the compiler issues a warning message. Initial and final values of the iterator are the same. If the function has a return type other than void, it's a serious bug, and the compiler prints a warning diagnostic message. Constant value is represented by an octal form. V529. In this case, the return value of the called function is undefined. Temporary object is created and then destroyed. But, do are you sure you want your return statement inside your loop to begin with? It only takes a minute to sign up. 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 . The 'A' class containing IDisposable members does not itself implement IDisposable. Consider utilizing an explicit type cast to avoid the loss of a fractional part. Iterators are passed as arguments to 'Foo' function. The expression is always false. One of the operands in the operation equals NN. I will edit. Incorrect comparison of BOOL type variable with TRUE. Two similar code fragments were found. Consider using the 'size()' function. The macro with the 'setjmp' name and the function with the 'longjmp' name should not be used. Potential division by zero. Possible log injection. Program contains an unused label and function call: 'CC:AA()'. V3160. V587. V5623. V3143. Why are players required to record the moves in World Championship Classical games? V6076. V2544. An item with the same key has already been added. The Ctor(SerializationInfo, StreamingContext) constructor is missing. The 'a' variable was used after it was assigned through null-conditional operator. V2589. V610. Variable was compared to zero before it was used as a divisor. V797. V6002. OWASP. Undefined behavior will occur in case of signed integer overflow. V2551. OWASP. V2011. Possible incorrect use of '#pragma warning(default: X)'. The object was used before it was verified against null. Decreased performance. great work. V684. V3115. The '&=' operation always sets a value of 'Foo' variable to zero. V6092. Consider using 'i + 1' instead. Literal suffixes should not contain lowercase characters. V3047. The compiler may issue a warning diagnostic message about unreachable code if it finds any statements placed after the return statement. V507. MISRA. @Sneftel Good point. Size of array calculated by sizeof() operator was added to a pointer. V688. Cast should not convert pointer to function to any other pointer type. In such a case, the comparison operation can potentially behave unexpectedly. V6102. Size of a pointer is divided by another value. the platforms: Continuous use of the analyzer in software development, Deploying the analyzer in cloud Continuous Integration services, Additional configuration and resolving issues. The operator '||' operator is surrounded by opposite expressions 'x' and '!x'. AUTOSAR. Non-zero value can become 'FALSE'. Consider using the extended version of the 'foo' function here. Potentially tainted data is used to create OS command. It may happen that flow is never reaching that part of the code but it is important to write for the compiler. The return value of function 'Foo' is required to be utilized. OWASP. Value of 'char' type is added to a string pointer. V6019. Although GCC is able to analyze the code and determine that exactly one of the cases is executed (as shown in the supplement below), presumably this analysis occurs only later in the compilation process. V3509. For more information, see Return type. Three potential reasons for issue the warning (elevated to an error) in spite of this come to mind: Nonetheless, this is easy to work around. NullReferenceException is possible. Function receives an odd argument. Not all IDisposable members are properly disposed. Probably the '!='/'-='/'+=' should be used here. V742. The object was created but it is not being used. Field 'A' is being used before it was initialized. V6054. The alignment rules and type sizes have been changed. V637. V3039. Perhaps this is a mistake. The values used in expressions should have appropriate essential types. A value is being subtracted from the unsigned variable. V1027. V653. V806. The object was created but it is not being used. nlohmann/json.hpp:20877:5: warning: non-void function does not return a value in all control paths [-Wreturn-type]. V6093. Dangerous explicit type pointer conversion. Consider inspecting the 'for' operator. Odd use of special character in regular expression. OWASP. Function receives an odd argument. It is possible that a typo is present inside the expression. MISRA. V2575. Use of a pointer to FILE when the associated stream has already been closed. The 'if (ptr != NULL)' check can be removed. V1049. Check lines: N1, N2. Already have an account? I am writing a function to validate if the strlen of a string = 26 or not and returning a boolean value however I get an error message stating "error: non-void function does not return a value in all control paths [-Werror,-Wreturn-type]" despite there being no way for a value not to be returned. V2585. V590. MISRA. Argument is of the 'T' type. V505. What is scrcpy OTG mode and how does it work? Effect of a "bad grade" in grad school applications, Using an Ohm Meter to test for bonding of a subpanel. V108. Return value is not always used. Unsigned right shift assignment of negative 'byte' / 'short' value. V3026. Methods returning a value: It is suspicious and can possibly be an error. V1006. Probably the '+=' should be used here. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Potentially tainted data is processed by regular expression that contains an unsafe pattern. was country joe mcdonald in the military, fr matthew munoz diocese of orange,

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