Check lines: N1, N2. The initial value of the index in the nested loop equals 'i'. And if candidate_count is 0 or negative it will return without a value at all (hence the error). MISRA. V701. Which language's style guidelines should be used when writing code that is supposed to be called from another language? Why did US v. Assange skip the court of appeal? The standard signal handling functions should not be used. V3088. MISRA. Deprecated CLR switch was detected. That's why, the analyzer will not issue a warning. V1075. Consider inspecting the expression. Unsafe synchronization on an object. MISRA. V538. Quoting from gcc warning options page: -Wno-unused-result. More than N bits are required to store the value, but the expression evaluates to the T type which can only hold K bits. V2536. Suspicious access to element by a constant index inside a loop. V2007. is there a trick to keep in mind when adding your own JSON_THROW? V584. The expression is always false. It is more efficient to catch exception by reference rather than by value. Executing this query may lead to an error. V3164. Conversions between pointers to objects and integer types should not be performed. The expression is excessive or contains a logical error. OWASP. MISRA. Identical sub-expressions to the left and to the right of 'foo' operator. V6078. Calling the 'foo' virtual function in the constructor/destructor may lead to unexpected result at runtime. Constructor parameter is not used. Conditional expression of 'if' statement is incorrect for the HRESULT type value 'Foo'. V749. V2546. V581. Number of iterations in loop equals size of a pointer. Suspicious comparison found: 'a == b == c'. This return value is also printed. The 'continue' operator will terminate 'do { } while (false)' loop because the condition is always false. V2517. This leads to undefined behavior. V5012. A return statement ends the execution of a function, and returns control to the calling function. V3135. V728. Consider inspecting conditional expression of the loop. It is likely that a wrong variable is being incremented inside the 'for' operator. V790. Class destructor should not exit with an exception. Inline functions should be declared with the static storage class. V1049. A switch-expression should not have Boolean type. It is better to redefine the N function argument as a reference. V3181. Single-line comments should not end with a continuation token. A non-serializable class should not be serialized. Consider inspecting usage of 'Y' counter. V2538. V563. Consider re-generating your suppress file to continue updating it. Consider reviewing the correctness of 'X' item's usage. V555. AUTOSAR. Suspicious sequence of types castings: pointer -> memsize -> 32-bit integer. V726. nlohmann/json.hpp:20017:5: warning: non-void function does not return a value in all control paths [-Wreturn-type], reference operator[](T* key) AUTOSAR. 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. V3109. Incorrect comparison of BOOL type variable with TRUE. Consider verifying the compatibility of 32 and 64 bit versions of the application in the context of a stored data. V3075. V3183. The expression contains a suspicious mix of integer and real types. In this lesson, well explore functions with a return type of void. V3539. V3069. MISRA. Unsigned right shift assignment of negative 'byte' / 'short' value. :' operation: implicit type conversion to memsize type. This causes implementation-defined behavior. There are identical sub-expressions to the left and to the right of the 'foo' operator. A pointer/reference parameter in a function should be declared as pointer/reference to const if the corresponding object was not modified. WPF: the names of the property registered for DependencyProperty, and of the property used to access it, do not correspond with each other. V5620. V654. 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 . V3153. Consider replacing standard container with a different one. Potentially unsafe double-checked locking. Consider inspecting the expression. Why does flowing off the end of a non-void function without returning a value not produce a compiler error? MISRA. V3082. Conversions should not be performed between pointer to function and any other type. Assigning the value C to the X variable looks suspicious. Value of 'char' type is added to a string pointer. Suspicious sequence of types castings: memsize -> 32-bit integer -> memsize. 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. Consider using the 'Ptr' version of the 'foo' function here. AUTOSAR. MISRA. The predefined identifier '__func__' always contains the string 'operator()' inside function body of the overloaded 'operator()'. V3158. The class implements a copy constructor/operator=, but lacks the operator=/copy constructor. V1005. When you include the return (0) statement, you are saying that the function returns a value of 0. Use the RtlSecureZeroMemory() function to erase private data. V3073. V1040. nlohmann/json.hpp:20877:5: warning: non-void function does not return a value in all control paths [-Wreturn-type]. MISRA. V3547. It is suspicious that variable is initialized through itself. Initial and final values of the iterator are the same. Function returns a pointer to the internal string buffer of a local object, which will be destroyed. V6084. V1091. V2008. This presents the compiler with a contradicting declaration and return. V2575. Suspicious pointer arithmetic. Unsafe invocation of event, NullReferenceException is possible. We and our partners use cookies to Store and/or access information on a device. 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. V6015. An odd precise comparison. Floating-point values should not be tested for equality or inequality. 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. The variable was utilized in the logical expression before it was verified against null in the same logical expression. Consider replacing the call to the 'at()' method with the 'operator[]'. AUTOSAR. V660. Suspicious pointer arithmetic with 'malloc/new'. Array is used as pointer to single object. V1056. The ', " or \ characters and the /* or // character sequences should not occur in a header file name. V608. Potential logical error. It's odd that this method always returns one and the same value of NN. V527. V5305. Modified value of the operand is not used after the increment/decrement operation. V2527. V6059. MISRA. Infinite loop is possible. V590. V3528. How to Make a Black glass pass light through it? A return statement (with no return value) can be used in a void function -- such a statement will cause the function to return to the caller at the point where the return statement is executed. When main calls printHi, the code in printHi executes, and Hi is printed. V816. WPF: the type registered for DependencyProperty does not correspond with the type of the property used to access it. V6093. V814. OWASP. V6054. Function call may lead to buffer overflow. V699. The comma operator should not be used. MISRA. The expression is excessive or contains a logical error. Possible LDAP injection. V564. During the initial analysis, the code nominally contains three code paths. @Sneftel Good point. V670. The first statement in print() prints A. Consider inspecting the expression. Decreased performance. Some of the references in project are missing or incorrect. It is possible that the variable should be used instead of the string literal. V5619. MIP Model with relaxed integer constraints takes longer to solve than normal model, why? The object was used before it was verified against null. Possible null dereference. V1036. OWASP. V678. How do I stop the Flickering on Mode 13h? MISRA. return reverseString return Consider reviewing 'X'. The variable is incremented in the loop. No return statement is required. It only takes a minute to sign up. V655. The expression of 'foo(foo(x))' pattern is excessive or contains an error. The 'x' variable is assigned values twice successively. operators are used for accessing members of the same object. The 'a % b' expression always evaluates to 0. V1065. The text was updated successfully, but these errors were encountered: Also, can you provide a minimal code sample that reproduces this issue? V559. The 'strcmp' function returns 0 if corresponding strings are equal. Three potential reasons for issue the warning (elevated to an error) in spite of this come to mind: Due to the way the compiler is constructed, warnings are generally reported early, and suppressing this warning based on later analysis would be difficult. Lifetime of the lambda is greater than lifetime of the local variable captured by reference. Implicit type conversion from memsize to double type or vice versa. V105. V1031. In this case, the return value of the called function is undefined. Constant expression evaluation should not result in an unsigned integer wrap-around. Particularly, if during the function execution an exception is thrown and is not caught in the body of the same function, there will be no undefined behavior. Unions should not be used. Pointer was used before its check for nullptr. V546. An example of data being processed may be a unique identifier stored in a cookie. V3074. Size of every element in X array is not equal to divisor. V551. V6034. V2609. V3077. No objects are passed to the 'std::scoped_lock' constructor. V6086. Presence of #line directives may cause some diagnostic messages to have incorrect file name and line number. Implicit type conversion to memsize type in an arithmetic expression. V3161. It is possible that this 'else' branch must apply to the previous 'if' statement. Classes should always be derived from std::exception (and alike) as 'public'. V1009. V3151. V764. Make this option control the pedwarns that don't have any option. V806. Syntax: return[expression]; There are various ways to use return statements. nlohmann/json.hpp:11996:5: warning: non-void function does not return a value in all control paths [-Wreturn-type], static ReferenceType get_ref_impl(ThisType& obj) Examine the substrings "abc" and "abcd". It is possible that 'else' block was forgotten or commented out, thus altering the program's operation logics. V2617. V3145. MISRA. OWASP. The code's operational logic does not correspond with its formatting. V5008. Consider using the declaration from system header files instead. V710. V5602. All memory or resources allocated dynamically should be explicitly released. V3099. V2520. An early return is a return statement that occurs before the last line of a function. V2563. Pointer is cast to a more strictly aligned pointer type. Allocation of memory by the pattern "(X*)malloc(sizeof(Y))" where the sizes of X and Y types are not equal. What risks are you taking when "signing in with Google"? An object is used as an argument to its own method. Potentially tainted data might be used to execute a malicious script. You may or may not use the return . Constant expression evaluation should not result in an unsigned integer wrap-around. The first 'if' statement contains method return. The compiler makes no such assumptions, so you need to make sure that there is a return path that will be followed if the return statement inside your loop is never reached. V6091. 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? MISRA. For more information, see Return type. Possible exception: type marked by [Serializable] contains non-serializable members not marked by [NonSerialized]. MISRA. One of the operands in the operation equals NN. Variable 'foo' was assigned the same value. Correction-related comments will be deleted after processing to help reduce clutter. Declaration should contain no more than two levels of pointer nesting. The second function call to function printHi() wont even compile. Possible exception when deserializing type. Such a pointer will become invalid. V3142. V3028. The 'A' field should probably be returned/assigned instead. - Nate Eldredge. AUTOSAR. MISRA. V3079. As soon as your program hits that, it will stop executing the loop and return to the main function, performing only a single iteration of the loop. Flowing off the end of a non-void function with no 'return' results in undefined behavior. So, the compiler generates an error. The 'Foo' pointer is always not equal to NULL. Use volatile variable(s) or synchronization primitives to avoid this. V1057. Suspicious use of BigDecimal class. Identifiers that start with '__' or '_[A-Z]' are reserved. The 'bar2.h' header will be excluded from compilation. Decreased performance. V6096. V533. V2586. It is possible that an error is present. The 'x' variable is assigned to itself. It is possible that a typo is present inside the string literal. Excessive expression. Unchecked tainted data is used in expression. V724. V1042. How to enter the PVS-Studio license and what's the next move, Release history for previous versions (before 7.00), Getting acquainted with the PVS-Studio static code analyzer on Windows, Build-system independent analysis (C and C++), Direct integration of the analyzer into build automation systems (C and C++), PVS-Studio C# installation on Linux and macOS, How to run PVS-Studio C# on Linux and macOS, Installing and updating PVS-Studio C++ on Linux, Installing and updating PVS-Studio C++ on macOS, How to run PVS-Studio C++ on Linux and macOS, Get started with PVS-Studio in Visual Studio, Using PVS-Studio with JetBrains Rider and CLion, Analyzing Visual Studio / MSBuild / .NET projects from the command line using PVS-Studio, Cross-platform analysis of C and C++ projects in PVS-Studio, How to use the OWASP diagnostic group in PVS-Studio, Analysis of C++ projects based on JSON Compilation Database, How to integrate PVS-Studio into CMake with a CMake module, How to analyze Unity projects with PVS-Studio, Integration of PVS-Studio analysis results into SonarQube, Speeding up the analysis of C and C++ code through distributed build systems (Incredibuild), How to display the analyzer's most interesting warnings, Baselining analysis results (suppressing warnings for existing code), Handling the diagnostic messages list in Visual Studio, How to view and convert analyzer's results, Viewing analysis results with C and C++ Compiler Monitoring UI, Notifying the developer teams (blame-notifier utility), Viewing reports in a SARIF format in Visual Studio Code, Filtering and handling the analyzer output through diagnostic configuration files (.pvsconfig), Excluding files and directories from analysis, Using the PVS-Studio extension for Visual Studio Code, How to use the PVS-Studio extension for Qt Creator, Analysis configuration file (Settings.xml).
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warning non void function does not return a value 2023