Constant expression evaluation should not result in an unsigned integer wrap-around. It is not recommended to return null or throw exceptions from 'ToString()' method. The opposite operator must also be defined. It is possible that creating a new variable is unnecessary. Consider inspecting the expression. Consider inspecting the function. V1075. It's possible that the line was commented out improperly, thus altering the program's operation logics. V3009. V5622. V654. compareTo()-like methods can return not only the values -1, 0 and 1, but any values. V6093. Do not concatenate string literals with different prefixes. V3073. is there a trick to keep in mind when adding your own JSON_THROW? It is not advised to declare type 'T' as 32-bit type. V565. Suspicious return of an always empty collection. V2016. The address of an object with local scope should not be passed out of its scope. Consider inspecting the function call. Deprecated CLR switch was detected. The analyzer will not issue a warning for the following code fragment: There will also be no undefined behavior if, during the function execution, another function that does not return control, is called. V669. Unsigned right shift assignment of negative 'byte' / 'short' value. Variable should be declared in a scope that minimizes its visibility. The functions from time.h/ctime should not be used. A bool type variable is incremented. CS50 Stack Exchange is a question and answer site for students of Harvard University's CS50. Examine the substrings "abc" and "abcd". Solve Control Reaches End of Non-Void Function Error in C++ V3029. V126. Do not use real-type variables as loop counters. std::cout doesnt know how to handle this (what value would it output?). Potential logical error. V2012. Such a statement will cause the function to return to the caller when the return statement is executed (before the function would otherwise return to the caller, hence, early). V3533. V1058. V2512. V2018. If you are treating warnings as errors, you may need to temporary disable that setting in order to compile the example. Line whose first token is '#' should be a valid preprocessing directive. The functions from time.h/ctime should not be used. V1060. V816. MISRA. The 'X' counter is not used inside a nested loop. It is possible that another argument should be passed instead. Analysis of 'Makefile/Utility' type projects is not supported in this tool. Value of variable is not modified. I can give he a test with 2.0.3-RC1 and lease you perceive The return keyword is used during the end of to function to get the value back. V2601. A Function procedure has at least one possible path through its code that does not return a value. V3089. The 'X' variable was not initialized. It is inefficient to identify an empty string by using 'strlen(str) > 0' construct. Expression resulting from the macro expansion should be surrounded by parentheses. A function should not call itself either directly or indirectly. MISRA. Note that throw_blah is the weird bit, not foo. The escape sequence ends with a letter and the next character is also a letter. V3136. V680. MISRA. Suspicious type cast: 'Type1' to ' Type2'. MISRA. If you cant find an answer to your question, fill in the form below and our developers will contact you. Suspicious precise comparison. V1091. I agree. Potentially tainted data is used in the URL. AUTOSAR. There is no point to declare constant reference to a number. AUTOSAR. Why does Acts not mention the deaths of Peter and Paul? Inconsistent synchronization of a field. Does the 500-table limit still apply to the latest version of Cassandra? AUTOSAR. The 'then' statement is equivalent to the 'else' statement. V3026. The reference was used before it was verified against null. C++ code showing Line 25: Char 5: error: non-void function does not return a value in all control paths [-Werror,-Wreturn-type], How a top-ranked engineering school reimagined CS curriculum (Ep. V6049. Suspicious subexpression in a sequence of similar comparisons. V652. Pointer is cast to a more strictly aligned pointer type. OWASP. V551. Connect and share knowledge within a single location that is structured and easy to search. Memory allocation and deallocation methods are incompatible. V3116. V6092. The ratio function returns the ratio of its two int arguments as a floating-point double value. If the function has a return type other than void, it's a serious bug, and the compiler prints a warning diagnostic message. V2508. V2593. Recurring sequence of explicit type casts. It causes the function to return to the caller immediately. Functions are not required to return a value back to the caller. Consider inspecting the expression. V796. Non-null function pointer is compared to null. V2503. Decreased performance. The 'continue' operator will terminate 'do { } while (FALSE)' loop because the condition is always false. We will email you at. Suspicious bitwise operation was detected. This can quickly overflow stack. V612. V811. See NN argument of function 'Foo' in derived class and base class. V733. V1014. Is that what you want? The 'SysFreeString' function should be called only for objects of the 'BSTR' type. Recurring check. Consider checking the first actual argument of the 'Foo' function. The operation is executed 2 or more times in succession. V5005. V805. Expression of the 'A =- B' kind is used. Consider inspecting the 'for' operator. V6053. This file is marked with copyleft license, which requires you to open the derived source code. The 'swap' function may interchange a variable with itself. C++ code showing Line 25: Char 5: error: non-void function does not Likewise, report_ratio returns void, so we don't save its return value, either. Inline functions should be declared with the static storage class. V798. Use filter buttons or 'Don't Check Files' settings to enable message display. A pattern was detected: A || (A && ). Decreased performance. This may lead to undefined behavior. Odd semicolon ';' after 'if/for/while' operator. What "benchmarks" means in "what are benchmarks for?". This is unexpected behavior. V3183. V2505. V119. V736. Consider checking for typos. V3048. To learn more, see our tips on writing great answers. The class implements a copy constructor/operator=, but lacks the operator=/copy constructor. Loop break conditions do not depend on the number of iterations. Consider naming the object. WPF: several Dependency Properties are registered with a same name within the owner type. The 'throw' operator does not have any arguments and is not located within the 'catch' block. P.S. V3092. Variable is assigned but not used by the end of the function. Destructor of the object will be invoked a second time after leaving the object's scope. Calling the 'foo' virtual function in the constructor/destructor may lead to unexpected result at runtime. More info about Internet Explorer and Microsoft Edge, Compile Page, Project Designer (Visual Basic). Not all IDisposable members are properly disposed. V716. Possibly an incorrect HTML. V5615. Consider inspecting the expression. The 'strcmp' function returns 0 if corresponding strings are equal. Function execution could be deferred. 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. The 'bar2.h' header will be excluded from compilation. In a main function, the return statement and expression are optional. Check lines: N1, N2. Explicit conversion from 32-bit integer type to pointer type. V2575. This leads to the variable binding to a temporary object instead of a range element. The '+' operation is executed. V6103. Implicit type conversion of return value from memsize type to 32-bit type. The 'switch' statement should have 'default' as the last label. Function body contains the 'X' label that is not used by any 'goto' statements. Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_u64 on Intel CPUs. A switch-expression should not have Boolean type. Passing the value into the 'Foo' method will result in an exception. Decreased performance. 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. The expression contains a suspicious mix of integer and real types. V817. Structures with members of real type are compared byte-wise. Here is my code: why does it show compile error?? V3189. If the 'GetSign' function receives 0, undefined behavior will occur. V6017. Call of function 'foo' with variable number of arguments. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. MISRA. Consider assigning the seed to a value not known at compile-time. V3115. The 'switch' statement should have 'default' as the last label. He also rips off an arm to use as a sword. Only values returned from fgetpos() can be used as arguments to fsetpos(). OWASP. V1046. An odd sequence of assignments of this kind: A = B; B = A; V3038. Consider inspecting usage of 'Y' counter. V3173. OWASP. The report_square function has a void return type, so it doesn't have an expression in its return statement. V510. The 'X' variable is used for this loop and outer loops. V6076. operator works in a different way than it was expected. V3541. V1050. The conditional expressions of the 'if' statements situated alongside each other are identical. Potentially tainted data is used to create SQL command. Function '
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