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Mixed Recommended Rules rule set

The Microsoft Mixed Recommended Rules focus on the most common and critical problems in your C++ projects that support the Common Language Runtime, including potential security holes, application crashes, and other important logic and design errors. This rule set includes all of the rules in the Mixed Minimum Rules rule set.

Include this rule set in any custom rule set you create for your C++ projects that support the Common Language Runtime.

Rule Description
C6001 Using Uninitialized Memory
C6011 Dereferencing Null Pointer
C6029 Use Of Unchecked Value
C6031 Return Value Ignored
C6053 Zero Termination From Call
C6054 Zero Termination Missing
C6059 Bad Concatenation
C6063 Missing String Argument To Format Function
C6064 Missing Integer Argument To Format Function
C6066 Missing Pointer Argument To Format Function
C6067 Missing String Pointer Argument To Format Function
C6101 Returning uninitialized memory
C6200 Index Exceeds Buffer Maximum
C6201 Index Exceeds Stack Buffer Maximum
C6214 Invalid Cast HRESULT To BOOL
C6215 Invalid Cast BOOL To HRESULT
C6216 Invalid Compiler-Inserted Cast BOOL To HRESULT
C6217 Invalid HRESULT Test With NOT
C6220 Invalid HRESULT Compare To -1
C6226 Invalid HRESULT Assignment To -1
C6230 Invalid HRESULT Use As Boolean
C6235 Non-Zero Constant With Logical-Or
C6236 Logical-Or With Non-Zero Constant
C6237 Zero With Logical-And Loses Side Effects
C6242 Local Unwind Forced
C6248 Creating Null DACL
C6250 Unreleased Address Descriptors
C6255 Unprotected Use Of Alloca
C6258 Using Terminate Thread
C6259 Dead Code In Bitwise-Or Limited Switch
C6260 Use Of Byte Arithmetic
C6262 Excessive Stack Usage
C6263 Using Alloca In Loop
C6268 Missing Parentheses In Cast
C6269 Pointer Dereference Ignored
C6270 Missing Float Argument To Format Function
C6271 Extra Argument To Format Function
C6272 Non-Float Argument To Format Function
C6273 Non-Integer Argument To Format Function
C6274 Non-Character Argument To Format Function
C6276 Invalid String Cast
C6277 Invalid CreateProcess Call
C6278 Array-New Scalar-Delete Mismatch
C6279 Scalar-New Array-Delete Mismatch
C6280 Memory Allocation-Deallocation Mismatch
C6281 Bitwise Relation Precedence
C6282 Assignment Replaces Test
C6283 Primitive Array-New Scalar-Delete Mismatch
C6284 Invalid Object Argument To Format Function
C6285 Logical-Or Of Constants
C6286 Non-Zero Logical-Or Losing Side Effects
C6287 Redundant Test
C6288 Mutual Inclusion Over Logical-And Is False
C6289 Mutual Exclusion Over Logical-Or Is True
C6290 Logical-Not Bitwise-And Precedence
C6291 Logical-Not Bitwise-Or Precedence
C6292 Loop Counts Up From Maximum
C6293 Loop Counts Down From Minimum
C6294 Loop Body Never Executed
C6295 Infinite Loop
C6296 Loop Only Executed Once
C6297 Result Of Shift Cast To Larger Size
C6299 Bitfield To Boolean Comparison
C6302 Invalid Character String Argument To Format Function
C6303 Invalid Wide Character String Argument To Format Function
C6305 Mismatched Size And Count Use
C6306 Incorrect Variable Argument Function Call
C6308 Realloc Leak
C6310 Illegal Exception Filter Constant
C6312 Exception Continue Execution Loop
C6314 Bitwise-Or Precedence
C6317 Not Not Complement
C6318 Exception Continue Search
C6319 Ignored By Comma
C6324 String Copy Instead Of String Compare
C6328 Potential Argument Type Mismatch
C6331 VirtualFree Invalid Flags
C6332 VirtualFree Invalid Parameter
C6333 VirtualFree Invalid Size
C6335 Leaking Process Handle
C6381 Shutdown Information Missing
C6383 Element-Count Byte-Count Buffer Overrun
C6384 Pointer Size Division
C6385 Read Overrun
C6386 Write Overrun
C6387 Invalid Parameter Value
C6388 Invalid Parameter Value
C6500 Invalid Attribute Property
C6501 Conflicting Attribute Property Values
C6503 References Cannot Be Null
C6504 Null On Non-Pointer
C6505 MustCheck On Void
C6506 Buffer Size On Non-Pointer Or Array
C6508 Write Access On Constant
C6509 Return Used On Precondition
C6510 Null Terminated On Non-Pointer
C6511 MustCheck Must Be Yes Or No
C6513 Element Size Without Buffer Size
C6514 Buffer Size Exceeds Array Size
C6515 Buffer Size On Non-Pointer
C6516 No Properties On Attribute
C6517 Valid Size On Non-Readable Buffer
C6518 Writable Size On Non-Writable Buffer
C6522 Invalid Size String Type
C6525 Invalid Size String Unreachable Location
C6527 Invalid annotation: 'NeedsRelease' property may not be used on values of void type
C6530 Unrecognized Format String Style
C6540 The use of attribute annotations on this function will invalidate all of its existing __declspec annotations
C6551 Invalid size specification: expression not parsable
C6552 Invalid Deref= or Notref=: expression not parsable
C6701 The value is not a valid Yes/No/Maybe value
C6702 The value is not a string value
C6703 The value is not a number
C6704 Unexpected Annotation Expression Error
C6705 Expected number of arguments for annotation does not match actual number of arguments for annotation
C6706 Unexpected Annotation Error for annotation
C6995 Failed to save XML Log file
C26100 Race condition
C26101 Failing to use interlocked operation properly
C26110 Caller failing to hold lock
C26111 Caller failing to release lock
C26112 Caller cannot hold any lock
C26115 Failing to release lock
C26116 Failing to acquire or to hold lock
C26117 Releasing unheld lock
C26140 Concurrency SAL annotation error
C28020 The expression is not true at this call
C28021 The parameter being annotated must be a pointer
C28022 The function class(es) on this function do not match the function class(es) on the typedef used to define it.
C28023 The function being assigned or passed should have a _Function_class_ annotation for at least one of the class(es)
C28024 The function pointer being assigned to is annotated with the function class, which is not contained in the function class(es) list.
C28039 The type of actual parameter should exactly match the type
C28112 A variable which is accessed via an Interlocked function must always be accessed via an Interlocked function.
C28113 Accessing a local variable via an Interlocked function
C28125 The function must be called from within a try/except block
C28137 The variable argument should instead be a (literal) constant
C28138 The constant argument should instead be variable
C28159 Consider using another function instead.
C28160 Error annotation
C28163 The function should never be called from within a try/except block
C28164 The argument is being passed to a function that expects a pointer to an object (not a pointer to a pointer)
C28182 Dereferencing NULL pointer. The pointer contains the same NULL value as another pointer did.
C28183 The argument could be one value, and is a copy of the value found in the pointer
C28193 The variable holds a value that must be examined
C28196 The requirement is not satisfied. (The expression does not evaluate to true.)
C28202 Illegal reference to non-static member
C28203 Ambiguous reference to class member.
C28205 _Success_ or _On_failure_ used in an illegal context
C28206 Left operand points to a struct, use '->'
C28207 Left operand is a struct, use '.'
C28209 The declaration for symbol has a conflicting declaration
C28210 Annotations for the __on_failure context must not be in explicit pre context
C28211 Static context name expected for SAL_context
C28212 Pointer expression expected for annotation
C28213 The _Use_decl_annotations_ annotation must be used to reference, without modification, a prior declaration.
C28214 Attribute parameter names must be p1...p9
C28215 The typefix cannot be applied to a parameter that already has a typefix
C28216 The checkReturn annotation only applies to postconditions for the specific function parameter.
C28217 For function, the number of parameters to annotation does not match that found at file
C28218 For function parameter, the annotation's parameter does not match that found at file
C28219 Member of enumeration expected for annotation the parameter in the annotation
C28220 Integer expression expected for annotation the parameter in the annotation
C28221 String expression expected for the parameter in the annotation
C28222 __yes, __no, or __maybe expected for annotation
C28223 Did not find expected Token/identifier for annotation, parameter
C28224 Annotation requires parameters
C28225 Did not find the correct number of required parameters in annotation
C28226 Annotation cannot also be a PrimOp (in current declaration)
C28227 Annotation cannot also be a PrimOp (see prior declaration)
C28228 Annotation parameter: cannot use type in annotations
C28229 Annotation does not support parameters
C28230 The type of parameter has no member.
C28231 Annotation is only valid on array
C28232 pre, post, or deref not applied to any annotation
C28233 pre, post, or deref applied to a block
C28234 __at expression does not apply to current function
C28235 The function cannot stand alone as an annotation
C28236 The annotation cannot be used in an expression
C28237 The annotation on parameter is no longer supported
C28238 The annotation on parameter has more than one of value, stringValue, and longValue. Use paramn=xxx
C28239 The annotation on parameter has both value, stringValue, or longValue; and paramn=xxx. Use only paramn=xxx
C28240 The annotation on parameter has param2 but no param1
C28241 The annotation for function on parameter is not recognized
C28243 The annotation for function on parameter requires more dereferences than the actual type annotated allows
C28244 The annotation for function has an unparsable parameter/external annotation
C28245 The annotation for function annotates 'this' on a non-member-function
C28246 The parameter annotation for function does not match the type of the parameter
C28250 Inconsistent annotation for function: the prior instance has an error.
C28251 Inconsistent annotation for function: this instance has an error.
C28252 Inconsistent annotation for function: parameter has another annotations on this instance.
C28253 Inconsistent annotation for function: parameter has another annotations on this instance.
C28254 dynamic_cast<>() is not supported in annotations
C28262 A syntax error in the annotation was found in function, for annotation
C28263 A syntax error in a conditional annotation was found for Intrinsic annotation
C28267 A syntax error in the annotations was found annotation in the function.
C28272 The annotation for function, parameter when examining is inconsistent with the function declaration
C28273 For function, the clues are inconsistent with the function declaration
C28275 The parameter to _Macro_value_ is null
C28279 For symbol, a 'begin' was found without a matching 'end'
C28280 For symbol, an 'end' was found without a matching 'begin'
C28282 Format Strings must be in preconditions
C28285 For function, syntax error in parameter
C28286 For function, syntax error near the end
C28287 For function, syntax Error in _At_() annotation (unrecognized parameter name)
C28288 For function, syntax Error in _At_() annotation (invalid parameter name)
C28289 For function: ReadableTo or WritableTo did not have a limit-spec as a parameter
C28290 the annotation for function contains more Externals than the actual number of parameters
C28291 post null/notnull at deref level 0 is meaningless for function.
C28300 Expression operands of incompatible types for operator
C28301 No annotations for first declaration of function.
C28302 An extra _Deref_ operator was found on annotation.
C28303 An ambiguous _Deref_ operator was found on annotation.
C28304 An improperly placed _Notref_ operator was found applied to token.
C28305 An error while parsing a token was discovered.
C28306 The annotation on parameter is obsolescent
C28307 The annotation on parameter is obsolescent
C28350 The annotation describes a situation that is not conditionally applicable.
C28351 The annotation describes where a dynamic value (a variable) cannot be used in the condition.
CA1001 Types that own disposable fields should be disposable
CA1009 Declare event handlers correctly
CA1016 Mark assemblies with AssemblyVersionAttribute
CA1033 Interface methods should be callable by child types
CA1049 Types that own native resources should be disposable
CA1060 Move P/Invokes to NativeMethods class
CA1061 Do not hide base class methods
CA1063 Implement IDisposable correctly
CA1065 Do not raise exceptions in unexpected locations
CA1301 Avoid duplicate accelerators
CA1400 P/Invoke entry points should exist
CA1401 P/Invokes should not be visible
CA1403 Auto layout types should not be COM visible
CA1404 Call GetLastError immediately after P/Invoke
CA1405 COM visible type base types should be COM visible
CA1410 COM registration methods should be matched
CA1415 Declare P/Invokes correctly
CA1821 Remove empty finalizers
CA1900 Value type fields should be portable
CA1901 P/Invoke declarations should be portable
CA2002 Do not lock on objects with weak identity
CA2100 Review SQL queries for security vulnerabilities
CA2101 Specify marshaling for P/Invoke string arguments
CA2108 Review declarative security on value types
CA2111 Pointers should not be visible
CA2112 Secured types should not expose fields
CA2114 Method security should be a superset of type
CA2116 APTCA methods should only call APTCA methods
CA2117 APTCA types should only extend APTCA base types
CA2122 Do not indirectly expose methods with link demands
CA2123 Override link demands should be identical to base
CA2124 Wrap vulnerable finally clauses in outer try
CA2126 Type link demands require inheritance demands
CA2131 Security critical types may not participate in type equivalence
CA2132 Default constructors must be at least as critical as base type default constructors
CA2133 Delegates must bind to methods with consistent transparency
CA2134 Methods must keep consistent transparency when overriding base methods
CA2137 Transparent methods must contain only verifiable IL
CA2138 Transparent methods must not call methods with the SuppressUnmanagedCodeSecurity attribute
CA2140 Transparent code must not reference security critical items
CA2141 Transparent methods must not satisfy LinkDemands
CA2146 Types must be at least as critical as their base types and interfaces
CA2147 Transparent methods may not use security asserts
CA2149 Transparent methods must not call into native code
CA2200 Rethrow to preserve stack details
CA2202 Do not dispose objects multiple times
CA2207 Initialize value type static fields inline
CA2212 Do not mark serviced components with WebMethod
CA2213 Disposable fields should be disposed
CA2214 Do not call overridable methods in constructors
CA2216 Disposable types should declare finalizer
CA2220 Finalizers should call base class finalizer
CA2229 Implement serialization constructors
CA2231 Overload operator equals on overriding ValueType.Equals
CA2232 Mark Windows Forms entry points with STAThread
CA2235 Mark all non-serializable fields
CA2236 Call base class methods on ISerializable types
CA2237 Mark ISerializable types with SerializableAttribute
CA2238 Implement serialization methods correctly
CA2240 Implement ISerializable correctly
CA2241 Provide correct arguments to formatting methods
CA2242 Test for NaN correctly