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Guideline

CERT_C-API00-a API00-C. Functions should validate their parameters
CERT_C-API01-a API01-C. Avoid laying out strings in memory directly before sensitive data
CERT_C-API01-b API01-C. Avoid laying out strings in memory directly before sensitive data
CERT_C-API02-a API02-C. Functions that read or write to or from an array should take an argument to specify the source or target size
CERT_C-API02-b API02-C. Functions that read or write to or from an array should take an argument to specify the source or target size
CERT_C-ARR01-a ARR01-C. Do not apply the sizeof operator to a pointer when taking the size of an array
CERT_C-ARR02-a ARR02-C. Explicitly specify array bounds, even if implicitly defined by an initializer
CERT_C-ARR30-a ARR30-C. Do not form or use out-of-bounds pointers or array subscripts
CERT_C-ARR32-a ARR32-C. Ensure size arguments for variable length arrays are in a valid range
CERT_C-ARR36-a ARR36-C. Do not subtract or compare two pointers that do not refer to the same array
CERT_C-ARR37-a ARR37-C. Do not add or subtract an integer to a pointer to a non-array object
CERT_C-ARR38-a ARR38-C. Guarantee that library functions do not form invalid pointers
CERT_C-ARR38-b ARR38-C. Guarantee that library functions do not form invalid pointers
CERT_C-ARR38-c ARR38-C. Guarantee that library functions do not form invalid pointers
CERT_C-ARR38-d ARR38-C. Guarantee that library functions do not form invalid pointers
CERT_C-ARR39-a ARR39-C. Do not add or subtract a scaled integer to a pointer
CERT_C-ARR39-b ARR39-C. Do not add or subtract a scaled integer to a pointer
CERT_C-ARR39-c ARR39-C. Do not add or subtract a scaled integer to a pointer
CERT_C-CON01-a CON01-C. Acquire and release synchronization primitives in the same module, at the same level of abstraction
CERT_C-CON02-a CON02-C. Do not use volatile as a synchronization primitive
CERT_C-CON05-a CON05-C. Do not perform operations that can block while holding a lock
CERT_C-CON30-a CON30-C. Clean up thread-specific storage
CERT_C-CON31-a CON31-C. Do not destroy a mutex while it is locked
CERT_C-CON31-b CON31-C. Do not destroy a mutex while it is locked
CERT_C-CON31-c CON31-C. Do not destroy a mutex while it is locked
CERT_C-CON32-a CON32-C. Prevent data races when accessing bit-fields from multiple threads
CERT_C-CON33-a CON33-C. Avoid race conditions when using library functions
CERT_C-CON34-a CON34-C. Declare objects shared between threads with appropriate storage durations
CERT_C-CON35-a CON35-C. Avoid deadlock by locking in a predefined order
CERT_C-CON36-a CON36-C. Wrap functions that can spuriously wake up in a loop
CERT_C-CON37-a CON37-C. Do not call signal() in a multithreaded program
CERT_C-CON38-a CON38-C. Preserve thread safety and liveness when using condition variables
CERT_C-CON39-a CON39-C. Do not join or detach a thread that was previously joined or detached
CERT_C-CON40-a CON40-C. Do not refer to an atomic variable twice in an expression
CERT_C-CON41-a CON41-C. Wrap functions that can fail spuriously in a loop
CERT_C-CON43-a CON43-C. Do not allow data races in multithreaded code
CERT_C-DCL00-a DCL00-C. Const-qualify immutable objects
CERT_C-DCL01-a DCL01-C. Do not reuse variable names in subscopes
CERT_C-DCL01-b DCL01-C. Do not reuse variable names in subscopes
CERT_C-DCL02-a DCL02-C. Use visually distinct identifiers
CERT_C-DCL04-a DCL04-C. Do not declare more than one variable per declaration
CERT_C-DCL05-a DCL05-C. Use typedefs of non-pointer types only
CERT_C-DCL06-a DCL06-C. Use meaningful symbolic constants to represent literal values
CERT_C-DCL12DCL10-a DCL12 DCL10-C. Implement abstract data types using opaque types Maintain the contract between the writer and caller of variadic functions
CERT_C-DCL13DCL11-a DCL13 DCL11-C. Declare function parameters that are pointers to values not changed by the function as const Understand the type issues associated with variadic functions
CERT_C-DCL15DCL11-a b DCL15 DCL11-C. Declare file-scope objects or functions that do not need external linkage as static Understand the type issues associated with variadic functions
CERT_C-DCL16DCL11-a c DCL16 DCL11-C. Use "L," not "l," to indicate a long value Understand the type issues associated with variadic functions
CERT_C-DCL18DCL11-a d DCL18 DCL11-C. Do not begin integer constants with 0 when specifying a decimal value Understand the type issues associated with variadic functions
CERT_C-DCL18DCL11-b e DCL18 DCL11-C. Do not begin integer constants with 0 when specifying a decimal value Understand the type issues associated with variadic functions
CERT_C-DCL19DCL11-a f DCL19 DCL11-C. Minimize the scope of variables and Understand the type issues associated with variadic functions
CERT_C-DCL20DCL12-a DCL20 DCL12-C. Explicitly specify void when a function accepts no arguments Implement abstract data types using opaque types
CERT_C-DCL22DCL13-a DCL22 DCL13-C. Use volatile for data that cannot be cached Declare function parameters that are pointers to values not changed by the function as const
CERT_C-DCL30DCL15-a DCL30 DCL15-C. Declare objects with appropriate storage durations file-scope objects or functions that do not need external linkage as static
CERT_C-DCL30DCL16-b a DCL30 DCL16-C. Declare objects with appropriate storage durations Use "L," not "l," to indicate a long value
CERT_C-DCL31DCL18-a DCL31 DCL18-C. Declare identifiers before using them Do not begin integer constants with 0 when specifying a decimal value
CERT_C-DCL36DCL18-a b DCL36 DCL18-C. Do not declare an identifier with conflicting linkage classifications begin integer constants with 0 when specifying a decimal value
CERT_C-DCL37DCL19-a DCL37 DCL19-C. Do not declare or define a reserved identifier Minimize the scope of variables and functions
CERT_C-DCL38DCL20-a DCL38 DCL20-C. Use the correct syntax when declaring a flexible array member Explicitly specify void when a function accepts no arguments
CERT_C-DCL39DCL22-a DCL39 DCL22-C. Avoid information leakage when passing a structure across a trust boundary Use volatile for data that cannot be cached
CERT_C-DCL40DCL30-a DCL40 DCL30-C. Do not create incompatible declarations of the same function or object Declare objects with appropriate storage durations
CERT_C-DCL40DCL30-b DCL40 DCL30-C. Do not create incompatible declarations of the same function or object Declare objects with appropriate storage durations
CERT_C-DCL41DCL31-a DCL41 DCL31-C. Do not declare variables inside a switch statement before the first case label Declare identifiers before using them
CERT_C-ENV01DCL36-a ENV01 DCL36-C. Do not make assumptions about the size of an environment variable declare an identifier with conflicting linkage classifications
CERT_C-ENV01DCL37-b a ENV01 DCL37-C. Do not make assumptions about the size of an environment variable declare or define a reserved identifier
CERT_C-ENV01DCL38-c a ENV01 DCL38-C. Do not make assumptions about the size of an environment variable Use the correct syntax when declaring a flexible array member
CERT_C-ENV02DCL39-a ENV02 DCL39-C. Beware of multiple environment variables with the same effective name Avoid information leakage when passing a structure across a trust boundary
CERT_C-ENV30DCL40-a ENV30 DCL40-C. Do not modify the object referenced by the return value of certain functions create incompatible declarations of the same function or object
CERT_C-ENV31DCL40-a b ENV31 DCL40-C. Do not rely on an environment pointer following an operation that may invalidate it create incompatible declarations of the same function or object
CERT_C-ENV32DCL41-a ENV32 DCL41-C. All exit handlers must return normally Do not declare variables inside a switch statement before the first case label
CERT_C-ENV33ENV01-a ENV33 ENV01-C. Do not call system() make assumptions about the size of an environment variable
CERT_C-ENV33ENV01-b ENV33 ENV01-C. Do not call system() make assumptions about the size of an environment variable
CERT_C-ENV34ENV01-a c ENV34 ENV01-C. Do not store pointers returned by certain functions make assumptions about the size of an environment variable
CERT_C-ERR04ENV02-a ERR04 ENV02-C. Choose an appropriate termination strategy Beware of multiple environment variables with the same effective name
CERT_C-ERR05ENV30-a ERR05 ENV30-C. Application-independent code should provide error detection without dictating error handling Do not modify the object referenced by the return value of certain functions
CERT_C-ERR07ENV31-a ERR07 ENV31-C. Prefer functions that support error checking over equivalent functions that don't Do not rely on an environment pointer following an operation that may invalidate it
CERT_C-ERR30ENV32-a ERR30 ENV32-C. Set errno to zero before calling a library function known to set errno, and check errno only after the function returns a value indicating failure All exit handlers must return normally
CERT_C-ERR30ENV33-b a ERR30 ENV33-C. Set errno to zero before calling a library function known to set errno, and check errno only after the function returns a value indicating failure Do not call system()
CERT_C-ERR32ENV33-a b ERR32 ENV33-C. Do not rely on indeterminate values of errno call system()
CERT_C-ERR33ENV34-a ERR33 ENV34-C. Detect and handle standard library errors Do not store pointers returned by certain functions
CERT_C-ERR33ERR01-b a ERR33 ERR01-C. Detect and handle standard library Use ferror() rather than errno to check for FILE stream errors
CERT_C-ERR33ERR02-c a ERR33 ERR02-C. Detect and handle standard library errors Avoid in-band error indicators
CERT_C-ERR33ERR04-d a ERR33 ERR04-C. Detect and handle standard library errors Choose an appropriate termination strategy
CERT_C-ERR34ERR05-a ERR34 ERR05-C. Detect errors when converting a string to a number
CERT_C-EXP00-a EXP00-C. Use parentheses for precedence of operation
Application-independent code should provide error detection without dictating error handling
CERT_C-EXP02ERR06-a EXP02 ERR06-C. Be aware of the short-circuit behavior of the logical AND and OR operators Understand the termination behavior of assert() and abort()
CERT_C-EXP05ERR07-a EXP05 ERR07-C. Do not cast away a const qualification Prefer functions that support error checking over equivalent functions that don't
CERT_C-EXP08ERR07-a b EXP08 ERR07-C. Ensure pointer arithmetic is used correctly Prefer functions that support error checking over equivalent functions that don't
CERT_C-EXP08ERR30-b a EXP08 ERR30-C. Ensure pointer arithmetic is used correctly CERT_C-EXP10-a EXP10-C. Do not depend on the order of evaluation of subexpressions or the order in which side effects take place Set errno to zero before calling a library function known to set errno, and check errno only after the function returns a value indicating failure
CERT_C-EXP10ERR30-b EXP10 ERR30-C. Do not depend on the order of evaluation of subexpressions or the order in which side effects take place Set errno to zero before calling a library function known to set errno, and check errno only after the function returns a value indicating failure
CERT_C-EXP10ERR32-c a EXP10 ERR32-C. Do not depend rely on the order of evaluation of subexpressions or the order in which side effects take place indeterminate values of errno
CERT_C-EXP10ERR33-d a ERR33-C. Detect and handle standard library errors
CERT_C-ERR33-b ERR33-C. Detect and handle standard library errors EXP10-C. Do not depend on the order of evaluation of subexpressions or the order in which side effects take place
CERT_C-EXP12ERR33-a c EXP12 ERR33-C. Do not ignore values returned by functions Detect and handle standard library errors
CERT_C-EXP12ERR33-b d EXP12 ERR33-C. Do not ignore values returned by functions Detect and handle standard library errors
CERT_C-EXP14ERR34-a EXP14 ERR34-C. Beware of integer promotion when performing bitwise operations on integer types smaller than int Detect errors when converting a string to a number
CERT_C-EXP16EXP00-a EXP16 EXP00-C. Do not compare function pointers to constant values Use parentheses for precedence of operation
CERT_C-EXP19EXP02-a EXP19 EXP02-C. Use braces for the body of an if, for, or while statement Be aware of the short-circuit behavior of the logical AND and OR operators
CERT_C-EXP20EXP05-a EXP20 EXP05-C. Perform explicit tests to determine success, true and false, and equality Do not cast away a const qualification
CERT_C-EXP30EXP08-a EXP30 EXP08-C. Do not depend on the order of evaluation for side effects Ensure pointer arithmetic is used correctly
CERT_C-EXP30EXP08-b EXP30 EXP08-C. Ensure pointer arithmetic is used correctly
CERT_C-EXP10-a EXP10-C. Do not Do not depend on the order of evaluation for of subexpressions or the order in which side effects take place
CERT_C-EXP30EXP10-c b EXP30 EXP10-C. Do not depend on the order of evaluation for of subexpressions or the order in which side effects take place
CERT_C-EXP30EXP10-d c EXP30 EXP10-C. Do not depend on the order of evaluation for of subexpressions or the order in which side effects take place
CERT_C-EXP32EXP10-a d EXP32 EXP10-C. Do not access a volatile object through a nonvolatile reference depend on the order of evaluation of subexpressions or the order in which side effects take place
CERT_C-EXP33EXP12-a EXP33 EXP12-C. Do not read uninitialized memory ignore values returned by functions
CERT_C-EXP34EXP12-a b EXP34 EXP12-C. Do not dereference null pointers ignore values returned by functions
CERT_C-EXP35EXP14-a EXP35 EXP14-C. Do not modify objects with temporary lifetime Beware of integer promotion when performing bitwise operations on integer types smaller than int
CERT_C-EXP36EXP15-a EXP36 EXP15-C. Do not cast pointers into more strictly aligned pointer types place a semicolon on the same line as an if, for, or while statement
CERT_C-EXP37EXP16-a EXP37 EXP16-C. Call functions with the correct number and type of arguments Do not compare function pointers to constant values
CERT_C-EXP37EXP19-b a EXP37 EXP19-C. Call functions with the correct number and type of arguments Use braces for the body of an if, for, or while statement
CERT_C-EXP37EXP20-c a EXP37 EXP20-C. Call functions with the correct number and type of arguments Perform explicit tests to determine success, true and false, and equality
CERT_C-EXP37EXP30-d a EXP37 EXP30-C. Call functions with the correct number and type of arguments Do not depend on the order of evaluation for side effects
CERT_C-EXP39EXP30-a b EXP39 EXP30-C. Do not access a variable through a pointer of an incompatible type depend on the order of evaluation for side effects
CERT_C-EXP39EXP30-b c EXP39 EXP30-C. Do not access a variable through a pointer of an incompatible type depend on the order of evaluation for side effects
CERT_C-EXP39EXP30-c d EXP39 EXP30-C. Do not access a variable through a pointer of an incompatible type depend on the order of evaluation for side effects
CERT_C-EXP39EXP32-d a EXP39 EXP32-C. Do not access a variable volatile object through a pointer of an incompatible type nonvolatile reference
CERT_C-EXP39EXP33-e a EXP39 EXP33-C. Do not access a variable through a pointer of an incompatible type read uninitialized memory
CERT CERT_C-EXP39EXP34-f a EXP39 EXP34-C. Do not access a variable through a pointer of an incompatible type dereference null pointers
CERT_C-EXP40EXP35-a EXP40 EXP35-C. Do not modify constant objects with temporary lifetime
CERT_C-EXP42EXP36-a EXP42 EXP36-C. Do not compare padding data cast pointers into more strictly aligned pointer types
CERT_C-EXP43EXP37-a EXP43 EXP37-C. Avoid undefined behavior when using restrict-qualified pointers Call functions with the correct number and type of arguments
CERT_C-EXP44EXP37-a b EXP44 EXP37-C. Do not rely on side effects in operands to sizeof, _Alignof, or _Generic Call functions with the correct number and type of arguments
CERT_C-EXP37-c EXP37-C. Call functions with the correct number and type of arguments
CERT_C-EXP44EXP37-b d EXP44 EXP37-C. Do not rely on side effects in operands to sizeof, _Alignof, or _Generic Call functions with the correct number and type of arguments
CERT_C-EXP45EXP39-a EXP45 EXP39-C. Do not perform assignments in selection statements access a variable through a pointer of an incompatible type
CERT_C-EXP45EXP39-b EXP45 EXP39-C. Do not perform assignments in selection statements access a variable through a pointer of an incompatible type
CERT_C-EXP45EXP39-c EXP45 EXP39-C. Do not perform assignments in selection statements access a variable through a pointer of an incompatible type
CERT_C-EXP45EXP39-d EXP45 EXP39-C. Do not perform assignments in selection statements access a variable through a pointer of an incompatible type
CERT_C-EXP46EXP39-a e EXP46 EXP39-C. Do not use a bitwise operator with a Boolean-like operand access a variable through a pointer of an incompatible type
CERT_C-EXP46EXP39-b f EXP46 EXP39-C. Do not use a bitwise operator with a Boolean-like operand access a variable through a pointer of an incompatible type
CERT_C-EXP47EXP40-a EXP47 EXP40-C. Do not call va_arg with an argument of the incorrect type modify constant objects
CERT_C-FIO01EXP42-a FIO01 EXP42-C. Be careful using functions that use file names for identification Do not compare padding data
CERT_C-FIO01EXP43-b a FIO01 EXP43-C. Be careful using functions that use file names for identification Avoid undefined behavior when using restrict-qualified pointers
CERT_C-FIO21EXP44-a FIO21 EXP44-C. Do not create temporary files in shared directories rely on side effects in operands to sizeof, _Alignof, or _Generic
CERT_C-FIO30EXP44-a b FIO30 EXP44-C. Exclude user input from format strings Do not rely on side effects in operands to sizeof, _Alignof, or _Generic
CERT_C-FIO30EXP45-b a FIO30 EXP45-C. Exclude user input from format strings Do not perform assignments in selection statements
CERT_C-FIO30EXP45-c b FIO30 EXP45-C. Exclude user input from format strings Do not perform assignments in selection statements
CERT_C-FIO34EXP45-a c FIO34 EXP45-C. Distinguish between characters read from a file and EOF or WEOF Do not perform assignments in selection statements
CERT_C-FIO37EXP45-a d FIO37 EXP45-C. Do not assume that fgets() or fgetws() returns a nonempty string when successful perform assignments in selection statements
CERT_C-FIO38EXP46-a FIO38 EXP46-C. Do not copy a FILE object use a bitwise operator with a Boolean-like operand
CERT_C-FIO39EXP46-a b FIO39 EXP46-C. Do not alternately input and output from a stream without an intervening flush or positioning call CERT_C-FIO40-a FIO40-C. Reset strings on fgets() or fgetws() failure use a bitwise operator with a Boolean-like operand
CERT_C-FIO41EXP47-a FIO41 EXP47-C. Do not call getc(), putc(), getwc(), or putwc() with a stream argument that has side effects va_arg with an argument of the incorrect type
CERT_C-FIO01-a FIO01-C. Be careful using functions that use file names for identification
CERT_C-FIO41FIO01-b FIO41 FIO01-C. Do not call getc(), putc(), getwc(), or putwc() with a stream argument that has side effects Be careful using functions that use file names for identification
CERT_C-FIO41FIO21-c a FIO41 FIO21-C. Do not call getc(), putc(), getwc(), or putwc() with a stream argument that has side effects
CERT_C-FIO41-d FIO41-C. Do not call getc(), putc(), getwc(), or putwc() with a stream argument that has side effects
CERT_C-FIO41-e FIO41-C. Do not call getc(), putc(), getwc(), or putwc() with a stream argument that has side effects
CERT_C-FIO42-a FIO42-C. Close files when they are no longer needed
CERT_C-FIO44-a FIO44-C. Only use values for fsetpos() that are returned from fgetpos()
CERT_C-FIO45-a FIO45-C. Avoid TOCTOU race conditions while accessing files
CERT_C-FIO46-a FIO46-C. Do not access a closed file
CERT_C-FIO47-a FIO47-C. Use valid format strings
CERT_C-FIO47-b FIO47-C. Use valid format strings
CERT_C-FIO47-c FIO47-C. Use valid format strings
CERT_C-FIO47-d FIO47-C. Use valid format strings
CERT_C-FIO47-e FIO47-C. Use valid format strings
CERT_C-FIO47-f FIO47-C. Use valid format strings
CERT_C-FLP00-a FLP00-C. Understand the limitations of floating-point numbers
CERT_C-FLP02-a FLP02-C. Avoid using floating-point numbers when precise computation is needed
CERT_C-FLP03-a FLP03-C. Detect and handle floating-point errors
CERT_C-FLP03-b FLP03-C. Detect and handle floating-point errors
CERT_C-FLP03-c FLP03-C. Detect and handle floating-point errors
CERT_C-FLP03-d FLP03-C. Detect and handle floating-point errors
CERT_C-FLP06-a FLP06-C. Convert integers to floating point for floating-point operations
CERT_C-FLP06-b FLP06-C. Convert integers to floating point for floating-point operations
CERT_C-FLP30-a FLP30-C. Do not use floating-point variables as loop counters
CERT_C-FLP32-a FLP32-C. Prevent or detect domain and range errors in math functions
CERT_C-FLP34-a FLP34-C. Ensure that floating-point conversions are within range of the new type
CERT_C-FLP36-a FLP36-C. Preserve precision when converting integral values to floating-point type
CERT_C-FLP36-b FLP36-C. Preserve precision when converting integral values to floating-point type
CERT_C-FLP37-a FLP37-C. Do not use object representations to compare floating-point values
CERT_C-FLP37-b FLP37-C. Do not use object representations to compare floating-point values
CERT_C-FLP37-c FLP37-C. Do not use object representations to compare floating-point values
CERT_C-INT02-a INT02-C. Understand integer conversion rules
CERT_C-INT02-b INT02-C. Understand integer conversion rules
CERT_C-INT04-a INT04-C. Enforce limits on integer values originating from tainted sources
CERT_C-INT04-b INT04-C. Enforce limits on integer values originating from tainted sources
CERT_C-INT04-c INT04-C. Enforce limits on integer values originating from tainted sources
CERT_C-INT05-a INT05-C. Do not use input functions to convert character data if they cannot handle all possible inputs
CERT_C-INT07-a INT07-C. Use only explicitly signed or unsigned char type for numeric values
CERT_C-INT07-b INT07-C. Use only explicitly signed or unsigned char type for numeric values
CERT_C-INT09-a INT09-C. Ensure enumeration constants map to unique values
CERT_C-INT10-a INT10-C. Do not assume a positive remainder when using the % operator
CERT_C-INT12-a INT12-C. Do not make assumptions about the type of a plain int bit-field when used in an expression
CERT_C-INT13-a INT13-C. Use bitwise operators only on unsigned operands
CERT_C-INT16-a INT16-C. Do not make assumptions about representation of signed integers
CERT_C-INT18-a INT18-C. Evaluate integer expressions in a larger size before comparing or assigning to that size
CERT_C-INT18-b INT18-C. Evaluate integer expressions in a larger size before comparing or assigning to that size
CERT_C-INT18-c INT18-C. Evaluate integer expressions in a larger size before comparing or assigning to that size
CERT_C-INT30-a INT30-C. Ensure that unsigned integer operations do not wrap
CERT_C-INT30-b INT30-C. Ensure that unsigned integer operations do not wrap
CERT_C-INT30-c INT30-C. Ensure that unsigned integer operations do not wrap
create temporary files in shared directories
CERT_C-FIO22-a FIO22-C. Close files before spawning processes
CERT_C-FIO24-a FIO24-C. Do not open a file that is already open
CERT_C-FIO30-a FIO30-C. Exclude user input from format strings
CERT_C-FIO30-b FIO30-C. Exclude user input from format strings
CERT_C-FIO30-c FIO30-C. Exclude user input from format strings
CERT_C-FIO32-a FIO32-C. Do not perform operations on devices that are only appropriate for files
CERT_C-FIO34-a FIO34-C. Distinguish between characters read from a file and EOF or WEOF
CERT_C-FIO37-a FIO37-C. Do not assume that fgets() or fgetws() returns a nonempty string when successful
CERT_C-FIO38-a FIO38-C. Do not copy a FILE object
CERT_C-FIO39-a FIO39-C. Do not alternately input and output from a stream without an intervening flush or positioning call
CERT_C-FIO40-a FIO40-C. Reset strings on fgets() or fgetws() failure
CERT_C-FIO41-a FIO41-C. Do not call getc(), putc(), getwc(), or putwc() with a stream argument that has side effects
CERT_C-FIO41-b FIO41-C. Do not call getc(), putc(), getwc(), or putwc() with a stream argument that has side effects
CERT_C-FIO41-c FIO41-C. Do not call getc(), putc(), getwc(), or putwc() with a stream argument that has side effects
CERT_C-FIO41-d FIO41-C. Do not call getc(), putc(), getwc(), or putwc() with a stream argument that has side effects
CERT_C-FIO41-e FIO41-C. Do not call getc(), putc(), getwc(), or putwc() with a stream argument that has side effects
CERT_C-FIO42-a FIO42-C. Close files when they are no longer needed
CERT_C-FIO44-a FIO44-C. Only use values for fsetpos() that are returned from fgetpos()
CERT_C-FIO45-a FIO45-C. Avoid TOCTOU race conditions while accessing files
CERT_C-FIO46-a FIO46-C. Do not access a closed file
CERT_C-FIO47-a FIO47-C. Use valid format strings
CERT_C-FIO47-b FIO47-C. Use valid format strings
CERT_C-FIO47-c FIO47-C. Use valid format strings
CERT_C-FIO47-d FIO47-C. Use valid format strings
CERT_C-FIO47-e FIO47-C. Use valid format strings
CERT_C-FIO47-f FIO47-C. Use valid format strings
CERT_C-FLP00-a FLP00-C. Understand the limitations of floating-point numbers
CERT_C-FLP02-a FLP02-C. Avoid using floating-point numbers when precise computation is needed
CERT_C-FLP03-a FLP03-C. Detect and handle floating-point errors
CERT_C-FLP03-b FLP03-C. Detect and handle floating-point errors
CERT_C-FLP03-c FLP03-C. Detect and handle floating-point errors
CERT_C-FLP03-d FLP03-C. Detect and handle floating-point errors
CERT_C-FLP06-a FLP06-C. Convert integers to floating point for floating-point operations
CERT_C-FLP06-b FLP06-C. Convert integers to floating point for floating-point operations
CERT_C-FLP30-a FLP30-C. Do not use floating-point variables as loop counters
CERT_C-FLP32-a FLP32-C. Prevent or detect domain and range errors in math functions
CERT_C-FLP34-a FLP34-C. Ensure that floating-point conversions are within range of the new type
CERT_C-FLP36-a FLP36-C. Preserve precision when converting integral values to floating-point type
CERT_C-FLP36-b FLP36-C. Preserve precision when converting integral values to floating-point type
CERT_C-FLP37-a FLP37-C. Do not use object representations to compare floating-point values
CERT_C-FLP37-b FLP37-C. Do not use object representations to compare floating-point values
CERT_C-FLP37-c FLP37-C. Do not use object representations to compare floating-point values
CERT_C-INT02-a INT02-C. Understand integer conversion rules
CERT_C-INT02-b INT02-C. Understand integer conversion rules
CERT_C-INT04-a INT04-C. Enforce limits on integer values originating from tainted sources
CERT_C-INT04-b INT04-C. Enforce limits on integer values originating from tainted sources
CERT_C-INT04-c INT04-C. Enforce limits on integer values originating from tainted sources
CERT_C-INT05-a INT05-C. Do not use input functions to convert character data if they cannot handle all possible inputs
CERT_C-INT07-a INT07-C. Use only explicitly signed or unsigned char type for numeric values
CERT_C-INT07-b INT07-C. Use only explicitly signed or unsigned char type for numeric values
CERT_C-INT08-a INT08-C. Verify that all integer values are in range
CERT_C-INT09-a INT09-C. Ensure enumeration constants map to unique values
CERT_C-INT10-a INT10-C. Do not assume a positive remainder when using the % operator
CERT_C-INT12-a INT12-C. Do not make assumptions about the type of a plain int bit-field when used in an expression
CERT_C-INT13-a INT13-C. Use bitwise operators only on unsigned operands
CERT_C-INT15-a INT15-C. Use intmax_t or uintmax_t for formatted IO on programmer-defined integer types
CERT_C-INT16-a INT16-C. Do not make assumptions about representation of signed integers
CERT_C-INT18-a INT18-C. Evaluate integer expressions in a larger size before comparing or assigning to that size
CERT_C-INT18-b INT18-C. Evaluate integer expressions in a larger size before comparing or assigning to that size
CERT_C-INT18-c INT18-C. Evaluate integer expressions in a larger size before comparing or assigning to that size
CERT_C-INT30-a INT30-C. Ensure that unsigned integer operations do not wrap
CERT_C-INT30-b INT30-C. Ensure that unsigned integer operations do not wrap
CERT_C-INT30-c INT30-C. Ensure that unsigned integer operations do not wrap
CERT_C-INT31-a INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-b INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-c INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-d INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-e INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-f INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-g INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-h INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-i CERT_C-INT31-a INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-b j INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-c k INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-d l INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-e m INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31-f n INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data
CERT_C-INT31INT32-g a INT31 INT32-C. Ensure that integer conversions operations on signed integers do not result in lost or misinterpreted data overflow
CERT_C-INT31INT32-h b INT31 INT32-C. Ensure that integer conversions operations on signed integers do not result in lost or misinterpreted data overflow
CERT_C-INT31INT32-i c INT31 INT32-C. Ensure that integer conversions operations on signed integers do not result in lost or misinterpreted data overflow
CERT_C-INT31INT33-j a INT31 INT33-C. Ensure that integer conversions division and remainder operations do not result in lost or misinterpreted data divide-by-zero errors
CERT_C-INT31INT34-k a INT31 INT34-C. Ensure that integer conversions do not result in lost or misinterpreted data Do not shift an expression by a negative number of bits or by greater than or equal to the number of bits that exist in the operand
CERT_C-INT31INT35-l a INT31 INT35-C. Ensure that integer conversions do not result in lost or misinterpreted data Use correct integer precisions
CERT_C-INT31INT36-m a INT31 INT36-C. Ensure that integer conversions do not result in lost or misinterpreted data Converting a pointer to integer or integer to pointer
CERT_C-INT31INT36-n b INT31 INT36-C. Ensure that integer conversions do not result in lost or misinterpreted data Converting a pointer to integer or integer to pointer
CERT_C-INT32MEM00-a INT32 MEM00-C. Ensure that operations on signed integers do not result in overflow Allocate and free memory in the same module, at the same level of abstraction
CERT_C-INT32MEM00-b INT32 MEM00-C. Ensure that operations on signed integers do not result in overflow Allocate and free memory in the same module, at the same level of abstraction
CERT_C-INT32MEM00-c INT32 MEM00-C. Ensure that operations on signed integers do not result in overflow Allocate and free memory in the same module, at the same level of abstraction
CERT_C-INT33MEM00-a d INT33 MEM00-C. Ensure that division and remainder operations do not result in divide-by-zero errors Allocate and free memory in the same module, at the same level of abstraction
CERT_C-INT34MEM00-a e INT34 MEM00-C. Do not shift an expression by a negative number of bits or by greater than or equal to the number of bits that exist in the operand Allocate and free memory in the same module, at the same level of abstraction
CERT_C-INT35MEM01-a INT35 MEM01-C. Use correct integer precisions Store a new value in pointers immediately after free()
CERT_C-INT36MEM01-a b INT36 MEM01-C. Converting a pointer to integer or integer to pointer Store a new value in pointers immediately after free()
CERT_C-INT36MEM01-b c INT36 MEM01-C. Converting a pointer to integer or integer to pointer Store a new value in pointers immediately after free()
CERT_C-MEM00MEM01-a d MEM00 MEM01-C. Allocate and free memory in the same module, at the same level of abstraction Store a new value in pointers immediately after free()
CERT_C-MEM00MEM02-b a MEM00 MEM02-C. Allocate and free memory in the same module, at the same level of abstraction Immediately cast the result of a memory allocation function call into a pointer to the allocated type
CERT_C-MEM00MEM02-c b MEM00 MEM02-C. Allocate and free memory in the same module, at the same level of abstraction Immediately cast the result of a memory allocation function call into a pointer to the allocated type
CERT_C-MEM01MEM04-a MEM01 MEM04-C. Store a new value in pointers immediately after free() Beware of zero-length allocations
CERT_C-MEM01MEM05-b a MEM01 MEM05-C. Store a new value in pointers immediately after free() Avoid large stack allocations
CERT_C-MEM01MEM05-c b MEM01 MEM05-C. Store a new value in pointers immediately after free() Avoid large stack allocations
CERT_C-MEM01MEM07-d a MEM01 MEM07-C. Store a new value in pointers immediately after free() Ensure that the arguments to calloc(), when multiplied, do not wrap
CERT_C-MEM12-a MEM12-C. Consider using a goto chain when leaving a function on error when using and releasing resources
CERT_C-MEM30-a MEM30-C. Do not access freed memory
CERT_C-MEM31-a MEM31-C. Free dynamically allocated memory when no longer needed
CERT_C-MEM33-a MEM33-C. Allocate and copy structures containing a flexible array member dynamically
CERT_C-MEM33-b MEM33-C. Allocate and copy structures containing a flexible array member dynamically
CERT_C-MEM34-a MEM34-C. Only free memory allocated dynamically
CERT_C-MEM35-a MEM35-C. Allocate sufficient memory for an object
CERT_C-MEM36-a MEM36-C. Do not modify the alignment of objects by calling realloc()
CERT_C-MSC01-a MSC01-C. Strive for logical completeness
CERT_C-MSC01-b MSC01-C. Strive for logical completeness
CERT_C-MSC04-a MSC04-C. Use comments consistently and in a readable fashion
CERT_C-MSC04-b MSC04-C. Use comments consistently and in a readable fashion
CERT_C-MSC04-c MSC04-C. Use comments consistently and in a readable fashion
CERT_C-MSC04-d MSC04-C. Use comments consistently and in a readable fashion
CERT_C-MSC07-a MSC07-C. Detect and remove dead code
CERT_C-MSC07-b MSC07-C. Detect and remove dead code
CERT_C-MSC07-c MSC07-C. Detect and remove dead code
CERT_C-MSC07-d MSC07-C. Detect and remove dead code
CERT_C-MSC07-e MSC07-C. Detect and remove dead code
CERT_C-MSC07-f MSC07-C. Detect and remove dead code
CERT_C-MSC07-g MSC07-C. Detect and remove dead code
CERT_C-MSC07-h MSC07-C. Detect and remove dead code
CERT_C-MSC09-a MSC09-C. Character encoding: Use subset of ASCII for safety
CERT_C-MSC11-a MSC11-C. Incorporate diagnostic tests using assertions
CERT_C-MSC12-a MSC12-C. Detect and remove code that has no effect or is never executed
CERT_C-MSC12-b MSC12-C. Detect and remove code that has no effect or is never executed
CERT_C-MSC12-c MSC12-C. Detect and remove code that has no effect or is never executed
CERT_C-MSC12-d MSC12-C. Detect and remove code that has no effect or is never executed
CERT_C-MSC12-e MSC12-C. Detect and remove code that has no effect or is never executed
CERT_C-MSC12-f MSC12-C. Detect and remove code that has no effect or is never executed
CERT_C-MSC12-g MSC12-C. Detect and remove code that has no effect or is never executed
CERT_C-MSC12-h MSC12-C. Detect and remove code that has no effect or is never executed
CERT_C-MSC13-a MSC13-C. Detect and remove unused values
CERT_C-MSC14-a MSC14-C. Do not introduce unnecessary platform dependencies
CERT_C-MSC15-a MSC15-C. Do not depend on undefined behavior
CERT_C-MSC17-a MSC17-C. Finish every set of statements associated with a case label with a break statement
CERT_C-MSC19-a MSC19-C. For functions that return an array, prefer returning an empty array over a null value
CERT_C-MSC19-b MSC19-C. For functions that return an array, prefer returning an empty array over a null value
CERT_C-MSC22-a MSC22-C. Use the setjmp(), longjmp() facility securely
CERT_C-MSC24-a MSC24-C. Do not use deprecated or obsolescent functions
CERT_C-MSC24-b MSC24-C. Do not use deprecated or obsolescent functions
CERT_C-MSC24-c MSC24-C. Do not use deprecated or obsolescent functions
CERT_C-MSC24-d MSC24-C. Do not use deprecated or obsolescent functions
CERT_C-MSC30-a MSC30-C. Do not use the rand() function for generating pseudorandom numbers
CERT_C-MSC32-a MSC32-C. Properly seed pseudorandom number generators
CERT_C-MSC32-b MSC32-C. Properly seed pseudorandom number generators
CERT_C-MSC32-c MSC32-C. Properly seed pseudorandom number generators
CERT_C-MSC32-d MSC32-C. Properly seed pseudorandom number generators
CERT_C-MSC33-a MSC33-C. Do not pass invalid data to the asctime() function
CERT_C-MSC37-a MSC37-C. Ensure that control never reaches the end of a non-void function
CERT_C-MSC38-a MSC38-C. Do not treat a predefined identifier as an object if it might only be implemented as a macro
CERT_C-MSC39-a MSC39-C. Do not call va_arg() on a va_list that has an indeterminate value
CERT_C-MSC40-a MSC40-C. Do not violate constraints
CERT_C-MSC41-a MSC41-C. Never hard code sensitive information
CERT_C-POS30-a POS30-C. Use the readlink() function properly
CERT_C-POS30-b POS30-C. Use the readlink() function properly
CERT_C-POS30-c POS30-C. Use the readlink() function properly
CERT_C-POS33-a POS33-C. Do not use vfork()
CERT_C-POS34-a POS34-C. Do not call putenv() with a pointer to an automatic variable as the argument
CERT_C-POS34-b POS34-C. Do not call putenv() with a pointer to an automatic variable as the argument
CERT_C-POS35-a POS35-C. Avoid race conditions while checking for the existence of a symbolic link
CERT_C-POS35-b POS35-C. Avoid race conditions while checking for the existence of a symbolic link
CERT_C-POS36-a POS36-C. Observe correct revocation order while relinquishing privileges
CERT_C-POS37-a POS37-C. Ensure that privilege relinquishment is successful
CERT_C-POS38-a POS38-C. Beware of race conditions when using fork and file descriptors
CERT_C-POS39-a POS39-C. Use the correct byte ordering when transferring data between systems
CERT_C-POS44-a POS44-C. Do not use signals to terminate threads
CERT_C-POS47-a POS47-C. Do not use threads that can be canceled asynchronously
CERT_C-POS48-a POS48-C. Do not unlock or destroy another POSIX thread's mutex
CERT_C-POS48-b POS48-C. Do not unlock or destroy another POSIX thread's mutex
CERT_C-POS49-a POS49-C. When data must be accessed by multiple threads, provide a mutex and guarantee no adjacent data is also accessed
CERT_C-POS50-a POS50-C. Declare objects shared between POSIX threads with appropriate storage durations
CERT_C-POS51-a POS51-C. Avoid deadlock with POSIX threads by locking in predefined order
CERT_C-POS52-a POS52-C. Do not perform operations that can block while holding a POSIX lock
CERT_C-POS53-a POS53-C. Do not use more than one mutex for concurrent waiting operations on a condition variable
CERT_C-POS54-a POS54-C. Detect and handle POSIX library errors
CERT_C-POS54-b POS54-C. Detect and handle POSIX library errors
CERT_C-POS54-c POS54-C. Detect and handle POSIX library errors
CERT_C-PRE00-a PRE00-C. Prefer inline or static functions to function-like macros
CERT_C-PRE01-a PRE01-C. Use parentheses within macros around parameter names
CERT_C-PRE02-a PRE02-C. Macro replacement lists should be parenthesized
CERT_C-PRE06-a PRE06-C. Enclose header files in an include guard
CERT_C-PRE07-a PRE07-C. Avoid using repeated question marks
CERT_C-PRE30-a PRE30-C. Do not create a universal character name through concatenation
CERT_C-PRE31-a PRE31-C. Avoid side effects in arguments to unsafe macros
CERT_C-PRE31-b PRE31-C. Avoid side effects in arguments to unsafe macros
CERT_C-PRE31-c PRE31-C. Avoid side effects in arguments to unsafe macros
CERT_C-PRE31-d PRE31-C. Avoid side effects in arguments to unsafe macros
CERT_C-PRE32-a PRE32-C. Do not use preprocessor directives in invocations of function-like macros
CERT_C-SIG00-a SIG00-C. Mask signals handled by noninterruptible signal handlers
CERT_C-SIG01-a SIG01-C. Understand implementation-specific details regarding signal handler persistence
CERT_C-SIG02-a SIG02-C. Avoid using signals to implement normal functionality
CERT_C-SIG30-a SIG30-C. Call only asynchronous-safe functions within signal handlers
CERT_C-SIG31-a SIG31-C. Do not access shared objects in signal handlers
CERT_C-SIG34-a SIG34-C. Do not call signal() from within interruptible signal handlers
CERT_C-SIG35-a SIG35-C. Do not return from a computational exception signal handler
CERT_C-STR00-a STR00-C. Represent characters using an appropriate type
CERT_C-STR02-a STR02-C. Sanitize data passed to complex subsystems
CERT_C-STR02-b STR02-C. Sanitize data passed to complex subsystems
CERT_C-STR02-c STR02-C. Sanitize data passed to complex subsystems
CERT_C-STR03-a STR03-C. Do not inadvertently truncate a string
CERT_C-STR04-a STR04-C. Use plain char for characters in the basic character set
CERT_C-STR05-a STR05-C. Use pointers to const when referring to string literals
CERT_C-STR07-a STR07-C. Use the bounds-checking interfaces for string manipulation
CERT_C-STR09-a STR09-C. Don't assume numeric values for expressions with type plain character
CERT_C-STR10-a STR10-C. Do not concatenate different type of string literals
CERT_C-STR11-a STR11-C. Do not specify the bound of a character array initialized with a string literal
CERT_C-STR30-a STR30-C. Do not attempt to modify string literals
CERT_C-STR30-b STR30-C. Do not attempt to modify string literals
CERT_C-STR31-a STR31-C. Guarantee that storage for strings has sufficient space for character data and the null terminator
CERT_C-STR31-b STR31-C. Guarantee that storage for strings has sufficient space for character data and the null terminator
CERT_C-STR31-c STR31-C. Guarantee that storage for strings has sufficient space for character data and the null terminator
CERT_C-STR31-d STR31-C. Guarantee that storage for strings has sufficient space for character data and the null terminator
CERT_C-STR31-e STR31-C. Guarantee that storage for strings has sufficient space for character data and the null terminator
CERT_C-STR32-a STR32-C. Do not pass a non-null-terminated character sequence to a library function that expects a string
CERT_C-STR34-a STR34-C. Cast characters to unsigned char before converting to larger integer sizes
CERT_C-STR34-b STR34-C. Cast characters to unsigned char before converting to larger integer sizes
CERT_C-STR34-c STR34-C. Cast characters to unsigned char before converting to larger integer sizes
CERT_C-STR34-d STR34-C. Cast characters to unsigned char before converting to larger integer sizes
CERT_C-STR34-e STR34-C. Cast characters to unsigned char before converting to larger integer sizes
CERT_C-STR34-f STR34-C. Cast characters to unsigned char before converting to larger integer sizes
CERT_C-STR37-a STR37-C. Arguments to character-handling functions must be representable as an unsigned char
CERT_C-STR38-a STR38-C. Do not confuse narrow and wide character strings and functions
CERT_C-WIN00-a WIN00-C. Be specific when dynamically loading libraries
CERT_C-WIN30-a WIN30-C. Properly pair allocation and deallocation functions
Detects dangling pointers at runtime MEM01-C. Store a new value in pointers immediately after free()
Runtime analysis DCL40-C. Do not create incompatible declarations of the same function or object
Runtime analysis EXP33-C. Do not read uninitialized memory
Runtime analysis EXP34-C. Do not dereference null pointers
Runtime analysis INT32-C. Ensure that operations on signed integers do not result in overflow
Runtime analysis INT33-C. Ensure that division and remainder operations do not result in divide-by-zero errors
Runtime analysis ARR30-C. Do not form or use out-of-bounds pointers or array subscripts
Runtime analysis ARR38-C. Guarantee that library functions do not form invalid pointers
Runtime analysis MEM30-C. Do not access freed memory
Runtime analysis MEM31-C. Free dynamically allocated memory when no longer needed
Runtime analysis MEM34-C. Only free memory allocated dynamically
Runtime analysis ERR33-C. Detect and handle standard library errors
Runtime analysis DCL11-C. Understand the type issues associated with variadic functions
Runtime analysis EXP08-C. Ensure pointer arithmetic is used correctly
Runtime analysis FLP03-C. Detect and handle floating-point errors
Runtime analysis MEM00-C. Allocate and free memory in the same module, at the same level of abstraction
Runtime analysis STR07-C. Use the bounds-checking interfaces for string manipulation