Q
Detector Library
C detectors (34/34)
Logging of sensitive informationInsecure Use Of ChrootDeadlock And Lock InconsistencyUnsafe File ExtensionOS command injectionIncorrect Use Of FreeUse Of Uninitialized VariableInsecure Use strcat fnSQL injectionBitwise Operator On Signed OperandInsecure use gets fnRandom fd exhaustionRedundant Free UsageInsecure Use MemsetDivide By Zero.Return Stack AddressUnchecked Return ValueIncorrect Format SpecifierUnhandled Expression ResultPath traversalImproper Input ValidationOut Of Bounds ReadInteger OverflowInsecure use strtok functionImproper size of a memory bufferincomplete-cleanupNull pointer dereferenceInsecure Temporary File Or DirectoryInsecure Buffer AccessIncorrect Use Ato FnLoose File PermissionsExposure of Sensitive InformationOut-of-bounds WriteString Equality
Bitwise Operator On Signed Operand High
Using bitwise operators with signed numbers can lead to unexpected results. It's safer to use them with unsigned numbers.
Detector ID
c/bitwise-operator-on-signed-operand@v1.0
Category
Common Weakness Enumeration (CWE) 
Tags
-
Noncompliant example
1#include <stdio.h>
2
3int bitwiseOperatoronSignedOperandNonCompliant(int i) {
4 // Noncompliant: Bitwise operator applied on signed operand.
5 return 1 << i; // Noncompliant
6}
Compliant example
1#include <stdio.h>
2
3int bitwiseOperatoronSignedOperandCompliant(unsigned int i) {
4 // Compliant: Bitwise operator applied on unsigned operand.
5 return 1 << i;
6}