Detectors Overview

Built-in Detectors

#	Detector	Severity	Category	Requires Soufflé	Enabled by default
1	ArgCopyMutation	High	Security		✔
2	AsmIsUsed	Info	Security
3	BranchDuplicate	High	Security		✔
4	CellBounds	Critical	Security		✔
5	ConstantAddress	Info	Security
6	DivideBeforeMultiply	High	Security	✔	✔
7	DumpIsUsed	Info	Security
8	DuplicatedCondition	High	Security		✔
9	DuplicatedImport	Medium	Optimization		✔
10	EnsurePrgSeed	Medium	Security		✔
11	EtaLikeSimplifications	Low	Optimization		✔
12	ExitCodeUsage	High	Security		✔
13	FalseCondition	Medium	Security		✔
14	FieldDoubleInit	Medium	Optimization		✔
15	ImplicitOpcode	Info	Best Practices
16	InheritedStateMutation	Low	Best Practices
17	NeverAccessedVariables	Medium	Security		✔
18	OptimalMathFunction	Low	Optimization		✔
19	PreferAugmentedAssign	Info	Best Practices
20	PreferBinaryReceiver	Low	Optimization		✔
21	PreferGlobalFunction	Low	Optimization		✔
22	PreferSenderFunction	Low	Optimization		✔
23	PreferredStdlibApi	Info—Low	Optimization, Security		✔
24	ReadOnlyVariables	Medium	Security	✔	✔
25	RedundantBooleanExpression	Medium	Security		✔
26	SendInLoop	Medium	Security
27	ShortCircuitCondition	Low	Optimization		✔
28	StateMutationInGetter	Info	Security
29	StringReceiversOverlap	High	Security		✔
30	SuboptimalCellOperation	Medium	Optimization		✔
31	SuboptimalSend	Medium	Optimization		✔
32	SuspiciousLoop	Medium	Security		✔
33	SuspiciousMessageMode	Low—Medium	Security		✔
34	TransitiveImport	Medium	Best Practices		✔
35	UnboundLoop	High	Security	✔	✔
36	UnboundMap	Low	Security
37	UnprotectedCall	High	Security		✔
38	UnusedExpressionResult	Medium	Security		✔
39	UnusedMethodArgument	Low	Optimization		✔
40	UnusedOptional	Low	Optimization		✔
41	ZeroAddress	Low	Security		✔

Some of the detectors require Soufflé to be installed. If no Soufflé installation is found, these detectors won't be executed.

A few detectors are optional and aimed at auditors to help uncover subtle issues in the source code. To enable all detectors, use the --all-detectors option. You can find a full list of configuration options on the configuration page.

Each detector targets a specific type of problem in your code. Click on the detector name to learn more.

Detector Severities and Categories

Severity Levels

Findings are classified according to their impact severity:

Severity	Description
Info	Informational findings that highlight potential improvements
Low	Minor issues with limited impact
Medium	Significant issues that should be addressed
High	Serious vulnerabilities requiring immediate attention
Critical	Severe vulnerabilities with catastrophic potential impact

Categories

Findings are organized into the following categories:

Category	Description
Security	Any possible unintended behavior leading to bugs or vulnerabilities
Optimization	Code improvements for gas-optimizations
Best Practices	General code quality advices