sa6002

Documentation

Index

• Variables

Variables

var Analyzer = SCAnalyzer.Analyzer

var SCAnalyzer = lint.InitializeAnalyzer(&lint.Analyzer{
	Analyzer: &analysis.Analyzer{
		Name:     "SA6002",
		Requires: []*analysis.Analyzer{buildir.Analyzer},
		Run:      callcheck.Analyzer(rules),
	},
	Doc: &lint.RawDocumentation{
		Title: `Storing non-pointer values in \'sync.Pool\' allocates memory`,
		Text: `A \'sync.Pool\' is used to avoid unnecessary allocations and reduce the
amount of work the garbage collector has to do.

When passing a value that is not a pointer to a function that accepts
an interface, the value needs to be placed on the heap, which means an
additional allocation. Slices are a common thing to put in sync.Pools,
and they're structs with 3 fields (length, capacity, and a pointer to
an array). In order to avoid the extra allocation, one should store a
pointer to the slice instead.

See the comments on https://go-review.googlesource.com/c/go/+/24371
that discuss this problem.`,
		Since:    "2017.1",
		Severity: lint.SeverityWarning,
		MergeIf:  lint.MergeIfAny,
	},
})