Initialize maps before assignment

#Metadata

Rule ID

go.correctness.nil-map-assignment

Severity

high

Confidence

0.85

Languages

go

Presets

strict

Stability

stable

Applies to

block

Tags

correctness, go, rules-catalog

#Why it matters

A `var m map[K]V` declaration leaves `m` nil. Any `m[key] = value` write before `make(map[K]V)` or a map literal initialization causes a runtime panic.

#Remediation

Initialize the map with `make(map[K]V)` or a map literal before writing to it.

#Repository path

The generated metadata points to critiq-rules/libs/rules/catalog/rules/go/go.correctness.nil-map-assignment.rule.yaml.