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Michael PursifullandGitHub
a0c6389b58
* Guard ExpressionParser initialization with sync.Once The evaluators call InitExpressionParser on every Evaluate, so two goroutines could construct a parser at the same time. newParticipleLexer also fills in the ParticipleTokenType field on each shared participleYqRules entry as it builds the lexer, which another goroutine could be reading through getYqDefinition. These are pointer and struct field writes rather than map writes, so the runtime does not stop the process; it corrupts quietly instead. The nil check stays inside the Once so a caller that assigns ExpressionParser itself is still respected. Fixes #2788 * docs: use UK spelling for initialised in new comments Matches the existing prose convention in pkg/yqlib (operator_reduce.go, decoder_ini.go, operator_alternative_test.go). Review feedback on #2789.