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fix: SIGSEGV when path variable referenced inside a list-lambda #621

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Merged
adsharma merged 1 commit into from
Jun 25, 2026
Merged

fix: SIGSEGV when path variable referenced inside a list-lambda #621

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13 changes: 13 additions & 0 deletions src/optimizer/projection_push_down_optimizer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

#include <algorithm>

#include "binder/expression/lambda_expression.h"
#include "binder/expression_visitor.h"
#include "function/gds/gds_function_collection.h"
#include "function/gds/rec_joins.h"
Expand Down Expand Up @@ -334,6 +335,18 @@ void ProjectionPushDownOptimizer::collectExpressionsInUse(
}
return;
}
case ExpressionType::LAMBDA: {
// A LambdaExpression stores its body (functionExpr) separately from its
// expression children, so collectChildren() does not traverse into it.
// We need to mark expressions referenced inside the lambda body as in use,
// e.g. a path variable `p` referenced inside `any(x IN [...] WHERE p IS NOT NULL)`
// depends on the path's recursive-rel segments being materialized.
auto& lambdaExpression = expression->constCast<LambdaExpression>();
if (lambdaExpression.getFunctionExpr() != nullptr) {
collectExpressionsInUse(lambdaExpression.getFunctionExpr());
}
return;
}
default:
for (auto& child : ExpressionChildrenCollector::collectChildren(*expression)) {
collectExpressionsInUse(child);
Expand Down
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