pitrou commented on a change in pull request #10632:
URL: https://github.com/apache/arrow/pull/10632#discussion_r662225815
##########
File path: cpp/src/arrow/compute/exec/expression.cc
##########
@@ -62,6 +62,11 @@ Expression call(std::string function,
std::vector<Expression> arguments,
call.function_name = std::move(function);
call.arguments = std::move(arguments);
call.options = std::move(options);
+
+ call.hash = std::hash<std::string>{}(call.function_name);
Review comment:
Ah, I had missed the Valgrind failure. My bad.
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