[PATCH] D71729: [CommandLine] Add template instantiations of cl::parser for long and long long.

[Riyaz V Puthiyapurayil via Phabricator via llvm-commits]

RVP added inline comments.
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Comment at: llvm/include/llvm/Support/CommandLine.h:997
+//
+template <> class parser<long> final : public basic_parser<long> {
+public:
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Why is this declared as `final`. None of the other parsers are `final`. The CommandLine documentation for writing custom parsers shows that users may extend `parser<unsigned>`. So why can't they extend `parser<long>`?


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  https://reviews.llvm.org/D71729/new/

https://reviews.llvm.org/D71729