Is it bug, that std::rotate function have void return value type in GCC 4.9 even if I specify -std=gnu++1y flag? As it pointed here there should be meaningfull (for some applications) return value.
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manlio
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Tomilov Anatoliy
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How do you call `std::rotate`? There're two versions one returns `void` and the other an `iterator`. – 101010 Jun 02 '14 at 11:23
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Please explain what do you imply when you ask me about "how I call"? Do you know, that expected result type is not involved in overloading resolution? – Tomilov Anatoliy Jun 02 '14 at 11:26
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There is only the version. Where you seen two ones? – Tomilov Anatoliy Jun 02 '14 at 11:27
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Pre C++11 and post C++11. – 101010 Jun 02 '14 at 11:28
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@40two OK, but in particular translation unit after the preprocessing step only one is reachable anyways. Which one is depend on compiler flags. – Tomilov Anatoliy Jun 02 '14 at 11:29
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2+1 You're right, I think it's not implemented yet. Thus, it is a bug. – 101010 Jun 02 '14 at 11:35
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- It looks like
std::rotatein gcc doesn't conform to the C++11 standard (i.e., it's not implemented yet). - I searched GCC Bugzilla and it seems that the bug is already reported since version 4.8.1 and currently being unassigned with status new.
- Thus, is a bug. Well spotted you should report it.
101010
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Can you explain, why this "bug" (so little at my mind: just changing two lines of code) is not fixed at the moment? Very interesting situation in light of usefulness of the **libstdc++**. – Tomilov Anatoliy Jun 03 '14 at 02:45
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@Orient I agree with you, but for this you'll have to ask the GCC developers. – 101010 Jun 03 '14 at 06:10