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CWG2873 [over.over] Is it intended that when a function is overloaded with a function template then its address cannot be taken unambiguously · Issue #516 · cplusplus/CWG · GitHub
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I think this is ill-formed because(as explained here) because the specialization from the function template cannot be formed here so nothing can be added to the set and so it is ill-formed(I may be wrong here but as far as I understand the topic this is what makes it ill-formed). But I don't think the whole program should be ill-formed here as there is another non-template function available that can be used. Instead this inability to form a specialization from the function template can be ignored as a non-template function that can be used is available.
Suggested resolution:
Maybe something like the following can be added:
The program is ill-formed if this is part of the final result of overload resolution.
The text was updated successfully, but these errors were encountered:
@jensmaurer Yes, at first I also though that the "if any" should make the program well-formed. But all compilers rejecting the program seems to suggest that it should be made more clear perhaps. Though it is possible that as per current wording("if any") all compilers are wrong but I wanted to confirm what is intended here. I will update the answer afterwards.
@jensmaurerover.over#5.sentence-2 seems to make this well-formed. Although there will be no specialization that can be generated from the function template here so nothing will be eliminated from the set. So the one candidate is the non-template function which should be used. Even if somehow a specialization could've been generated, the non-template function should've been used as per over.over#5.
jensmaurer
changed the title
[over.over] Is it intended that when a function is overloaded with a function template then its address cannot be taken unambiguously
CWG2873 [over.over] Is it intended that when a function is overloaded with a function template then its address cannot be taken unambiguously
Mar 17, 2024
Full name of submitter: Anoop Rana
Reference (section label): [over.over]
Link to reflector thread (if any): https://stackoverflow.com/questions/78170991/in-c-why-cant-i-take-the-address-of-a-function-that-also-has-a-templated-vers
Issue description:
I came across the following code that is rejected by all three compilers and seems to be ill-formed as per current wording in over.over#3.
I think this is ill-formed because(as explained here) because the specialization from the function template cannot be formed here so nothing can be added to the set and so it is ill-formed(I may be wrong here but as far as I understand the topic this is what makes it ill-formed). But I don't think the whole program should be ill-formed here as there is another non-template function available that can be used. Instead this inability to form a specialization from the function template can be ignored as a non-template function that can be used is available.
Suggested resolution:
Maybe something like the following can be added:
The text was updated successfully, but these errors were encountered: