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[temp.expl.spec] Should "declared before" be replaced by "reachable"? #4479

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cpplearner opened this issue Feb 4, 2021 · 2 comments · Fixed by #4489
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[temp.expl.spec] Should "declared before" be replaced by "reachable"? #4479

cpplearner opened this issue Feb 4, 2021 · 2 comments · Fixed by #4489
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@jensmaurer

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@cpplearner
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cpplearner commented Feb 4, 2021 •
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[temp.expl.spec]/7, emphasis mine:

If a template, a member template or a member of a class template is explicitly specialized then that specialization shall be declared before the first use of that specialization that would cause an implicit instantiation to take place, in every translation unit in which such a use occurs; no diagnostic is required.

Now that we have modules, this sentence should probably say "... then a declaration of that specialization shall be reachable from ..." instead.

Note that P1787R6: Declarations and where to find them updated a similar sentence in [temp.spec.partial.general], but neglected this one.
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@opensdh, any insight here?

@jensmaurer jensmaurer self-assigned this Feb 6, 2021
@jensmaurer jensmaurer mentioned this issue Feb 6, 2021
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opensdh commented Feb 8, 2021

I don't have anything to add here: it does appear to be a place I simply missed when trying to audit all uses of words like "declared before".

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[temp.expl.spec] Use 'reachable from', not 'declared before' jensmaurer/draft
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