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Slightly better decltype() support for expressions

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decltype now accepts C++ expressions instead of just an ID, such as:

  int i,j;
  ...  decltype(i+j) ...
  ...  decltype(&i) ...

These result in a warning for non-trivial expressions which SWIG cannot evaluate:

  Warning 344: Unable to deduce decltype for 'i+j'.

See 'Type Inference' in CPlusPlus.html for workarounds.

Issue #1589
Issue #1590
This commit is contained in:
William S Fulton 2022-11-26 01:16:20 +00:00
commit 2a1711e436
8 changed files with 85 additions and 14 deletions
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Doc/Manual/Warnings.html
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@ -438,6 +438,9 @@ example.i(4) : Syntax error in input(1).
<li>325. Nested <em>kind</em> not currently supported (<em>name</em> ignored).
<li>326. Deprecated %extend name used - the <em>kind</em> name '<em>name</em>' should be used instead of the typedef name '<em>name</em>'.
<li>327. Extern template ignored.
<li>340. Lambda expressions and closures are not fully supported yet.
<li>343. Only the first variadic template argument is currently supported.
<li>344. Unable to deduce decltype for '<em>expr</em>'.
<li>350. operator new ignored.
<li>351. operator delete ignored.
<li>352. operator+ ignored.