================
@@ -547,6 +547,15 @@ static void DoEmitAvailabilityWarning(Sema &S,
AvailabilityResult K,
return;
}
case AR_Deprecated:
+ // Suppress -Wdeprecated-declarations in purely implicit special-member
functions.
+ if (auto *MD = dyn_cast_if_present<CXXMethodDecl>(S.getCurFunctionDecl());
+ MD && MD->isImplicit() && MD->isDefaulted() &&
+ (isa<CXXConstructorDecl, CXXDestructorDecl>(MD) ||
+ MD->isCopyAssignmentOperator() ||
+ MD->isMoveAssignmentOperator())) {
+ return;
+ }
+
----------------
shashi1687 wrote:
**“dyn_cast_if_present<FunctionDeck>” causes compile errors**
There is no FunctionDeck class in Clang’s AST, so that cast will never compile.
The correct cast here is to CXXMethodDecl (or at most to FunctionDecl). We’ve
updated the code to use:
```
if (auto *MD = dyn_cast_if_present<CXXMethodDecl>(…);
MD && MD->isImplicit() /*…etc…*/ )
return;
```
This change compiles cleanly and continues to limit suppression to only the
implicitly-generated special-member methods.
https://github.com/llvm/llvm-project/pull/147400
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