================
@@ -1802,6 +1802,12 @@ void ItaniumCXXABI::emitVTableDefinitions(CodeGenVTables
&CGVT,
if (VTable->hasInitializer())
return;
+ // If the class is attached to a C++ named module other than the one
+ // we're currently compiling, the vtable should be defined there.
+ if (Module *M = RD->getOwningModule();
+ M && M->isNamedModule() && M != CGM.getContext().getCurrentNamedModule())
----------------
dwblaikie wrote:
this idiom is repeated in a few places, and is a bit long-winded. Perhaps it
could be made into some common function/shared (if the `hasExternalDefinition`
thing can't be made to work more generally)
https://github.com/llvm/llvm-project/pull/75912
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