[cfi] Safe handling of unaddressable vtable pointers (clang).
Avoid crashing when printing diagnostics for vtable-related CFI
errors. In diagnostic mode, the frontend does an additional check of
the vtable pointer against the set of all known vtable addresses and
lets the runtime handler know if it is safe to inspect the vtable.
http://reviews.llvm.org/D16823
llvm-svn: 259716
diff --git a/clang/lib/CodeGen/CodeGenModule.h b/clang/lib/CodeGen/CodeGenModule.h
index 00119c3..f8084ef 100644
--- a/clang/lib/CodeGen/CodeGenModule.h
+++ b/clang/lib/CodeGen/CodeGenModule.h
@@ -1128,6 +1128,9 @@
/// Create a bitset entry for the given function and add it to BitsetsMD.
void CreateFunctionBitSetEntry(const FunctionDecl *FD, llvm::Function *F);
+ /// Returns whether this module needs the "all-vtables" bitset.
+ bool NeedAllVtablesBitSet() const;
+
/// Create a bitset entry for the given vtable and add it to BitsetsMD.
void CreateVTableBitSetEntry(llvm::NamedMDNode *BitsetsMD,
llvm::GlobalVariable *VTable, CharUnits Offset,