[lldb] [llvm] [llvm][lldb] Add check for incorrect target features (PR #180901)

[David Spickett via llvm-commits]

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@@ -452,7 +477,9 @@ class Target {
                                          StringRef Features) const {
     if (!MCSubtargetInfoCtorFn)
       return nullptr;
-    return MCSubtargetInfoCtorFn(TheTriple, CPU, Features);
+    if (!isSignedFeatureList(Features))
+      return nullptr;
+    return MCSubtargetInfoCtorFn(Triple(TheTriple), CPU, Features);
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DavidSpickett wrote:

Why the extra cast? TheTriple is already a Triple&.

https://github.com/llvm/llvm-project/pull/180901