================
@@ -111,10 +118,16 @@ class CrossProcessModuleCache : public ModuleCache {
 
   std::unique_ptr<llvm::AdvisoryLock>
   getLock(StringRef ModuleFilename) override {
+    // This is a compiler-internal input/output, let's bypass the sandbox.
+    auto BypassSandbox = llvm::sys::sandbox::scopedDisable();
----------------
benlangmuir wrote:

What's the rationale for the constructor needing you to disable the sandbox but 
not the destructor or lock calls, which all involve I/O?  We don't support lock 
files in the VFS in general, so maybe we should just do this in the constructor 
for lock files as well?

https://github.com/llvm/llvm-project/pull/165350
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