[clang] [LifetimeSafety] Track STL algorithm functions that return lifetimebound iterators (PR #179227)

[Utkarsh Saxena via cfe-commits]

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@@ -174,13 +174,41 @@ bool shouldTrackImplicitObjectArg(const CXXMethodDecl *Callee,
 }
 
 bool shouldTrackFirstArgument(const FunctionDecl *FD) {
-  if (!FD->getIdentifier() || FD->getNumParams() != 1)
+  if (!FD->getIdentifier() || FD->getNumParams() < 1)
     return false;
+  if (!FD->isInStdNamespace())
+    return false;
+  // Track std:: algorithm functions that return an iterator whose lifetime is
+  // bound to the first argument.
+  if (FD->getNumParams() >= 2 && FD->isInStdNamespace() &&
+      isGslPointerType(FD->getReturnType())) {
+    if (llvm::StringSwitch<bool>(FD->getName())
+            .Cases(
+                {
+                    "find",
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usx95 wrote:

As much as we can I guess. I can add more in follow ups. Feel free to suggest more.

https://github.com/llvm/llvm-project/pull/179227