[clang] [clang-tools-extra] [clang][analyzer] Add ReportInC99AndEarlier option to DeprecatedOrUnsafeBuf… (PR #168704)

[Balázs Benics via cfe-commits]

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@@ -1113,5 +1141,32 @@ REGISTER_CHECKER(rand)
 REGISTER_CHECKER(vfork)
 REGISTER_CHECKER(FloatLoopCounter)
 REGISTER_CHECKER(UncheckedReturn)
-REGISTER_CHECKER(DeprecatedOrUnsafeBufferHandling)
+
+void ento::registerDeprecatedOrUnsafeBufferHandling(CheckerManager &Mgr) {
+  SecuritySyntaxChecker *Checker = Mgr.getChecker<SecuritySyntaxChecker>();
+  Checker->filter.check_DeprecatedOrUnsafeBufferHandling = true;
+  Checker->filter.checkName_DeprecatedOrUnsafeBufferHandling =
+      Mgr.getCurrentCheckerName();
+
+  // Parse ReportMode option (defaults to C11Only for backward compatibility)
+  StringRef ReportModeStr = Mgr.getAnalyzerOptions().getCheckerStringOption(
+      Mgr.getCurrentCheckerName(), "ReportMode");
+  if (ReportModeStr == "all")
+    Checker->filter.ReportMode = ReportPolicy::All;
+  else if (ReportModeStr == "actionable")
+    Checker->filter.ReportMode = ReportPolicy::Actionable;
+  else if (ReportModeStr == "c11-only")
+    Checker->filter.ReportMode = ReportPolicy::C11Only;
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steakhal wrote:

This reminded me of `llvm::SwtringSwitch`

https://github.com/llvm/llvm-project/pull/168704