1 files changed, 13 insertions, 0 deletions
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index eaa61b29d9d..220cad2738b 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2938,6 +2938,19 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
   case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
   }
 
+  if (Arg *A = Args.getLastArg(OPT_ftrivial_auto_var_init)) {
+    StringRef Val = A->getValue();
+    if (Val == "uninitialized")
+      Opts.setTrivialAutoVarInit(
+          LangOptions::TrivialAutoVarInitKind::Uninitialized);
+    else if (Val == "zero")
+      Opts.setTrivialAutoVarInit(LangOptions::TrivialAutoVarInitKind::Zero);
+    else if (Val == "pattern")
+      Opts.setTrivialAutoVarInit(LangOptions::TrivialAutoVarInitKind::Pattern);
+    else
+      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
+  }
+
   // Parse -fsanitize= arguments.
   parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
                       Diags, Opts.Sanitize);