1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/IR/DiagnosticHandler.cpp b/llvm/lib/IR/DiagnosticHandler.cpp
index 2fe634803894..7b40728a34e8 100644
--- a/llvm/lib/IR/DiagnosticHandler.cpp
+++ b/llvm/lib/IR/DiagnosticHandler.cpp
@@ -30,7 +30,7 @@ struct PassRemarksOpt {
       Pattern = std::make_shared<Regex>(Val);
       std::string RegexError;
       if (!Pattern->isValid(RegexError))
-        report_fatal_error("Invalid regular expression '" + Val +
+        report_fatal_error(Twine("Invalid regular expression '") + Val +
                                "' in -pass-remarks: " + RegexError,
                            false);
     }