================
@@ -0,0 +1,28 @@
+// RUN: %clang_cc1 -std=c++11 -fsyntax-only -fcxx-exceptions -verify %s
+
+#if !__has_builtin(__builtin_verbose_trap)
+#error
+#endif
+
+constexpr char const* constMsg1 = "hello";
+char const* const constMsg2 = "hello";
+char const constMsg3[] = "hello";
+
+template <const char * const str>
+void f(const char * arg) {
+  __builtin_verbose_trap("Argument_must_not_be_null");
----------------
ahatanak wrote:

This patch doesn't add any artificial limit on the string length, but I meant 
that there's probably a limit on the length of string literals the compiler can 
handle, which is determined by the implementation. I don't know the exact 
limit, but it's a lot larger than 256 and 512.

https://github.com/llvm/llvm-project/pull/79230
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