[clang] [clang] do not abort on u8 string in inline asm (PR #177096)

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@@ -0,0 +1,7 @@
+// RUN: not %clang_cc1 -fsyntax-only -verify %s
+
+void foo() {
+  asm("" ::: (u8""}));
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Sirraide wrote:

Also, what happens if someone writes e.g. `asm(u"")`? Do we diagnose that as well?

https://github.com/llvm/llvm-project/pull/177096