[clang] [clang] Add fix for GH issue 83050 (PR #83071)

[Nick Desaulniers via cfe-commits]

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@@ -0,0 +1,11 @@
+/// This is the regression test for https://github.com/llvm/llvm-project/issues/83050.
+/// This just needs to compile.
+// RUN: %clang_cc1 -x c++ -ffixed-point -S %s -o /dev/null -triple=x86_64-linux -ffixed-point
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nickdesaulniers wrote:

Consider making this an `-fsyntax-only` test then since we don't care about codegen.

https://github.com/llvm/llvm-project/pull/83071