[clang] [Clang] Fix incorrect handling of #pragma {GCC} unroll N in dependent context (PR #90240)

[Erich Keane via cfe-commits]

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@@ -124,3 +124,40 @@ void test(int *List, int Length) {
 
 #pragma unroll
 /* expected-error {{expected statement}} */ }
+
+using size_t = unsigned long long;
+
+template <bool Flag>
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erichkeane wrote:

This test isn't particularly good, since it is validating that it 'parses', but that isn't our concern.  Please extract this to an AST test, and perhaps a codegen test.

https://github.com/llvm/llvm-project/pull/90240