[clang] [clang] Fix an out-of-bound crash when checking template partial specializations. (PR #86794)

[Haojian Wu via cfe-commits]

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@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -verify %s
+// RUN: %clang_cc1 -std=c++20 -ferror-limit 0 -verify %s
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hokein wrote:

This file contains many errors, the number of the errors exceeds the default number (19) in clang, which affects the clang behavior (clang will stop parsing when it reaches the error limit). 

https://github.com/llvm/llvm-project/pull/86794