[llvm-branch-commits] [clang] [clang] Implement instantiation context note for checking template parameters (PR #126088)

[Vlad Serebrennikov via llvm-branch-commits]

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@@ -83,6 +83,7 @@ namespace cwg603 { // cwg603: 3.1
   typedef S<'\001'> S1;
   typedef S<(1ul << __CHAR_BIT__) + 1> S1;
   // since-cxx11-error at -1 {{non-type template argument evaluates to 257, which cannot be narrowed to type 'unsigned char'}}
+  //   since-cxx11-note at -4 {{template parameter is declared here}}
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Endilll wrote:

Use a label instead of `-4`, readers shouldn't have to count lines to understand which line the note is emitted for.

https://github.com/llvm/llvm-project/pull/126088