[clang] [clang] Instantiate attributes on LabelDecls (PR #115924)

[Erich Keane via cfe-commits]

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@@ -1,4 +1,64 @@
-// RUN: %clang_cc1 -std=gnu++20 -fsyntax-only -verify %s
+// RUN: split-file %s %t
+// RUN: %clang_cc1 -std=gnu++20 -fsyntax-only -ast-dump -verify %t/good_annotate.cpp | FileCheck %s
+// RUN: %clang_cc1 -std=gnu++20 -fsyntax-only -verify %t/bad_annotate.cpp
+//--- good_annotate.cpp
+// expected-no-diagnostics
+
+void f() {
+  [[clang::annotate("decl", 1)]] int i = 0;
+  [[clang::annotate("stmt", 2)]] i += 1;
+[[clang::annotate("label", 3)]] label1:
+  i += 2;
+}
+
+// CHECK: -FunctionDecl 0x{{[0-9a-z]+}} {{.*:[0-9]+:[0-9]+, line:[0-9]+:[0-9]+> line:[0-9]+:[0-9]+}} f 'void ()'
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erichkeane wrote:

Your check lines are WAAAAY overkill here :)  

Just do:
`FunctionDecl {{.*}} f 'void ()'`

No need to separately check the contents of the pointer and the line/columns.  

https://github.com/llvm/llvm-project/pull/115924