[clang] [clang-repl] Emit const variables only once (PR #65257)

[Jonas Hahnfeld via cfe-commits]

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@@ -0,0 +1,29 @@
+// UNSUPPORTED: system-aix
+// RUN: cat %s | clang-repl | FileCheck %s
+// RUN: cat %s | clang-repl -Xcc -O2 | FileCheck %s
+
+extern "C" int printf(const char*, ...);
+
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hahnjo wrote:

`const A a(1);` is a file-scope constant, no? We don't need it for C because the special case in `LinkageComputer::getLVForNamespaceScopeDecl` only applies to C++ (my understanding is that `const` variables always have an identity in C).

https://github.com/llvm/llvm-project/pull/65257