[clang] [libc] [llvm] [libc] Implement (v|f)printf on the GPU (PR #96369)

[Michael Jones via cfe-commits]

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@@ -54,7 +54,8 @@ class MockArgList {
   }
 
   template <class T> LIBC_INLINE T next_var() {
-    ++arg_counter;
+    arg_counter =
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michaelrj-google wrote:

I don't think anything directly depends on its output, but also the comments on it specifically say that it's for testing. Given how small `ArgList` is I'd rather have another copy than run into problems because a patch in the future didn't expect the testing version to be used in real code.

https://github.com/llvm/llvm-project/pull/96369