[libc-commits] [libc] [libc] Fix erroenous warning on GCC (PR #101520)

[via libc-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libc

Author: Joseph Huber (jhuber6)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/101520.diff


1 Files Affected:

- (modified) libc/src/stdio/printf_core/writer.h (+1) 


``````````diff
diff --git a/libc/src/stdio/printf_core/writer.h b/libc/src/stdio/printf_core/writer.h
index 7dfdea2c5bc40..5526a478ea620 100644
--- a/libc/src/stdio/printf_core/writer.h
+++ b/libc/src/stdio/printf_core/writer.h
@@ -100,6 +100,7 @@ struct WriteBuffer {
     case WriteMode::RESIZE_AND_FILL_BUFF:
       return resize_and_write(new_str);
     }
+    __builtin_unreachable();
   }
 };
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/101520