================ @@ -34,3 +34,7 @@ LLVM_LIBC_FUNCTION(int, fscanf, } } // namespace LIBC_NAMESPACE_DECL + +#ifdef LIBC_CONF_SCANF_PROVIDE_ISOC99_ALIASES +LLVM_LIBC_ADD_FUNCTION_C_ALIAS(fscanf, __isoc99_fscanf); ---------------- lntue wrote: Done. https://github.com/llvm/llvm-project/pull/213125