gentoo-overlay/dev-scheme/c-wrapper/files/c-wrapper-glibc-2.25.patch

--- a/lib/c-wrapper/c-parser.scm
+++ b/lib/c-wrapper/c-parser.scm
@@ -1115,7 +1115,9 @@
                 (raise e))))
      (call-with-gcc-io include-dirs headers options
                        (lambda (in out)
-                         (let ((macro-list (queue->list (macro-queue))))
+                         (let ((macro-list (filter (lambda (m)
+                                                     (not (string-prefix?  "__glibc_macro_warning" (car m))))
+                                                   (queue->list (macro-queue)))))
                            (for-each (lambda (macro-def)
                                        (display (car macro-def) out)
                                        (newline out))