+arg-nonnull
+extensions
+alloca [test -n "$FNMATCH_H"]
+stdbool [test -n "$FNMATCH_H"]
+wchar [test -n "$FNMATCH_H"]
+wctype-h [test -n "$FNMATCH_H"]
+memchr [test -n "$FNMATCH_H"]
+memcmp [test -n "$FNMATCH_H"]
+mbsrtowcs [test -n "$FNMATCH_H"]
+mbsinit [test -n "$FNMATCH_H"]