U32_TO_U           44 maint/gnulib/tests/unistr/test-chr.h   input = U32_TO_U (input32, size, NULL, &length);
U32_TO_U           45 maint/gnulib/tests/unistr/test-strchr.h   input = U32_TO_U (input32, size + 1, NULL, &length);