TEST_NARROW
TEST_NARROW(fwide(f, -1));
TEST_NARROW(getc(f));
TEST_NARROW(getc_unlocked(f));
TEST_NARROW(fgetc(f));
TEST_NARROW(c = fgetc(f); ungetc(c, f));
TEST_NARROW(fgets(buffer, BUFSIZ, f));
TEST_NARROW(fscanf(f, "%s\n", buffer));
TEST_NARROW(putc('c', f));
TEST_NARROW(putc_unlocked('c', f));
TEST_NARROW(fputc('c', f));
TEST_NARROW(fputs("foo", f));
TEST_NARROW(fprintf(f, "%s\n", "foo"));
TEST_NARROW(fread(buffer, 4, BUFSIZ / 4, f));
TEST_NARROW(fwrite(buffer, 4, BUFSIZ / 4, f));
TEST_NARROW(getw(f));
TEST_NARROW(putw(1234, f));