build system: -fno-builtin-printf

Benefits are: drops reference to out-of-line putchar(), fixes a few cases
of failed string merge.

function                                             old     new   delta
i2cdump_main                                        1488    1502     +14
sha256_process_block64                               423     433     +10
sendmail_main                                       1183    1185      +2
list_table                                          1114    1116      +2
i2cdetect_main                                      1235    1237      +2
fdisk_main                                          2852    2854      +2
builtin_type                                         119     121      +2
unicode_conv_to_printable2                           325     324      -1
scan_recursive                                       380     378      -2
mkfs_minix_main                                     2687    2684      -3
buffer_fill_and_print                                178     169      -9
putchar                                              152       -    -152
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 7/4 up/down: 34/-167)          Total: -133 bytes
   text    data     bss     dec     hex filename
 937788     932   17676  956396   e97ec busybox_old
 937564     932   17676  956172   e970c busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/printutils/lpd.c b/printutils/lpd.c
index eaf42c08b..c98bbb347 100644
--- a/printutils/lpd.c
+++ b/printutils/lpd.c
@@ -200,7 +200,7 @@ int lpd_main(int argc UNUSED_PARAM, char *argv[])
                 if (2 != s[0] && 3 != s[0])
                         goto unsupported_cmd;
                 if (spooling & (1 << (s[0]-1))) {
-                        printf("Duplicated subcommand\n");
+                        puts("Duplicated subcommand");
                         goto err_exit;
                 }
                 // get filename
@@ -208,7 +208,7 @@ int lpd_main(int argc UNUSED_PARAM, char *argv[])
                 fname = strchr(s, ' ');
                 if (!fname) {
 // bad_fname:
-                        printf("No or bad filename\n");
+                        puts("No or bad filename");
                         goto err_exit;
                 }
                 *fname++ = '\0';
@@ -219,13 +219,13 @@ int lpd_main(int argc UNUSED_PARAM, char *argv[])
                 // get length
                 expected_len = bb_strtou(s + 1, NULL, 10);
                 if (errno || expected_len < 0) {
-                        printf("Bad length\n");
+                        puts("Bad length");
                         goto err_exit;
                 }
                 if (2 == s[0] && expected_len > 16 * 1024) {
                         // SECURITY:
                         // ctrlfile can't be big (we want to read it back later!)
-                        printf("File is too big\n");
+                        puts("File is too big");
                         goto err_exit;
                 }