Snippets for alpine 2.29.99 from Nix x86_64-linux

Sourced from https://hydra.nixos.org/log/n0gfwxw837d7jbwb11m1d9d0x8f6mql2-alpine-2.29.99.drv.

env_unix.c:823:44: warning: ignoring return value of 'chdir' declared with attribute 'warn_unused_result' [-Wunused-result]
  823 |              (ret = env_init (user,home))) chdir (myhomedir ());
      |                                            ^~~~~~~~~~~~~~~~~~~~

dummy.c:384:7: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  384 |       read (fd,buf+ssiz,bsiz = min (fsiz,BUFSIZE));
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

fdstring.c:97:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |     read ((long) s->data,s->curpos,(size_t) s->cursize);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

fdstring.c:67:3: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
   67 |   read (d->fd,s->chunk,(size_t) s->cursize);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

nntp.c:786:5: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result]
  786 |     fread (LOCAL->over_fmt = (char *) fs_get ((size_t) k + 3),
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  787 |            (size_t) 1,(size_t) k,f);
      |            ~~~~~~~~~~~~~~~~~~~~~~~~

nntp.c:1122:9: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result]
 1122 |         fread (elt->private.msg.header.text.data =
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1123 |                (unsigned char *) fs_get ((size_t) *size + 3),
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1124 |                (size_t) 1,(size_t) *size,f);
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

pop3.c:894:7: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result]
  894 |       fread (elt->private.msg.header.text.data = (unsigned char *)
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  895 |              fs_get ((size_t) elt->private.msg.header.text.size + 1),
      |              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  896 |              (size_t) 1,(size_t) elt->private.msg.header.text.size,f);
      |              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:523:7: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
  523 |       ftruncate (fd,i);         /* make sure tied off */
      |       ^~~~~~~~~~~~~~~~

unix.c:621:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  621 |     read (LOCAL->fd,LOCAL->buf,elt->private.msg.header.text.size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:631:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  631 |     read (LOCAL->fd,s = (char *) fs_get (elt->private.msg.header.text.size+1),
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  632 |           elt->private.msg.header.text.size);
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:698:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  698 |     read (LOCAL->fd,LOCAL->buf,elt->private.msg.text.text.size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:947:7: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  947 |       read (LOCAL->fd,LOCAL->buf,elt->private.special.text.size);
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:973:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
  973 |     ftruncate (fd,sbuf.st_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:1143:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1143 |     ftruncate (fd,sbuf.st_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:2130:11: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
 2130 |           read (LOCAL->fd,LOCAL->buf,elt->private.special.text.size);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:2230:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2230 |     ftruncate (LOCAL->fd,LOCAL->filesize = size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:2276:9: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2276 |         ftruncate (LOCAL->fd,LOCAL->filesize);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:2602:9: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
 2602 |         read (sfd,s = (char *) fs_get (size + 1),size);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:2612:11: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2612 |           ftruncate (LOCAL->fd,LOCAL->filesize);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:2620:11: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2620 |           ftruncate (LOCAL->fd,LOCAL->filesize);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

unix.c:2631:11: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2631 |           ftruncate (sfd,0);    /* truncate sysinbox to zero bytes */
      |           ^~~~~~~~~~~~~~~~~

mbx.c:712:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  712 |     read (LOCAL->fd,s = LOCAL->buf,*length);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mbx.c:968:9: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
  968 |         ftruncate (LOCAL->fd,sbuf.st_size);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mbx.c:1049:11: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
 1049 |           read (LOCAL->fd,LOCAL->buf,j);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mbx.c:1063:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1063 |     ftruncate (fd,sbuf.st_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~

mbx.c:1198:7: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1198 |       ftruncate (fd,sbuf.st_size);
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~

mbx.c:1272:3: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
 1272 |   read (LOCAL->fd,LOCAL->buf,HDRSIZE);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mbx.c:1765:13: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
 1765 |             read (LOCAL->fd,LOCAL->buf,m);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mbx.c:1789:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1789 |     ftruncate (LOCAL->fd,LOCAL->filesize);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mmdf.c:662:7: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
  662 |       ftruncate (fd,i);         /* make sure tied off */
      |       ^~~~~~~~~~~~~~~~

mmdf.c:773:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  773 |     read (LOCAL->fd,LOCAL->buf,elt->private.msg.header.text.size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mmdf.c:783:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  783 |     read (LOCAL->fd,s = (char *) fs_get (elt->private.msg.header.text.size+1),
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  784 |           elt->private.msg.header.text.size);
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mmdf.c:850:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  850 |     read (LOCAL->fd,LOCAL->buf,elt->private.msg.text.text.size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mmdf.c:1095:7: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
 1095 |       read (LOCAL->fd,LOCAL->buf,elt->private.special.text.size);
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mmdf.c:1122:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1122 |     ftruncate (fd,sbuf.st_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~

mmdf.c:1292:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1292 |     ftruncate (fd,sbuf.st_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~

mmdf.c:2306:11: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
 2306 |           read (LOCAL->fd,LOCAL->buf,elt->private.special.text.size);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mmdf.c:2389:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2389 |     ftruncate (LOCAL->fd,LOCAL->filesize = size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mmdf.c:2435:9: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2435 |         ftruncate (LOCAL->fd,LOCAL->filesize);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tenex.c:522:11: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  522 |           read (LOCAL->fd,LOCAL->buf,elt->private.msg.full.text.size);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tenex.c:573:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  573 |     read (LOCAL->fd,LOCAL->buf,*length = i);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tenex.c:578:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  578 |     read (LOCAL->fd,s,i);       /* slurp the data */
      |     ^~~~~~~~~~~~~~~~~~~~

tenex.c:620:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  620 |     read (LOCAL->fd,LOCAL->buf,i);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tenex.c:635:7: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  635 |       read (LOCAL->fd,s,i);     /* slurp the data */
      |       ^~~~~~~~~~~~~~~~~~~~

tenex.c:805:9: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
  805 |         ftruncate (LOCAL->fd,sbuf.st_size);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tenex.c:896:13: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  896 |             read (LOCAL->fd,LOCAL->buf,m);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tenex.c:923:9: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
  923 |         ftruncate (LOCAL->fd,LOCAL->filesize);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tenex.c:1014:9: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
 1014 |         read (LOCAL->fd,LOCAL->buf,j);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tenex.c:1022:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1022 |     ftruncate (fd,sbuf.st_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~

tenex.c:1156:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1156 |     ftruncate (fd,sbuf.st_size);/* revert file */
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~

tenex.c:1462:9: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
 1462 |         read (LOCAL->fd,s = LOCAL->buf,i = min (msiz-siz,(long) MAILTMPLEN));
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mtx.c:519:3: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  519 |   read (LOCAL->fd,LOCAL->buf,*length);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mtx.c:714:9: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
  714 |         ftruncate (LOCAL->fd,sbuf.st_size);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mtx.c:805:13: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  805 |             read (LOCAL->fd,LOCAL->buf,m);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mtx.c:831:9: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
  831 |         ftruncate (LOCAL->fd,LOCAL->filesize);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mtx.c:922:9: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  922 |         read (LOCAL->fd,LOCAL->buf,j);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mtx.c:930:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
  930 |     ftruncate (fd,sbuf.st_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~

mtx.c:1057:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1057 |     ftruncate (fd,sbuf.st_size);/* revert file */
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~

news.c:164:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  164 |     read (fd,t = s = (char *) fs_get (sbuf.st_size+1),sbuf.st_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

news.c:231:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  231 |     read (fd,s = (char *) fs_get (sbuf.st_size + 1),sbuf.st_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

phile.c:320:3: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  320 |   read (fd,buf->data = (unsigned char *) fs_get (buf->size + 1),buf->size);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mh.c:251:7: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  251 |       read (fd,(t = (char *) fs_get (sbuf.st_size + 1)),sbuf.st_size);
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mx.c:639:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
  639 |     read (fd,LOCAL->buf,elt->rfc822_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mx.c:1180:5: warning: ignoring return value of 'read' declared with attribute 'warn_unused_result' [-Wunused-result]
 1180 |     read (LOCAL->fd,s = idx = (char *) fs_get (sbuf.st_size + 1),sbuf.st_size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mx.c:1272:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1272 |     ftruncate (LOCAL->fd,size);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~

mix.c:1485:9: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1485 |         ftruncate (fd,size);    /* revert file */
      |         ^~~~~~~~~~~~~~~~~~~

mix.c:1603:11: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1603 |           ftruncate (fd,size);  /* revert all writes to file*/
      |           ^~~~~~~~~~~~~~~~~~~

mix.c:2226:5: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2226 |     ftruncate (LOCAL->mfd,i);   /* and tie off at that point */
      |     ^~~~~~~~~~~~~~~~~~~~~~~~

mix.c:2274:11: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2274 |           ftruncate (fileno (idxf),sbuf.st_size);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mix.c:2307:16: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2307 |       if (ret) ftruncate (fileno (idxf),ftell (idxf));
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mix.c:2355:11: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2355 |           ftruncate (fileno (statf),sbuf.st_size);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mix.c:2389:16: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2389 |       if (ret) ftruncate (fileno (statf),ftell (statf));
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

mix.c:2733:16: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 2733 |       if (ret) ftruncate (fileno (f),ftell (f));
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

pipe.c:319:13: warning: ignoring return value of 'pipe' declared with attribute 'warn_unused_result' [-Wunused-result]
  319 |             pipe(p);                            /* alloc pipe to write child */
      |             ^~~~~~~

pipe.c:325:13: warning: ignoring return value of 'pipe' declared with attribute 'warn_unused_result' [-Wunused-result]
  325 |             pipe(p);                            /* alloc pipe to read child */
      |             ^~~~~~~

filter.c:7776:21: warning: ignoring return value of 'getcwd' declared with attribute 'warn_unused_result' [-Wunused-result]
 7776 |                     getcwd(p = buf, sizeof(buf));
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

pattern.c:996:31: warning: ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]
  996 |                         (void)fgets(buf, BUF_SIZE, fp);
      |                               ^~~~~~~~~~~~~~~~~~~~~~~~

smime.c:768:20: warning: ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]
  768 |                    fgets(tmp2, sizeof(tmp2), fp);
      |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

filesys.c:1016:26: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1016 |                   (void) ftruncate(fileno(g_pico_fio.fp), (off_t) fsbuf.st_size);
      |                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

shell.c:104:9: warning: ignoring return value of 'system' declared with attribute 'warn_unused_result' [-Wunused-result]
  104 |         system((shell = (char *)getenv("SHELL")) ? shell : "/bin/csh");
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

browse.c:2822:7: warning: ignoring return value of 'chdir' declared with attribute 'warn_unused_result' [-Wunused-result]
 2822 |       chdir(mp->dname);
      |       ^~~~~~~~~~~~~~~~

file.c:272:31: warning: '__builtin___strncat_chk' specified bound depends on the length of the source argument [-Wstringop-overflow=]
  272 |                               strncat(infile, fname, len+1-1-strlen(infile));
      |                               ^

imap.c:2328:13: warning: ignoring return value of 'system' declared with attribute 'warn_unused_result' [-Wunused-result]
 2328 |             system("csh");
      |             ^~~~~~~~~~~~~

imap.c:3674:5: warning: ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]
 3674 |     fgets(tmp2, sizeof(tmp2), fp);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

imap.c:4025:9: warning: '__builtin_strncat' specified bound depends on the length of the source argument [-Wstringop-overflow=]
 4025 |         strncat(text, tmp, strlen(tmp));
      |         ^

mailpart.c:1557:11: warning: ignoring return value of 'ftruncate' declared with attribute 'warn_unused_result' [-Wunused-result]
 1557 |           ftruncate(fileno((FILE *)store->txt), (off_t) start_of_append);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~