CC-tea/coreutils
1
0
Fork 0
mirror of git://git.sv.gnu.org/coreutils.git synced 2026-04-21 11:16:16 +02:00
Code Issues Projects Releases Wiki Activity

(cat): Don't advance the write pointer past the end of the write buffer.

Browse Source
This commit is contained in:
Jim Meyering
2002-10-08 06:21:31 +00:00
parent 7a58f340c1
commit 5f4fb36645
1 changed files with 5 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/cat.c
View File

@@ -265,19 +265,21 @@ cat (
if (outbuf + outsize <= bpout) if (outbuf + outsize <= bpout)
{ {
char *wp = outbuf; char *wp = outbuf;
size_t remaining_bytes;
do do
{ {
if (full_write (STDOUT_FILENO, wp, outsize) != outsize) if (full_write (STDOUT_FILENO, wp, outsize) != outsize)
error (EXIT_FAILURE, errno, _("write error")); error (EXIT_FAILURE, errno, _("write error"));
wp += outsize; wp += outsize;
remaining_bytes = bpout - wp;
} }
while (wp + outsize <= bpout); while (outsize <= remaining_bytes);
/* Move the remaining bytes to the beginning of the /* Move the remaining bytes to the beginning of the
buffer. */ buffer. */
memmove (outbuf, wp, bpout - wp); memmove (outbuf, wp, remaining_bytes);
bpout = outbuf + (bpout - wp); bpout = outbuf + remaining_bytes;
} }
/* Is INBUF empty? */ /* Is INBUF empty? */