Apple-2gs-SW/hush
1
0
Fork 0
mirror of https://github.com/sheumann/hush.git synced 2024-06-28 14:29:51 +00:00
Code Issues Projects Releases Wiki Activity

Patch from David Updegraff to use calloc so that forward pointers start out

Browse Source 
NULL, and so it can handle format strings that have stuff _after_ the last %?
specification
This commit is contained in:
Eric Andersen 2003-04-19 23:18:35 +00:00
parent 2894266f12
commit 4a11e0fb45
1 changed files with 29 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
libbb/dump.c
View File

@ -96,7 +96,7 @@ static void rewrite(FS * fs)
enum { NOTOKAY, USEBCNT, USEPREC } sokay;
register PR *pr, **nextpr = NULL;
register FU *fu;
register char *p1, *p2;
register char *p1, *p2, *p3;
char savech, *fmtp;
const char *byte_count_str;
int nconv, prec = 0;
@ -108,11 +108,13 @@ static void rewrite(FS * fs)
*/
for (nconv = 0, fmtp = fu->fmt; *fmtp; nextpr = &pr->nextpr) {
/* NOSTRICT */
pr = (PR *) xmalloc(sizeof(PR));
/* DBU:[dvae@cray.com] calloc so that forward ptrs start out NULL*/
pr = (PR *) xcalloc(1,sizeof(PR));
if (!fu->nextpr)
fu->nextpr = pr;
else
*nextpr = pr;
/* ignore nextpr -- its unused inside the loop and is
* uninitialized 1st time thru.
*/
/* bb_dump_skip preceding text and up to the next % sign */
for (p1 = fmtp; *p1 && *p1 != '%'; ++p1);
@ -244,6 +246,24 @@ static void rewrite(FS * fs)
pr->fmt = bb_xstrdup(fmtp);
*p2 = savech;
pr->cchar = pr->fmt + (p1 - fmtp);
/* DBU:[dave@cray.com] w/o this, trailing fmt text, space is lost.
* Skip subsequent text and up to the next % sign and tack the
* additional text onto fmt: eg. if fmt is "%x is a HEX number",
* we lose the " is a HEX number" part of fmt.
*/
for (p3 = p2; *p3 && *p3 != '%'; p3++);
if (p3 > p2)
{
savech = *p3;
*p3 = '\0';
if (!(pr->fmt = realloc(pr->fmt, strlen(pr->fmt)+(p3-p2)+1)))
perror_msg_and_die("hexdump");
strcat(pr->fmt, p2);
*p3 = savech;
p2 = p3;
}
fmtp = p2;
/* only one conversion character if byte count */
@ -346,12 +366,13 @@ static int next(char **argv)
static u_char *get(void)
{
static int ateof = 1;
static u_char *curp, *savp;
static u_char *curp=NULL, *savp; /*DBU:[dave@cray.com]initialize curp */
register int n;
int need, nread;
u_char *tmpp;
if (!curp) {
address = (off_t)0; /*DBU:[dave@cray.com] initialize,initialize..*/
curp = (u_char *) xmalloc(bb_dump_blocksize);
savp = (u_char *) xmalloc(bb_dump_blocksize);
} else {
@ -673,7 +694,7 @@ void bb_dump_add(const char *fmt)
/* start new linked list of format units */
/* NOSTRICT */
tfs = (FS *) xmalloc(sizeof(FS));
tfs = (FS *) xcalloc(1,sizeof(FS)); /*DBU:[dave@cray.com] start out NULL */
if (!bb_dump_fshead) {
bb_dump_fshead = tfs;
} else {
@ -692,7 +713,8 @@ void bb_dump_add(const char *fmt)
/* allocate a new format unit and link it in */
/* NOSTRICT */
tfu = (FU *) xmalloc(sizeof(FU));
/* DBU:[dave@cray.com] calloc so that forward pointers start out NULL */
tfu = (FU *) xcalloc(1,sizeof(FU));
*nextfu = tfu;
nextfu = &tfu->nextfu;
tfu->reps = 1;