diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | Src/exec.c | 8 |
2 files changed, 10 insertions, 3 deletions
@@ -1,3 +1,8 @@ +2018-07-10 Peter Stephenson <p.stephenson@samsung.com> + + * 43156, 43157: Src/exec.c: need to allow for possible + update of pointer by two in gethere(). + 2018-07-09 Peter Stephenson <p.stephenson@samsung.com> * users/23531: Src/exec.c, Test/C03traps.ztst: Fix error diff --git a/Src/exec.c b/Src/exec.c index 586402070..615a5086f 100644 --- a/Src/exec.c +++ b/Src/exec.c @@ -4418,7 +4418,9 @@ gethere(char **strp, int typ) while ((c = hgetc()) == '\t' && strip) ; for (;;) { - if (bptr == buf + bsiz) { + if (bptr >= buf + bsiz - 2) { + ptrdiff_t toff = t - buf; + ptrdiff_t bptroff = bptr - buf; char *newbuf = realloc(buf, 2 * bsiz); if (!newbuf) { /* out of memory */ @@ -4426,8 +4428,8 @@ gethere(char **strp, int typ) return NULL; } buf = newbuf; - t = buf + bsiz - (bptr - t); - bptr = buf + bsiz; + t = buf + toff; + bptr = buf + bptroff; bsiz *= 2; } if (lexstop || c == '\n') |