diff options
Diffstat (limited to 'Src/exec.c')
| -rw-r--r-- | Src/exec.c | 8 |
1 files changed, 5 insertions, 3 deletions
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') |