Adjust in response to jan.h.d's comments.

See, for example <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9196#26>.

1 files changed, 3 insertions, 6 deletions

diff --git a/src/termcap.c b/src/termcap.c
index 791c593c06f..6f24817fa72 100644
--- a/src/termcap.c
+++ b/src/termcap.c
@@ -637,13 +637,10 @@ gobble_line (int fd, register struct termcap_buffer *bufp, char *append_end)
             {
               ptrdiff_t ptr_offset = bufp->ptr - buf;
               ptrdiff_t append_end_offset = append_end - buf;
-              ptrdiff_t size;
-              if ((min (PTRDIFF_MAX, SIZE_MAX) - 1) / 2 < bufp->size)
-                memory_full (SIZE_MAX);
-              size = 2 * bufp->size;
               /* Add 1 to size to ensure room for terminating null.  */
-              bufp->beg = buf = (char *) xrealloc (buf, size + 1);
-              bufp->size = size;
+              ptrdiff_t size = bufp->size + 1;
+              bufp->beg = buf = xpalloc (buf, &size, 1, -1, 1);
+              bufp->size = size - 1;
               bufp->ptr = buf + ptr_offset;
               append_end = buf + append_end_offset;
             }