Patch 8.2.1843

[Bram Moolenaar]

Patch 8.2.1843
Problem: Netbeans: with huge buffer number memory allocation may fail.
Solution: Check for size overflow.
Files: src/netbeans.c


*** ../vim-8.2.1842/src/netbeans.c 2020-04-19 14:02:22.427687032 +0200
--- src/netbeans.c 2020-10-13 21:09:55.880051169 +0200
***************
*** 674,684 ****
{
if (bufno >= buf_list_size) // grow list
{
! nbbuf_T *t_buf_list = buf_list;

incr = bufno - buf_list_size + 90;
buf_list_size += incr;
! buf_list = vim_realloc(buf_list, buf_list_size * sizeof(nbbuf_T));
if (buf_list == NULL)
{
vim_free(t_buf_list);
--- 674,692 ----
{
if (bufno >= buf_list_size) // grow list
{
! nbbuf_T *t_buf_list = buf_list;
! size_t bufsize;

incr = bufno - buf_list_size + 90;
buf_list_size += incr;
! bufsize = buf_list_size * sizeof(nbbuf_T);
! if (bufsize == 0 || bufsize / sizeof(nbbuf_T)
! != (size_t)buf_list_size)
! {
! // list size overflow, bail out
! return NULL;
! }
! buf_list = vim_realloc(buf_list, bufsize);
if (buf_list == NULL)
{
vim_free(t_buf_list);
*** ../vim-8.2.1842/src/version.c 2020-10-13 19:08:20.271560493 +0200
--- src/version.c 2020-10-13 21:08:32.992320734 +0200
***************
*** 752,753 ****
--- 752,755 ----
{ /* Add new patch number below this line */
+ /**/
+ 1843,
/**/

--
hundred-and-one symptoms of being an internet addict:
85. Choice between paying Compuserve bill and paying for kids education
is a no brainer -- although a bit painful for your kids.

/// Bram Moolenaar -- Br...@Moolenaar.net -- http://www.Moolenaar.net \\\
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\\\ an exciting new programming language -- http://www.Zimbu.org ///
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