Patch 8.2.3246

[Bram Moolenaar]

Patch 8.2.3246
Problem: Memory use after free.
Solution: When clearing a string option set the pointer to "empty_option".
Files: src/option.c


*** ../vim-8.2.3245/src/option.c 2021-07-26 22:19:05.380122574 +0200
--- src/option.c 2021-07-29 21:11:16.519557524 +0200
***************
*** 807,813 ****
else if (options[i].var != VAR_WIN
&& (options[i].flags & P_STRING))
// buffer-local option: free global value
! free_string_option(*(char_u **)options[i].var);
}
}
#endif
--- 807,813 ----
else if (options[i].var != VAR_WIN
&& (options[i].flags & P_STRING))
// buffer-local option: free global value
! clear_string_option((char_u **)options[i].var);
}
}
#endif
*** ../vim-8.2.3245/src/version.c 2021-07-29 20:37:45.656199169 +0200
--- src/version.c 2021-07-29 20:57:00.389627830 +0200
***************
*** 757,758 ****
--- 757,760 ----
{ /* Add new patch number below this line */
+ /**/
+ 3246,
/**/

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/// Bram Moolenaar -- Br...@Moolenaar.net -- http://www.Moolenaar.net \\\
/// \\\
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