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patch 8.1.1812: reading a truncted undo file hangs Vim

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Problem:    Reading a truncted undo file hangs Vim.
Solution:   Check for reading EOF. (closes #4769)
This commit is contained in:
Bram Moolenaar
2019-08-04 18:55:35 +02:00
parent c363fe1599
commit fb06d767a8
3 changed files with 26 additions and 0 deletions
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6
src/undo.c
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@@ -1317,6 +1317,12 @@ unserialize_uhp(bufinfo_T *bi, char_u *file_name)
int len = undo_read_byte(bi);
int what;
if (len == EOF)
{
corruption_error("truncated", file_name);
u_free_uhp(uhp);
return NULL;
}
if (len == 0)
break;
what = undo_read_byte(bi);