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vim-patch:9.0.0614: SpellFileMissing autocmd may delete buffer

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Problem:    SpellFileMissing autocmd may delete buffer.
Solution:   Disallow deleting the current buffer to avoid using freed memory.
ef976323e7
This commit is contained in:
zeertzjq
2022-10-15 16:10:56 +08:00
parent 65cbe0cc35
commit 6bc2d6b66b
4 changed files with 24 additions and 2 deletions
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6
src/nvim/buffer.c
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@@ -93,6 +93,8 @@
#endif
static char *e_auabort = N_("E855: Autocommands caused command to abort");
static char e_attempt_to_delete_buffer_that_is_in_use_str[]
= N_("E937: Attempt to delete a buffer that is in use: %s");
// Number of times free_buffer() was called.
static int buf_free_count = 0;
@@ -416,7 +418,9 @@ static bool can_unload_buffer(buf_T *buf)
}
}
if (!can_unload) {
emsg(_("E937: Attempt to delete a buffer that is in use"));
char *fname = buf->b_fname != NULL ? buf->b_fname : buf->b_ffname;
semsg(_(e_attempt_to_delete_buffer_that_is_in_use_str),
fname != NULL ? fname : "[No Name]");
}
return can_unload;
}