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vim-patch:8.1.0798: changing a blob while iterating over it works strangely

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Problem:    Changing a blob while iterating over it works strangely.
Solution:   Make a copy of the Blob before iterating.
dd29ea1805
This commit is contained in:
Sean Dewar
2021-07-29 20:25:46 +01:00
parent e140eec441
commit 23f5999d28
3 changed files with 48 additions and 19 deletions
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24
src/nvim/eval/typval.c
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@@ -2252,6 +2252,30 @@ void tv_blob_alloc_ret(typval_T *const ret_tv)
tv_blob_set_ret(ret_tv, b);
}
/// Copy a blob typval to a different typval.
///
/// @param[in] from Blob object to copy from.
/// @param[out] to Blob object to copy to.
void tv_blob_copy(typval_T *const from, typval_T *const to)
FUNC_ATTR_NONNULL_ALL
{
assert(from->v_type == VAR_BLOB);
to->v_type = VAR_BLOB;
if (from->vval.v_blob == NULL) {
to->vval.v_blob = NULL;
} else {
tv_blob_alloc_ret(to);
const int len = from->vval.v_blob->bv_ga.ga_len;
if (len > 0) {
to->vval.v_blob->bv_ga.ga_data
= xmemdup(from->vval.v_blob->bv_ga.ga_data, (size_t)len);
}
to->vval.v_blob->bv_ga.ga_len = len;
}
}
//{{{3 Clear
#define TYPVAL_ENCODE_ALLOW_SPECIALS false