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patch 8.2.3582: reading uninitialized memory when giving spell suggestions

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Problem:    Reading uninitialized memory when giving spell suggestions.
Solution:   Check that preword is not empty.
This commit is contained in:
Bram Moolenaar
2021-11-04 15:46:05 +00:00
parent 0b5b06cb47
commit 15d9890eee
3 changed files with 11 additions and 1 deletions
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2
src/spellsuggest.c
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@@ -1619,7 +1619,7 @@ suggest_trie_walk(
// char, e.g., "thes," -> "these".
p = fword + sp->ts_fidx;
MB_PTR_BACK(fword, p);
if (!spell_iswordp(p, curwin))
if (!spell_iswordp(p, curwin) && *preword != NUL)
{
p = preword + STRLEN(preword);
MB_PTR_BACK(preword, p);