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eval/decode.c: Avoid NULL arg to memchr() #7332

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Clang complains because memchr has undefined behavior if the ptr is
NULL, even if len==0.

Helped-by: Nikolai Aleksandrovich Pavlov <kp-pav@yandex.ru>
This commit is contained in:
Adrian Neumann
2017-09-28 10:19:57 +02:00
committed by Justin M. Keyes
parent d31b94ac20
commit 8f03014e88
2 changed files with 8 additions and 1 deletions
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7
test/functional/eval/json_functions_spec.lua
View File

@@ -776,4 +776,11 @@ describe('json_encode() function', function()
it('can dump NULL dictionary', function()
eq('{}', eval('json_encode(v:_null_dict)'))
end)
it('fails to parse NULL strings and lists', function()
eq('Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode($XXX_UNEXISTENT_VAR_XXX)'))
eq('Vim(call):E474: Attempt to decode a blank string',
exc_exec('call json_decode(v:_null_list)'))
end)
end)