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fix(pum): fix heap-buffer-overflow with 'rightleft' (#33146)

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(cherry picked from commit 2681e1fce3)
This commit is contained in:
zeertzjq
2025-03-29 10:07:14 +08:00
committed by github-actions[bot]
parent 06df3e0c0d
commit c57a36cd59
2 changed files with 218 additions and 31 deletions
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6
src/nvim/popupmenu.c
View File

@@ -686,13 +686,13 @@ void pum_redraw(void)
char *rt_start = rt;
int cells = vim_strsize(rt);
if (cells > pum_width) {
if (grid_col - cells < col_off - pum_width) {
do {
cells -= utf_ptr2cells(rt);
MB_PTR_ADV(rt);
} while (cells > pum_width);
} while (grid_col - cells < col_off - pum_width);
if (cells < pum_width) {
if (grid_col - cells > col_off - pum_width) {
// Most left character requires 2-cells but only 1 cell is available on
// screen. Put a '<' on the left of the pum item.
*(--rt) = '<';

207
test/functional/ui/popupmenu_spec.lua
View File

@@ -5498,7 +5498,8 @@ describe('builtin popupmenu', function()
screen:try_resize(32, 8)
command('set completeopt+=menuone,noselect')
feed('i' .. string.rep(' ', 13))
fn.complete(14, { '哦哦哦哦哦哦哦哦哦哦' })
fn.complete(14, { '一二三四五六七八九十' })
if multigrid then
screen:expect({
grid = [[
@@ -5511,18 +5512,101 @@ describe('builtin popupmenu', function()
## grid 3
{2:-- INSERT --} |
## grid 4
{n: 哦哦哦哦哦哦哦哦哦>}|
{n: 一二三四五六七八九>}|
]],
float_pos = { [4] = { -1, 'NW', 2, 1, 12, false, 100 } },
})
else
screen:expect([[
^ |
{1:~ }{n: 哦哦哦哦哦哦哦哦哦>}|
{1:~ }{n: 一二三四五六七八九>}|
{1:~ }|*5
{2:-- INSERT --} |
]])
end
feed('<C-E>')
fn.complete(14, { { word = '一二三', kind = '四五六', menu = '七八九十' } })
if multigrid then
screen:expect({
grid = [[
## grid 1
[2:--------------------------------]|*7
[3:--------------------------------]|
## grid 2
^ |
{1:~ }|*6
## grid 3
{2:-- INSERT --} |
## grid 4
{n: 一二三 四五六 七八>}|
]],
float_pos = { [4] = { -1, 'NW', 2, 1, 12, false, 100 } },
})
else
screen:expect([[
^ |
{1:~ }{n: 一二三 四五六 七八>}|
{1:~ }|*5
{2:-- INSERT --} |
]])
end
feed('<C-E>')
command('set rightleft')
fn.complete(14, { '一二三四五六七八九十' })
if multigrid then
screen:expect({
grid = [[
## grid 1
[2:--------------------------------]|*7
[3:--------------------------------]|
## grid 2
^ |
{1: ~}|*6
## grid 3
{2:-- INSERT --} |
## grid 4
{n:<九八七六五四三二一 }|
]],
float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100 } },
})
else
screen:expect([[
^ |
{n:<九八七六五四三二一 }{1: ~}|
{1: ~}|*5
{2:-- INSERT --} |
]])
end
feed('<C-E>')
fn.complete(14, { { word = '一二三', kind = '四五六', menu = '七八九十' } })
if multigrid then
screen:expect({
grid = [[
## grid 1
[2:--------------------------------]|*7
[3:--------------------------------]|
## grid 2
^ |
{1: ~}|*6
## grid 3
{2:-- INSERT --} |
## grid 4
{n:<八七 六五四 三二一 }|
]],
float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100 } },
})
else
screen:expect([[
^ |
{n:<八七 六五四 三二一 }{1: ~}|
{1: ~}|*5
{2:-- INSERT --} |
]])
end
feed('<C-E>')
end)
it('truncates double-width character correctly with scrollbar', function()
@@ -5530,11 +5614,25 @@ describe('builtin popupmenu', function()
command('set completeopt+=noselect')
command('set pumheight=4')
feed('i' .. string.rep(' ', 12))
local items = {}
local items1 = {}
local items2 = {}
for _ = 1, 8 do
table.insert(items, { word = '哦哦哦哦哦哦哦哦哦哦', equal = 1, dup = 1 })
table.insert(items1, { word = '一二三四五六七八九十', equal = 1, dup = 1 })
end
fn.complete(13, items)
for _ = 1, 2 do
table.insert(
items2,
{ word = 'abcdef', kind = 'ghijkl', menu = 'mnopqrst', equal = 1, dup = 1 }
)
end
for _ = 3, 8 do
table.insert(
items2,
{ word = '一二三', kind = '四五六', menu = '七八九十', equal = 1, dup = 1 }
)
end
fn.complete(13, items1)
if multigrid then
screen:expect({
grid = [[
@@ -5547,20 +5645,109 @@ describe('builtin popupmenu', function()
## grid 3
{2:-- INSERT --} |
## grid 4
{n: 哦哦哦哦哦哦哦哦哦>}{c: }|*2
{n: 哦哦哦哦哦哦哦哦哦>}{s: }|*2
{n: 一二三四五六七八九>}{c: }|*2
{n: 一二三四五六七八九>}{s: }|*2
]],
float_pos = { [4] = { -1, 'NW', 2, 1, 11, false, 100 } },
})
else
screen:expect([[
^ |
{1:~ }{n: 哦哦哦哦哦哦哦哦哦>}{c: }|*2
{1:~ }{n: 哦哦哦哦哦哦哦哦哦>}{s: }|*2
{1:~ }{n: 一二三四五六七八九>}{c: }|*2
{1:~ }{n: 一二三四五六七八九>}{s: }|*2
{1:~ }|*2
{2:-- INSERT --} |
]])
end
feed('<C-E>')
fn.complete(13, items2)
if multigrid then
screen:expect({
grid = [[
## grid 1
[2:--------------------------------]|*7
[3:--------------------------------]|
## grid 2
^ |
{1:~ }|*6
## grid 3
{2:-- INSERT --} |
## grid 4
{n: abcdef ghijkl mnopq}{c: }|*2
{n: 一二三 四五六 七八>}{s: }|*2
]],
float_pos = { [4] = { -1, 'NW', 2, 1, 11, false, 100 } },
})
else
screen:expect([[
^ |
{1:~ }{n: abcdef ghijkl mnopq}{c: }|*2
{1:~ }{n: 一二三 四五六 七八>}{s: }|*2
{1:~ }|*2
{2:-- INSERT --} |
]])
end
feed('<C-E>')
command('set rightleft')
fn.complete(13, items1)
if multigrid then
screen:expect({
grid = [[
## grid 1
[2:--------------------------------]|*7
[3:--------------------------------]|
## grid 2
^ |
{1: ~}|*6
## grid 3
{2:-- INSERT --} |
## grid 4
{c: }{n:<九八七六五四三二一 }|*2
{s: }{n:<九八七六五四三二一 }|*2
]],
float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100 } },
})
else
screen:expect([[
^ |
{c: }{n:<九八七六五四三二一 }{1: ~}|*2
{s: }{n:<九八七六五四三二一 }{1: ~}|*2
{1: ~}|*2
{2:-- INSERT --} |
]])
end
feed('<C-E>')
fn.complete(13, items2)
if multigrid then
screen:expect({
grid = [[
## grid 1
[2:--------------------------------]|*7
[3:--------------------------------]|
## grid 2
^ |
{1: ~}|*6
## grid 3
{2:-- INSERT --} |
## grid 4
{c: }{n:qponm lkjihg fedcba }|*2
{s: }{n:<八七 六五四 三二一 }|*2
]],
float_pos = { [4] = { -1, 'NW', 2, 1, 0, false, 100 } },
})
else
screen:expect([[
^ |
{c: }{n:qponm lkjihg fedcba }{1: ~}|*2
{s: }{n:<八七 六五四 三二一 }{1: ~}|*2
{1: ~}|*2
{2:-- INSERT --} |
]])
end
feed('<C-E>')
end)
it('supports mousemodel=popup', function()