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patch 9.1.0006: is*() and to*() function may be unsafe Commit: https://github.com/vim/vim/commit/184f71cc6868a240dc872ed2852542bbc1d43e28 Author: Keith Thompson <Keith.S.Thompson@gmail.com> Date: Thu Jan 4 21:19:04 2024 +0100 patch 9.1.0006: is*() and to*() function may be unsafe Problem: is*() and to*() function may be unsafe Solution: Add SAFE_* macros and start using those instead (Keith Thompson) Use SAFE_() macros for is*() and to*() functions The standard is*() and to*() functions declared in <ctype.h> have undefined behavior for negative arguments other than EOF. If plain char is signed, passing an unchecked value from argv for from user input to one of these functions has undefined behavior. Solution: Add SAFE_*() macros that cast the argument to unsigned char. Most implementations behave sanely for negative arguments, and most character values in practice are non-negative, but it's still best to avoid undefined behavior. The change from #13347 has been omitted, as this has already been separately fixed in commit ac709e2fc0db6d31abb7da96f743c40956b60c3a (v9.0.2054) fixes: #13332 closes: #13347 Signed-off-by: Keith Thompson <Keith.S.Thompson@gmail.com> Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Thu, 04 Jan 2024 21:30:04 +0100
parents dbec60b8c253
children
line wrap: on
line source

" Tests for expand()

source shared.vim

let s:sfile = expand('<sfile>')
let s:slnum = str2nr(expand('<slnum>'))
let s:sflnum = str2nr(expand('<sflnum>'))

func s:expand_sfile()
  return expand('<sfile>')
endfunc

func s:expand_slnum()
  return str2nr(expand('<slnum>'))
endfunc

func s:expand_sflnum()
  return str2nr(expand('<sflnum>'))
endfunc

" This test depends on the location in the test file, put it first.
func Test_expand_sflnum()
  call assert_equal(7, s:sflnum)
  call assert_equal(24, str2nr(expand('<sflnum>')))

  " Line-continuation
  call assert_equal(
        \ 27,
        \ str2nr(expand('<sflnum>')))

  " Call in script-local function
  call assert_equal(18, s:expand_sflnum())

  " Call in command
  command Flnum echo expand('<sflnum>')
  call assert_equal(36, str2nr(trim(execute('Flnum'))))
  delcommand Flnum
endfunc

func Test_expand_sfile_and_stack()
  call assert_match('test_expand_func\.vim$', s:sfile)
  let expected = 'script .*testdir/runtest.vim\[\d\+\]\.\.function RunTheTest\[\d\+\]\.\.Test_expand_sfile_and_stack'
  call assert_match(expected .. '$', expand('<sfile>'))
  call assert_match(expected .. '\[4\]$' , expand('<stack>'))

  " Call in script-local function
  call assert_match('script .*testdir/runtest.vim\[\d\+\]\.\.function RunTheTest\[\d\+\]\.\.Test_expand_sfile_and_stack\[7\]\.\.<SNR>\d\+_expand_sfile$', s:expand_sfile())

  " Call in command
  command Sfile echo expand('<sfile>')
  call assert_match('script .*testdir/runtest.vim\[\d\+\]\.\.function RunTheTest\[\d\+\]\.\.Test_expand_sfile_and_stack$', trim(execute('Sfile')))
  delcommand Sfile

  " Use <stack> from sourced script.
  let lines =<< trim END
    " comment here
    let g:stack_value = expand('<stack>')
  END
  call writefile(lines, 'Xstack', 'D')
  source Xstack
  call assert_match('\<Xstack\[2\]$', g:stack_value)
  unlet g:stack_value

  if exists('+shellslash')
    call mkdir('Xshellslash', 'R')
    let lines =<< trim END
      let g:stack1 = expand('<stack>')
      set noshellslash
      let g:stack2 = expand('<stack>')
      set shellslash
      let g:stack3 = expand('<stack>')
    END
    call writefile(lines, 'Xshellslash/Xstack')
    " Test that changing 'shellslash' always affects the result of expand()
    " when sourcing a script multiple times.
    for i in range(2)
      source Xshellslash/Xstack
      call assert_match('\<Xshellslash/Xstack\[1\]$', g:stack1)
      call assert_match('\<Xshellslash\\Xstack\[3\]$', g:stack2)
      call assert_match('\<Xshellslash/Xstack\[5\]$', g:stack3)
      unlet g:stack1
      unlet g:stack2
      unlet g:stack3
    endfor
  endif
endfunc

func Test_expand_slnum()
  call assert_equal(6, s:slnum)
  call assert_equal(2, str2nr(expand('<slnum>')))

  " Line-continuation
  call assert_equal(
        \ 5,
        \ str2nr(expand('<slnum>')))

  " Call in script-local function
  call assert_equal(1, s:expand_slnum())

  " Call in command
  command Slnum echo expand('<slnum>')
  call assert_equal(14, str2nr(trim(execute('Slnum'))))
  delcommand Slnum
endfunc

func Test_expand()
  new
  call assert_equal("", expand('%:S'))
  call assert_equal('3', '<slnum>'->expand())
  call assert_equal(['4'], expand('<slnum>', v:false, v:true))
  " Don't add any line above this, otherwise <slnum> will change.
  call assert_equal("", expand('%'))
  set verbose=1
  call assert_equal("", expand('%'))
  set verbose=0
  call assert_equal("", expand('%:p'))
  quit
endfunc

func s:sid_test()
  return 'works'
endfunc

func Test_expand_SID()
  let sid = expand('<SID>')
  execute 'let g:sid_result = ' .. sid .. 'sid_test()'
  call assert_equal('works', g:sid_result)
endfunc


" Test for 'wildignore' with expand()
func Test_expand_wildignore()
  set wildignore=*.vim
  call assert_equal('', expand('test_expand_func.vim'))
  call assert_equal('', expand('test_expand_func.vim', 0))
  call assert_equal([], expand('test_expand_func.vim', 0, 1))
  call assert_equal('test_expand_func.vim', expand('test_expand_func.vim', 1))
  call assert_equal(['test_expand_func.vim'],
        \ expand('test_expand_func.vim', 1, 1))
  call assert_fails("call expand('*', [])", 'E745:')
  set wildignore&
endfunc

" vim: shiftwidth=2 sts=2 expandtab