Mercurial > vim
diff src/testdir/test_ex_z.vim @ 11303:ef32a5c74515 v8.0.0537
patch 8.0.0537: illegal memory access with :z and large count
commit https://github.com/vim/vim/commit/fa0ad0bb0b4255e64ebcf9269d60a942e0ae7ff9
Author: Bram Moolenaar <Bram@vim.org>
Date: Sun Apr 2 15:45:17 2017 +0200
patch 8.0.0537: illegal memory access with :z and large count
Problem: Illegal memory access with :z and large count.
Solution: Check for number overflow, using long instead of int. (Dominique
Pelle, closes #1612)
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Sun, 02 Apr 2017 16:00:05 +0200 |
parents | |
children | 1074f58e1673 |
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new file mode 100644 --- /dev/null +++ b/src/testdir/test_ex_z.vim @@ -0,0 +1,78 @@ +" Test :z + +func Test_z() + call setline(1, range(1, 100)) + + let a = execute('20z3') + call assert_equal("\n20\n21\n22", a) + call assert_equal(22, line('.')) + " 'window' should be set to the {count} value. + call assert_equal(3, &window) + + " If there is only one window, then twice the amount of 'scroll' is used. + set scroll=2 + let a = execute('20z') + call assert_equal("\n20\n21\n22\n23", a) + call assert_equal(23, line('.')) + + let a = execute('20z+3') + " FIXME: I would expect the same result as '20z3' but it + " gives "\n21\n22\n23" instead. Bug in Vim or in ":help :z"? + "call assert_equal("\n20\n21\n22", a) + "call assert_equal(22, line('.')) + + let a = execute('20z-3') + call assert_equal("\n18\n19\n20", a) + call assert_equal(20, line('.')) + + let a = execute('20z=3') + call assert_match("^\n18\n19\n-\\+\n20\n-\\+\n21\n22$", a) + call assert_equal(20, line('.')) + + let a = execute('20z^3') + call assert_equal("\n14\n15\n16\n17", a) + call assert_equal(17, line('.')) + + let a = execute('20z.3') + call assert_equal("\n19\n20\n21", a) + call assert_equal(21, line('.')) + + let a = execute('20z#3') + call assert_equal("\n 20 20\n 21 21\n 22 22", a) + call assert_equal(22, line('.')) + + let a = execute('20z#-3') + call assert_equal("\n 18 18\n 19 19\n 20 20", a) + call assert_equal(20, line('.')) + + let a = execute('20z#=3') + call assert_match("^\n 18 18\n 19 19\n-\\+\n 20 20\n-\\+\n 21 21\n 22 22$", a) + call assert_equal(20, line('.')) + + " Test with {count} bigger than the number of lines in buffer. + let a = execute('20z1000') + call assert_match("^\n20\n21\n.*\n99\n100$", a) + call assert_equal(100, line('.')) + + let a = execute('20z-1000') + call assert_match("^\n1\n2\n.*\n19\n20$", a) + call assert_equal(20, line('.')) + + let a = execute('20z=1000') + call assert_match("^\n1\n.*\n-\\+\n20\n-\\\+\n.*\n100$", a) + call assert_equal(20, line('.')) + + call assert_fails('20z=a', 'E144:') + + set window& scroll& + bw! +endfunc + +func Test_z_bug() + " This used to access invalid memory as a result of an integer overflow + " and freeze vim. + normal ox + normal Heat + z777777776666666 + ') +endfunc