Mercurial > vim
diff src/testdir/test_vimscript.vim @ 15969:9cc42db77a54 v8.1.0990
patch 8.1.0990: floating point exception with "%= 0" and "/= 0"
commit https://github.com/vim/vim/commit/e21c1580b7acb598a6e3c38565434fe5d0e2ad7a
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Mar 2 11:57:09 2019 +0100
patch 8.1.0990: floating point exception with "%= 0" and "/= 0"
Problem: Floating point exception with "%= 0" and "/= 0".
Solution: Avoid dividing by zero. (Dominique Pelle, closes https://github.com/vim/vim/issues/4058)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Sat, 02 Mar 2019 12:00:06 +0100 |
| parents | 05d836c8f1c4 |
| children | d13aa9c5a1d1 |
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--- a/src/testdir/test_vimscript.vim +++ b/src/testdir/test_vimscript.vim @@ -21,7 +21,7 @@ com! -nargs=1 Xout call Xout(<a " " Create a script that consists of the body of the function a:funcname. " Replace any ":return" by a ":finish", any argument variable by a global -" variable, and and every ":call" by a ":source" for the next following argument +" variable, and every ":call" by a ":source" for the next following argument " in the variable argument list. This function is useful if similar tests are " to be made for a ":return" from a function call or a ":finish" in a script " file. @@ -1457,6 +1457,43 @@ func Test_compound_assignment_operators( let x .= 'n' call assert_equal('2n', x) + " Test special cases: division or modulus with 0. + let x = 1 + let x /= 0 + if has('num64') + call assert_equal(0x7FFFFFFFFFFFFFFF, x) + else + call assert_equal(0x7fffffff, x) + endif + + let x = -1 + let x /= 0 + if has('num64') + call assert_equal(-0x7FFFFFFFFFFFFFFF, x) + else + call assert_equal(-0x7fffffff, x) + endif + + let x = 0 + let x /= 0 + if has('num64') + call assert_equal(-0x7FFFFFFFFFFFFFFF - 1, x) + else + call assert_equal(-0x7FFFFFFF - 1, x) + endif + + let x = 1 + let x %= 0 + call assert_equal(0, x) + + let x = -1 + let x %= 0 + call assert_equal(0, x) + + let x = 0 + let x %= 0 + call assert_equal(0, x) + " Test for string let x = 'str' let x .= 'ing'