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 #4058)
diff --git a/src/testdir/test_vimscript.vim b/src/testdir/test_vimscript.vim
index 41a1dda..57e673f 100644
--- a/src/testdir/test_vimscript.vim
+++ b/src/testdir/test_vimscript.vim
@@ -21,7 +21,7 @@
"
" 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 @@
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'