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patch 8.2.4298: divide by zero with huge tabstop value

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Problem:    Divide by zero with huge tabstop value.
Solution:   Reject tabstop value that overflows to zero.
This commit is contained in:
Bram Moolenaar 2022-02-05 11:13:05 +00:00
parent 21ebb0899e
commit fc88df42f1
3 changed files with 13 additions and 1 deletions
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2
src/indent.c
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@ -71,7 +71,7 @@ tabstop_set(char_u *var, int **array)
int n = atoi((char *)cp); int n = atoi((char *)cp);
// Catch negative values, overflow and ridiculous big values. // Catch negative values, overflow and ridiculous big values.
if (n < 0 || n > TABSTOP_MAX) if (n <= 0 || n > TABSTOP_MAX)
{ {
semsg(_(e_invalid_argument_str), cp); semsg(_(e_invalid_argument_str), cp);
vim_free(*array); vim_free(*array);

10
src/testdir/test_vartabs.vim
View File

@ -146,6 +146,16 @@ func Test_vartabs()
bwipeout! bwipeout!
endfunc endfunc
func Test_retab_invalid_arg()
new
call setline(1, "\ttext")
retab 0
call assert_fails("retab -8", 'E487: Argument must be positive')
call assert_fails("retab 10000", 'E475:')
call assert_fails("retab 720575940379279360", 'E475:')
bwipe!
endfunc
func Test_vartabs_breakindent() func Test_vartabs_breakindent()
CheckOption breakindent CheckOption breakindent
new new

2
src/version.c
View File

@ -746,6 +746,8 @@ static char *(features[]) =
static int included_patches[] = static int included_patches[] =
{ /* Add new patch number below this line */ { /* Add new patch number below this line */
/**/
4298,
/**/ /**/
4297, 4297,
/**/ /**/