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updated for version 7.2.366

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Problem:    CTRL-B doesn't go back to the first line of the buffer.
Solution:   Avoid an overflow when adding MAXCOL.
This commit is contained in:
Bram Moolenaar
2010-02-17 18:20:37 +01:00
parent 8c83ac3d83
commit bacd9da40e
2 changed files with 17 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/move.c
View File

@@ -1610,7 +1610,7 @@ scrollup_clamp()
* Add one line above "lp->lnum". This can be a filler line, a closed fold or
* a (wrapped) text line. Uses and sets "lp->fill".
* Returns the height of the added line in "lp->height".
* Lines above the first one are incredibly high.
* Lines above the first one are incredibly high: MAXCOL.
*/
static void
topline_back(lp)
@@ -1942,7 +1942,7 @@ scroll_cursor_bot(min_scroll, set_topbot)
{
loff.lnum = curwin->w_topline;
topline_back(&loff);
if (used + loff.height > curwin->w_height)
if (loff.height == MAXCOL || used + loff.height > curwin->w_height)
break;
used += loff.height;
#ifdef FEAT_DIFF
@@ -2021,7 +2021,10 @@ scroll_cursor_bot(min_scroll, set_topbot)
/* Add one line above */
topline_back(&loff);
used += loff.height;
if (loff.height == MAXCOL)
used = MAXCOL;
else
used += loff.height;
if (used > curwin->w_height)
break;
if (loff.lnum >= curwin->w_botline
@@ -2175,7 +2178,10 @@ scroll_cursor_halfway(atend)
if (below > above) /* add a line above the cursor */
{
topline_back(&loff);
used += loff.height;
if (loff.height == MAXCOL)
used = MAXCOL;
else
used += loff.height;
if (used > curwin->w_height)
break;
above += loff.height;
@@ -2472,9 +2478,12 @@ onepage(dir, count)
while (n <= curwin->w_height && loff.lnum >= 1)
{
topline_back(&loff);
n += loff.height;
if (loff.height == MAXCOL)
n = MAXCOL;
else
n += loff.height;
}
if (n <= curwin->w_height) /* at begin of file */
if (loff.lnum < 1) /* at begin of file */
{
curwin->w_topline = 1;
#ifdef FEAT_DIFF

2
src/version.c
View File

@@ -681,6 +681,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
366,
/**/
365,
/**/