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fix strict-overflow cases #3236

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This commit is contained in:
Nikolay Orlyuk
2014-05-04 19:51:31 +03:00
committed by Justin M. Keyes
parent fc7055f6e9
commit bbe24da869
2 changed files with 13 additions and 15 deletions
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12
src/nvim/undo.c
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@@ -212,8 +212,11 @@ static void u_check(int newhead_may_be_NULL) {
*/
int u_save_cursor(void)
{
return u_save((linenr_T)(curwin->w_cursor.lnum - 1),
(linenr_T)(curwin->w_cursor.lnum + 1));
linenr_T cur = curwin->w_cursor.lnum;
linenr_T top = cur > 0 ? cur - 1 : 0;
linenr_T bot = cur + 1;
return u_save(top, bot);
}
/*
@@ -227,10 +230,9 @@ int u_save(linenr_T top, linenr_T bot)
if (undo_off)
return OK;
if (top > curbuf->b_ml.ml_line_count
|| top >= bot
|| bot > curbuf->b_ml.ml_line_count + 1)
if (top >= bot || bot > (curbuf->b_ml.ml_line_count + 1)) {
return FAIL; /* rely on caller to do error messages */
}
if (top + 2 == bot)
u_saveline((linenr_T)(top + 1));