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Avoid crash when resizing window

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Sanity check input to gui_macvim_draw_string(); it can happen that 'len'
is non-zero even though first byte of 's' is NUL (test case with file
containing Chinese characters).
This commit is contained in:
Bjorn Winckler
2008-10-11 20:03:23 +02:00
parent ee1fd606dd
commit 275fc44523
1 changed files with 3 additions and 1 deletions
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src/MacVim/gui_macvim.m
+3 -1
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@@ -323,8 +323,10 @@ gui_macvim_draw_string(int row, int col, char_u *s, int len, int flags)
// wide and vice versa.
for (i = 0; i < len; i += cl) {
c = utf_ptr2char(s + i);
cl = utf_ptr2len(s + i);
cn = utf_char2cells(c);
cl = utf_ptr2len(s + i);
if (0 == cl)
len = i; // len must be wrong (shouldn't happen)
if (!utf_iscomposing(c)) {
if ((cn > 1 && !wide) || (cn <= 1 && wide)) {