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avoid segfault if transient invalid text resolution

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@727 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-04-15 22:35:16 +00:00
parent 2aebb3eb2b
commit 3294b949eb
1 changed files with 5 additions and 0 deletions
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5
hw/vga.c
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@ -1154,6 +1154,11 @@ static void vga_draw_text(VGAState *s, int full_update)
((s->cr[0x07] & 0x40) << 3);
height = (height + 1) / cheight;
}
if ((height * width) > CH_ATTR_SIZE) {
/* better than nothing: exit if transient size is too big */
return;
}
if (width != s->last_width || height != s->last_height ||
cw != s->last_cw || cheight != s->last_ch) {
s->last_scr_width = width * cw;