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libmemdraw: fix int size bug

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R=rsc, quanstro
CC=plan9port.codebot
http://codereview.appspot.com/6657043
This commit is contained in:
Erik Quanstrom 2012-10-21 12:08:49 -04:00 • committed by Russ Cox
parent c5bfba483f
commit 33cdf63251
1 changed files with 2 additions and 1 deletions
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3
src/libmemdraw/alloc.c
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@ -141,7 +141,8 @@ byteaddr(Memimage *i, Point p)
{
uchar *a;
a = i->data->bdata+i->zero+sizeof(u32int)*p.y*i->width;
/* careful to sign-extend negative p.y for 64-bits */
a = i->data->bdata+i->zero+(int)(sizeof(u32int)*p.y*i->width);
if(i->depth < 8){
/*