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kernel: fix bounds check in screenputc()

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This commit is contained in:
cinap_lenrek 2017-07-20 21:03:00 +02:00
parent 4fd68773e2
commit ffb28698bf
3 changed files with 3 additions and 3 deletions
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2
sys/src/9/bcm/screen.c
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@ -303,7 +303,7 @@ screenputc(char *buf)
static int *xp;
static int xbuf[256];
if (xp < xbuf || xp >= &xbuf[sizeof(xbuf)])
if (xp < xbuf || xp >= &xbuf[nelem(xbuf)])
xp = xbuf;
switch (buf[0]) {

2
sys/src/9/omap/screen.c
View file

@ -576,7 +576,7 @@ screenputc(char *buf)
static int *xp;
static int xbuf[256];
if (xp < xbuf || xp >= &xbuf[sizeof(xbuf)])
if (xp < xbuf || xp >= &xbuf[nelem(xbuf)])
xp = xbuf;
switch (buf[0]) {

2
sys/src/9/pc/vga.c
View file

@ -53,7 +53,7 @@ vgascreenputc(VGAscr* scr, char* buf, Rectangle *flushr)
int h, w, pos;
Rectangle r;
if(xp < xbuf || xp >= &xbuf[sizeof(xbuf)])
if(xp < xbuf || xp >= &xbuf[nelem(xbuf)])
xp = xbuf;
h = scr->memdefont->height;