@@ -3336,6 +3336,7 @@ static void usb_xhci_init(XHCIState *xhci)
USB_SPEED_MASK_LOW |
USB_SPEED_MASK_FULL |
USB_SPEED_MASK_HIGH;
+ assert(i < MAXPORTS);
snprintf(port->name, sizeof(port->name), "usb2 port #%d", i+1);
speedmask |= port->speedmask;
}
@@ -3349,6 +3350,7 @@ static void usb_xhci_init(XHCIState *xhci)
}
port->uport = &xhci->uports[i];
port->speedmask = USB_SPEED_MASK_SUPER;
+ assert(i < MAXPORTS);
snprintf(port->name, sizeof(port->name), "usb3 port #%d", i+1);
speedmask |= port->speedmask;
}
hw/usb/hcd-xhci.c: In function ‘usb_xhci_realize’: hw/usb/hcd-xhci.c:3339:66: warning: ‘%d’ directive output may be truncated writing between 1 and 10 bytes into a region of size 5 [-Wformat-trunca\ tion=] 3339 | snprintf(port->name, sizeof(port->name), "usb2 port #%d", i+1); | ^~ hw/usb/hcd-xhci.c:3339:54: note: directive argument in the range [1, 2147483647] 3339 | snprintf(port->name, sizeof(port->name), "usb2 port #%d", i+1); | ^~~~~~~~~~~~~~~ The xhci code formats the port name into a fixed length buffer which is only large enough to hold port numbers upto 5 digits in decimal representation. We're never going to have a port number that large, so aserting the port number is sensible is sufficient to tell GCC the formatted string won't be truncated. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> --- hw/usb/hcd-xhci.c | 2 ++ 1 file changed, 2 insertions(+)