xemu/hw/usb
Eric Blake 121829cb21 usb: Fix build with newer gcc
gcc 7 is pickier about our sources:

hw/usb/bus.c: In function ‘usb_port_location’:
hw/usb/bus.c:410:66: error: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size between 0 and 15 [-Werror=format-truncation=]
         snprintf(downstream->path, sizeof(downstream->path), "%s.%d",
                                                                  ^~
hw/usb/bus.c:410:9: note: ‘snprintf’ output between 3 and 28 bytes into a destination of size 16
         snprintf(downstream->path, sizeof(downstream->path), "%s.%d",
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                  upstream->path, portnr);
                  ~~~~~~~~~~~~~~~~~~~~~~~

But we know that there are at most 5 levels of USB hubs, with at
most two digits per level; that plus the separating dots means we
use at most 15 bytes (including trailing NUL) of our 16-byte field.
Adding an assertion to show gcc that we checked for truncation is
enough to shut up the false-positive warning.

Inspired by an idea by Dr. David Alan Gilbert <dgilbert@redhat.com>.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20170717151334.17954-1-eblake@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-07-20 10:02:11 +02:00
..
bus.c usb: Fix build with newer gcc 2017-07-20 10:02:11 +02:00
ccid-card-emulated.c Remove/replace sysemu/char.h inclusion 2017-06-02 11:33:52 +04:00
ccid-card-passthru.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
ccid.h usb: Change *_exitfn return type from int to void 2016-10-28 18:17:23 +03:00
combined-packet.c usb: Clean up includes 2016-01-29 15:07:23 +00:00
core.c usb: don't wakeup during coldplug 2017-05-29 14:18:09 +02:00
desc-msos.c usb: Clean up includes 2016-01-29 15:07:23 +00:00
desc.c usb: accept usb3 control requests 2017-02-06 10:23:17 +01:00
desc.h all: Clean up includes 2016-02-23 12:43:05 +00:00
dev-audio.c usb: replace handle_destroy with unrealize 2017-02-23 15:40:19 +01:00
dev-bluetooth.c usb: replace handle_destroy with unrealize 2017-02-23 15:40:19 +01:00
dev-hid.c usb: replace handle_destroy with unrealize 2017-02-23 15:40:19 +01:00
dev-hub.c usb-hub: set PORT_STAT_C_SUSPEND on host-initiated wake-up 2017-05-29 14:17:59 +02:00
dev-mtp.c usb: Set category and description of the MTP device 2017-01-24 23:26:54 +03:00
dev-network.c usb: replace handle_destroy with unrealize 2017-02-23 15:40:19 +01:00
dev-serial.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
dev-smartcard-reader.c Convert error_report() to warn_report() 2017-07-13 13:49:58 +02:00
dev-storage.c -----BEGIN PGP SIGNATURE----- 2017-03-02 15:25:37 +00:00
dev-uas.c usb: release the created buses 2017-03-01 11:51:29 +04:00
dev-wacom.c usb: replace handle_destroy with unrealize 2017-02-23 15:40:19 +01:00
hcd-ehci-pci.c usb: ehci: fix memory leak in ehci 2017-02-21 08:11:42 +01:00
hcd-ehci-sysbus.c usb: Clean up includes 2016-01-29 15:07:23 +00:00
hcd-ehci.c ehci: add sanity check for maxframes 2017-07-17 11:39:08 +02:00
hcd-ehci.h ehci: stop recursive calls to ehci_work_bh 2017-06-13 12:17:33 +02:00
hcd-musb.c Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND 2016-03-22 22:20:17 +01:00
hcd-ohci.c ohci: relax link check 2017-03-09 09:46:13 +01:00
hcd-uhci.c vmstate: error hint for failed equal checks 2017-06-28 11:18:44 +02:00
hcd-xhci-nec.c xhci: split into multiple files 2017-05-29 14:03:35 +02:00
hcd-xhci.c pci: Fix the wrong assertion. 2017-07-03 22:29:49 +03:00
hcd-xhci.h xhci: split into multiple files 2017-05-29 14:03:35 +02:00
host-legacy.c usb: Clean up includes 2016-01-29 15:07:23 +00:00
host-libusb.c usb-host: support devices with sparse/non-sequential USB interfaces 2017-06-21 15:30:08 +02:00
host-stub.c hw/ppc/spapr: Fix boot path of usb-host storage devices 2017-01-31 10:10:13 +11:00
host.h
libhw.c usb: Clean up includes 2016-01-29 15:07:23 +00:00
Makefile.objs xhci: add CONFIG_USB_XHCI_NEC option 2017-05-29 14:03:36 +02:00
quirks-ftdi-ids.h
quirks-pl2303-ids.h
quirks.c usb: Clean up includes 2016-01-29 15:07:23 +00:00
quirks.h
redirect.c * gdbstub fixes (Alex) 2017-07-14 12:16:09 +01:00
trace-events xhci: apply limits to loops 2017-02-21 08:11:43 +01:00
tusb6010.c Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND 2016-03-22 22:20:17 +01:00
xen-usb.c qapi: merge QInt and QFloat in QNum 2017-06-20 14:31:31 +02:00