From: Marc-André Lureau Date: Wed, 21 Nov 2012 13:16:08 +0000 (+0100) Subject: ccid-card-emul: do not crash if backend is not provided X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d0ebd78890fba2ab458ec34763dae8566ccb1b72;p=qemu.git ccid-card-emul: do not crash if backend is not provided Program received signal SIGSEGV, Segmentation fault. __strcmp_sse42 () at ../sysdeps/x86_64/multiarch/strcmp-sse42.S:164 164 movdqu (%rsi), %xmm2 (gdb) bt at /home/elmarco/320g/src/qemu/hw/ccid-card-emulated.c:477 at /home/elmarco/320g/src/qemu/hw/ccid-card-emulated.c:503 Signed-off-by: Marc-André Lureau Reviewed-by: Alon Levy --- diff --git a/hw/usb/ccid-card-emulated.c b/hw/usb/ccid-card-emulated.c index d534c94c1a..6cbb1766ab 100644 --- a/hw/usb/ccid-card-emulated.c +++ b/hw/usb/ccid-card-emulated.c @@ -473,6 +473,9 @@ static uint32_t parse_enumeration(char *str, { uint32_t ret = not_found_value; + if (str == NULL) + return 0; + while (table->name != NULL) { if (strcmp(table->name, str) == 0) { ret = table->value;