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qemudDomainAttachSCSIDisk: avoid FP NULL-ptr-deref from clang

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* src/qemu/qemu_driver.c (qemudDomainAttachSCSIDisk):
Initialize "cont" to NULL, so clang knows it's set.
Add an sa_assert so it knows it's non-NULL when dereferenced.
This commit is contained in:
Jim Meyering 2010-04-07 17:27:50 +02:00
parent 6e2f811443
commit a0dc452172
1 changed files with 6 additions and 1 deletions
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7
src/qemu/qemu_driver.c
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@ -6851,7 +6851,7 @@ static int qemudDomainAttachSCSIDisk(struct qemud_driver *driver,
{
int i;
qemuDomainObjPrivatePtr priv = vm->privateData;
virDomainControllerDefPtr cont;
virDomainControllerDefPtr cont = NULL;
char *drivestr = NULL;
char *devstr = NULL;
int ret = -1;
@ -6894,6 +6894,11 @@ static int qemudDomainAttachSCSIDisk(struct qemud_driver *driver,
goto error;
}
/* Tell clang that "cont" is non-NULL.
This is because disk->info.addr.driver.controller is unsigned,
and hence the above loop must iterate at least once. */
sa_assert (cont);
if (cont->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("SCSI controller %d was missing its PCI address"), cont->idx);