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VBOX: Add additional check for a valid pointer to prevent crash condition.

This commit is contained in:
Rom Walton 2015-03-26 17:32:52 -04:00
parent 46648d0d38
commit 70def08644
1 changed files with 8 additions and 8 deletions
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16
samples/vboxwrapper/vbox_mscom_impl.cpp
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@ -76,25 +76,25 @@ const char *MachineStateToName(MachineState State)
retval = virtualbox_check_error(rc, __FUNCTION__, __FILE__, __LINE__)
int virtualbox_check_error(HRESULT rc, char* szFunction, char* szFile, int iLine) {
HRESULT local_rc;
HRESULT hr;
CComPtr<IErrorInfo> pErrorInfo;
CComBSTR strSource;
CComBSTR strDescription;
if (FAILED(rc)) {
vboxlog_msg("Error 0x%x in %s (%s:%d)", rc, szFunction, szFile, iLine);
local_rc = GetErrorInfo(0, &pErrorInfo);
if (SUCCEEDED(local_rc)) {
local_rc = pErrorInfo->GetSource(&strSource);
if (SUCCEEDED(local_rc) && strSource) {
hr = ::GetErrorInfo(0, &pErrorInfo);
if (SUCCEEDED(hr) && pErrorInfo) {
hr = pErrorInfo->GetSource(&strSource);
if (SUCCEEDED(hr) && strSource) {
vboxlog_msg("Error Source : %S", strSource);
}
local_rc = pErrorInfo->GetDescription(&strDescription);
if (SUCCEEDED(local_rc) && strDescription) {
hr = pErrorInfo->GetDescription(&strDescription);
if (SUCCEEDED(hr) && strDescription) {
vboxlog_msg("Error Description: %S", strDescription);
}
} else {
vboxlog_msg("Error: Getting Error Info! rc = 0x%x", local_rc);
vboxlog_msg("Error: Getting Error Info! hr = 0x%x", hr);
}
}
return rc;