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fix crash when querying game log before starting

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This commit is contained in:
David Rose 2009-12-07 18:58:59 +00:00
parent aac9cb1e82
commit daadba7e4e
1 changed files with 6 additions and 0 deletions
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6
direct/src/plugin/p3dMainObject.cxx
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@ -397,6 +397,10 @@ call_read_system_log(P3D_object *params[], int num_params) {
P3D_object *P3DMainObject::
read_log(const string &log_pathname, P3D_object *params[], int num_params) {
ifstream log(log_pathname.c_str(), ios::in);
if (!log) {
P3DInstanceManager *inst_mgr = P3DInstanceManager::get_global_ptr();
return inst_mgr->new_undefined_object();
}
// Check the parameter, if any--if specified, it specifies the last
// n bytes to retrieve.
@ -408,6 +412,7 @@ read_log(const string &log_pathname, P3D_object *params[], int num_params) {
// Get the size of the file.
log.seekg(0, ios::end);
size_t size = (size_t)log.tellg();
nout << "read_log: " << log_pathname << " is " << size << " bytes\n";
if (max_bytes > 0 && max_bytes < (int)size) {
// Apply the limit.
@ -418,6 +423,7 @@ read_log(const string &log_pathname, P3D_object *params[], int num_params) {
log.seekg(0, ios::beg);
}
nout << "allocating " << size << " bytes to return.\n";
char *buffer = new char[size];
if (buffer == NULL) {
return NULL;