Make qt_check_pointer more OOM-safe

First, it can never return, so we can mark it Q_NORETURN and add an
std::termianate at the end. Though if it did, we'd end up in a null-
pointer dereference crash in the caller.

Second, add Q_DECL_NOTHROW to it. It can't throw, but it terminates
execution. This also prevents both puts and fprintf from escaping via
pthread asynchronous cancellation on Linux/glibc.

Third, don't use QMessageLogger, since that allocates memory and
actually uses QString. If we really are in an OOM situation, then
QString's failed allocation would recurse back into qt_check_pointer.
We'd compound the OOM situation with a stack overflow...

Change-Id: Ia53158e207a94bf49489fffd14c81c47971f4e82
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

0 files changed, 0 insertions, 0 deletions