Setting this environment variable disables the JIT and runs all functions through the interpreter, no matter how often they are called.
malicious code may be able to evade the termination and access unexpected memory locations this way.
Setting this environment variable runs the garbage collector before each memory allocation. This is very expensive at run-time, but it quickly uncovers many memory management errors, for example the manual deletion of an object belonging to the QML engine from C++.
On Linux, the
perf-<pid>.mapin /tmp which perf then reads. This environment variable, if set, causes the JIT to generate this file.
Disables the disk cache. See The QML Disk Cache .
Outputs the IR bytecode generated by Qt to the console. Has to be combined with
QML_DISABLE_DISK_CACHEor already cached bytecode will not be shown.