**System Information**
Operating system: Windows 7
GPU: Radeon Vega 64, Divider version: 19.12.2
CPU: Intel Core i7-5960X
**Blender Version(s)**
//(listed are versions tested)//
Working: `2.79b` (official release)
Broken: `2.80` (official release)
Broken: `2.81` (official release)
Broken: `2.82` (official release)
**Short description of error**
All tests with `--debug --factory-startup`
Memory errors in cache handling cause Blender to crash
```Lines=4
Main system:
Calloc returns null: len=35389440 in imb_addrectImBuf, total 3606303772
Lenovo X220:
Error: Not freed memory blocks: 3, total unfreed memory 0.000626 MB
reconstruct len: 104 000000000FA59DB8
reconstruct len: 104 000000000FA59C38
reconstruct len: 120 000000000FA59AB8
```
**Exact steps for others to reproduce the error**
- `--factory-startup`
- Open:
{F8376452}
- Play Animation
- Increase Sequencer memory limit
- Crash
I can get it to consistently crash by filling up the cache; say 4 gigabytes, whilst playing the animation slowly increase the sequence cache limit, after a couple of seconds, crash