Angus Gratton b7fc067c8c heap: Fix bug when realloc moves data between heaps ...

When realloc-ing to a smaller buffer size which ends up allocated in a different heap, the heap
structure is corrupted. This can only happen:

* If heap checking is Comprehensive (meaning buffers are never shrunk in place) and the heap the buffer was originally allocated in is full.
* Calling heap_caps_realloc() to deliberately move a buffer to a different capabilities type, and shrink it at the same time.

Probable fix for https://github.com/espressif/esp-idf/issues/1582
Probably the same issue:
https://www.esp32.com/viewtopic.php?f=2&t=4583
https://www.esp32.com/viewtopic.php?f=13&t=3717

2018-02-09 16:10:52 +08:00

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