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Bruce Merry authored
When HAVE_MALLOC_SIZE is false, each call to zrealloc causes used_memory to increase by PREFIX_SIZE more than it should, due to mis-matched accounting between the original zmalloc (which includes PREFIX size in its increment) and zrealloc (which misses it from its decrement). I've also supplied a command-line test to easily demonstrate the problem. It's not wired into the test framework, because I don't know TCL so I'm not sure how to automate it.
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