[issue38437] Set GC_DEBUG for debug builds of the interpreter

[Tim Peters]

Tim Peters <tim at python.org> added the comment:

+1.  This code got quite brittle when they decided to fit two pointers, a fat integer, and 3 flags into a struct with room for only the two pointers ;-)  It's a mine field now.  Enabling one of the few automated mine detectors is thoroughly sensible.

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nosy: +tim.peters

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38437>
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