Version 1 (modified by cotto, 6 years ago)

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Intro

The PMC Union is being deprecated, which means that any instances of PMC_int_val, etc need to disappear. This is a big job with several gotchas.

Inheritance

Because the PMC union struct is part of a PMC's internals, its use is affected by PMC inheritance. The following image shows the dependencies between all *core* PMCs. This does not include PMCs from HLLs. Because of these dependencies, all PMCs in a given dependency tree will have to be updated simultaneously. This only means that all instances of e.g. PMC_struct_val will have to be updated, not all instances of all PMC_x_val. http://mksig.org/img/pmc_deps.png

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