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fix: initialize the last 4 bytes of mem to zero#149

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filmil:dev-fix-mem
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fix: initialize the last 4 bytes of mem to zero#149
filmil wants to merge 1 commit intoolofk:mainfrom
filmil:dev-fix-mem

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@filmil filmil commented Jun 28, 2025

These last 4 bytes are, in fact, used for register x0, and must be zero. In multi-valued simulators, however, without an explicit init, these bytes start as undefined. Moving x0 to anywhere results in those undefined bytes "infecting" other registers.

Issue: #148

These last 4 bytes are, in fact, used for register `x0`, and must be
zero. In multi-valued simulators, however, without an explicit init,
these bytes start as undefined. Moving `x0` to anywhere results in
those undefined bytes "infecting" other registers.

Issue: olofk#148
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