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add_ratio_ratio fixed.

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Simon Brooke 2026-02-15 17:38:54 +00:00
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docs/state-of-play.md
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# State of Play
## 20260215
Both of yesterday's regressions are fixed. Memory problem still in much the
same state.
> Allocation summary: allocated 1210; deallocated 10; not deallocated 1200.
That left the add ratios problem which was deeper. I had unintended unterminated
recursion happening there. :-(
It burned through 74 cons pages each of 1,024 cons cells, total 76,800 cells,
and 19,153 stack frames. before it got there; and then threw the exception back
up through each of those 19,153 stack frames. But the actual exception message
was `Unrecognised tag value 0 ( )`, which is not enormously helpful.
However, once I had recognised what the problem was, it was quickly fixed, with
the added bonus that the new solution will automatically work for bignum
fractions once bignums are working.
So we're down to eight unit tests failing: the memory leak, one unimplemented
feature, and the bignum problem.
## 20260214
### Memory leaks