Andrew Kesterson 0f3d8a0ac6 Close the value.c mutation survivors, and correct one that cannot be ...

Two new tests in value_arithmetic.c, each verified by hand-applying the mutant
rather than by assuming. The obvious maximum-length-string test does not work:
math_plus clones self into the scratch first, so joining a full string to an
empty one leaves the byte a short copy missed already correct. The operands
have to sum to the limit without either being the answer.

One of the five listed survivors is equivalent and cannot be killed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

2026-07-31 11:38:45 -04:00

9.1 KiB

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