FA-4054 / Parsing / Member archive
A prefix AST silently ignores an unconsumed token · case 04
A prefix AST silently ignores an unconsumed token.
Case contract
Parse binary +/* prefix expressions with other tokens as leaves; reject missing operands and unconsumed tokens.
Why this case matters
A local executable model for consumers of structured text; oracle values are authored literals, not outputs copied from the repaired implementation.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| boundary 1 | ["+", "a", "b"] | null | Failed |
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