nx_fixshot_lib.nx
buildroot/runtime/nx_fixshot_lib.nx
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nx_fixshot_lib.nx -- RETRIEVAL FEW-SHOTS for the autonomous fix loop (bugforge-swe-scale rung 2,
2026-07-24). The episode prompt's few-shots are HARDCODED (min2/abs1) -- the harness never learns
from its own verified history. This lib retrieves the K most-similar (buggy TAB fixed) pairs from
the fixcorpus and composes them as prompt shots, so every mined/verified fix improves future
episodes (the cross-instance learning SOTA rung).
CONTAMINATION GUARD (bench honesty): rows whose function NAME equals the instance under repair are
EXCLUDED -- retrieval may teach patterns from SIMILAR fixes, never leak the target's own answer.
Similarity: 4-byte shingle overlap (stride 4) between the buggy fn and each row's buggy half --
cheap, deterministic, no model. Rows scored 0 are never emitted (no random shots).
API:
fsl_shots(corpus, buggy, bn, selfname, dst, dstcap) -> bytes written into dst (0 = no shots;
caller falls back to the hardcoded shots => rule-19 additive, default behavior unchanged)
license_tier: ORIGINAL No hw writes (Rule 26).
dependencies 1 imports · 0 importers
imports: nx_syscalls.nx
imported by: nobody (leaf or entry point)
structs
| none |
consts
| 17 | const FSL_FCAP: i64 = 131072 // corpus read cap |
| 18 | const FSL_MAXROWS: i64 = 256 |
| 19 | const FSL_K: i64 = 2 // shots emitted |
| 20 | const FSL_SH_K: i64 = 4 // shingle length |
| 21 | const FSL_SH_STRIDE: i64 = 4 |
| 22 | const FSL_SH_MAX: i64 = 128 // shingles fingerprinted per fn |
functions
| 24 | func fsl_slen(s: *u8) -> i64 { var n: i64 = 0; while s[n] != (0 as u8) { n = n + 1 } return n } called by 1: fsl_isself |
| 27 | func fsl_overlap(a: *u8, an: i64, b: *u8, bn: i64) -> i64 called by 1: fsl_shots |
| 52 | func fsl_isself(rb: *u8, rn: i64, selfname: *u8) -> i64 |
| 64 | func fsl_shots(corpus: *u8, buggy: *u8, bn: i64, selfname: *u8, dst: *u8, dstcap: i64) -> i64 |