A function with no `jr $ra` of its own falls into a sibling's shared
epilogue. gcc-2.7.2 has no sibcall/tail-merge pass and appends an epilogue to
every C function it compiles, so no C spelling can ever match — converting one
to an INCLUDE_ASM stub just puts an unbankable target into the drawable
frontier.
I did exactly that to six functions in src/800c.c, on a `rows == 1` filter
that meant "the manifest listed one row", not "this is an independent
function" — ignoring the DECOMPILE-AS-PARENT disposition whose entire meaning
is "this row is a FRAGMENT". Three drafting agents then rediscovered §179-C
from scratch, one citing the cookbook line that names its own target.
The symptom is one grep, so nobody should pay an agent to find it again.
TWO THINGS THIS COST, both caught only by testing a known-true case:
* the first version read the function's .s — but splat stops emitting <fn>.s
for a verbatim body, so it had nothing to read and returned False: inert
for precisely the case it guards. It now reads the verbatim block itself.
* my first negative control was CloseEvent, a libapi trampoline that
genuinely has no `jr $ra` — a "false positive" that was the correct
answer. Re-controlled on VectorNormal (verbatim, has jr $ra, guard stays
silent) vs func_80047E58 (verbatim, no jr $ra, guard fires).
Census of main's verbatim blocks: 37 have jr $ra, 100 do not.
I converted 9 main SDK functions from §265 verbatim bodies to INCLUDE_ASM
stubs so they could be decompiled, then 'banked' all 9 from stored drafts
that were those same verbatim asm blocks. match_one printed closeness 0 nine
times and the whole-binary gate went BYTE-IDENTICAL — both truthfully, since
a raw asm blob assembles to the bytes it was copied from. Nothing was
decompiled. progress.py caught it by not moving: REAL 882, VERBATIM 164,
INCLUDE_ASM 37, identical before and after. The banks are reverted.
The cookbook's closing paragraph, written last session, describes this exact
trap. I read it and hit it anyway ~4 hours later, because the rule was
addressed to 'any burst over this class' and I was hand-picking stored
drafts, and because 'no byte gate can catch it' reads as unpreventable. The
byte CHECK cannot; a slate-load refusal can.
draft_prechecks.is_verbatim_asm_draft: a file-scope __asm__ naming the fn via
.ent/.globl/label AND no C definition of it. Both spellings of .ent handled
(inside a C string it is a backslash-t, not a tab — five censuses of this
class disagreed until that was fixed). gate_main refuses such a slate beside
its existing INCLUDE_ASM no-op refusal (R43).
Census of the draft store: 1,099 of 704,375 .c files are verbatim-asm drafts
under ordinary <fn>.c names. Negative control: 0 false positives across
45,898 drafts carrying both a C definition and an inline __asm__ (R39).
Final S50 state: 307 instances banked, stubs 12,468 -> 12,161, fleet 95.3% instr / 90.0%
distinct / 96.65% fn-count. R22 clean rebuild 4x, check-all 213/213 every time.
- tools/aprop_autodraft.py + tools/draft_prechecks.py: seed body + symbol_map + a MINIMAL
synthesized preamble. The seed's decl layer never travels — that layer is family_sweep's
dominant failure (331 of 458 S49 verdicts). 256 banked at zero agent tokens, against the
~20M the same work would have cost as a wave.
- Macro seeds (567 of 1196 members, all 3737 de-macroize) take the DEFINITION only; the block
stays the decl source. Pasting it whole measured 28% vs inline's 68% — func_8016AB6C's macro
is 1,891 lines of which 108 are the function.
- IMM is a second engine, not a wall: T2a's imm_map_tier1 resolves a per-location LITERAL like
symbol_map resolves a per-location SYMBOL. 131 of 275 IMM members resolve.
- draft_prechecks negative-controlled against ALL 205 banked drafts: zero false positives,
catches 39 of 67 known failures. That control found two bugs in the checks themselves —
C89 `f()` declares UNSPECIFIED parameters (not zero), and a member's own definition read as
a call to itself. Conservative by design: a pre-check that discards good drafts is worse
than one that lets a few builds fail.
- The A-prop pool is now priced exactly: PURE 437/37,376 ins, IMM 275/8,849, STRUCT 238/4,259.
- Cookbook §171a; SETUP rows; CURRENT_PHASE S50 FINAL checkpoint.
Drew T