AI Slop Code Risk Monitor

simh/simh

Name: simh/simh — C Code Quality & Security Review | AI Slop Code Risk Monitor
Creator: AI Slop Code Risk Monitor

Adjusted legacy signal; badge bands: 25 / 50 / 75 (different from dashboard bands).

The Computer History Simulation Project

2.1 Low pattern signal View on GitHub

Open-Source Code Quality, Security and Technical Debt Review

This report summarizes scanner evidence for simh/simh, a C project with 1,890 GitHub stars. SynthScan examined 1,135,265 lines of code across 1273 source files, recording 2423 pattern matches distributed across 5 syntactic categories. The legacy adjusted pattern signal is 2.1 (Low pattern signal); it is not an authorship estimate.

Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.

2.1

Adjusted Signal

2.1

Raw Pattern Score

100%

Time Factor

2026-10-26

Last Push

1.9K

Stars

Language

1.1M

Lines of Code

1.3K

Files

2.4K

Pattern Hits

2026-10-31

Scan Date

0.00

HC Hit Rate

Risk Review · Payload v1

Use each vector to guide manual verification of the underlying findings.

Payload schema: 1.0.0 · Engine: 2.0.0 · Scoring: heuristic-density-v1 · Scan date: 2026-10-31.

Cognitive Ownership Risk 10.0/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 2423 finding(s).

Hallucinated Dependency & Supply Chain Risk 0.0/100 · LOW

Are imports declared and package/API names verified? 0 finding(s).

Agent Over-Engineering Ratio 0.0/100 · LOW

Are wrappers, guards, and repeated structures necessary? 1 finding(s).

PR Review Velocity Impact 10.2/100 · LOW

Which changes need focused human review? 2423 finding(s).

What These Metrics Mean

Adjusted Signal: Legacy pattern score normalized per 1,000 scanned lines and multiplied by the repository-level time factor. It is not an estimate of AI authorship.
Raw Pattern Score: Sum of severity- and context-weighted pattern findings before applying the time factor.
Time Factor: A coarse multiplier based on repository last-push metadata. It does not identify when individual code was written.
Pattern Hits: Count of configured pattern findings. Review each location and surrounding code before acting.
HC Hit Rate: High- and critical-severity findings per scanned file. Severity is a configured detector weight, not proof of a vulnerability or authorship.
Lines / Files: Scan coverage denominators used by the legacy normalized score.

Pattern-Signal History

This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.

Severity Breakdown

Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.

CRITICAL 0HIGH 2MEDIUM 1LOW 2420

Directory Score Breakdown

This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.

Pattern Findings

The scanner identified 2423 distinct pattern matches across 5 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.

Over-Commented Block2419 hits · 2372 pts

Severity	File	Line	Snippet	Context
LOW	sim_sock.h	41	30-Apr-02 RMS Changed VMS stropts include to ioctl	COMMENT
LOW	sim_sock.h	61	#undef WORD /* avoid macro name collision */	COMMENT
LOW	sim_sock.h	81	#include <netinet/in.h> /* for sockaddr_in */	COMMENT
LOW	sim_sock.h	101	#define WSAECONNREFUSED ECONNREFUSED	COMMENT
LOW	sim_sock.h	121	#if defined (__VAX)	COMMENT
LOW	sim_frontpanel.c	41	will be made to retain any prior sim_frontpanel API interfaces.	COMMENT
LOW	sim_frontpanel.c	101	return szMsgBuffer;	COMMENT
LOW	sim_defs.h	121	#define snprintf sim_vax_snprintf	COMMENT
LOW	sim_defs.h	141		COMMENT
LOW	sim_defs.h	221	#elif (defined (__ALPHA) \|\| defined (__ia64)) && defined (VMS) /* 64b VMS */	COMMENT
LOW	sim_defs.h	241	typedef int32 t_svalue;	COMMENT
LOW	sim_defs.h	261	#define NO_vsnprintf	COMMENT
LOW	sim_defs.h	281		COMMENT
LOW	sim_defs.h	301	#define SIM_INLINE _inline	COMMENT
LOW	sim_defs.h	321	# define PACKED_END __attribute__((packed))	COMMENT
LOW	sim_defs.h	361	#define SCPE_UNATT (SCPE_BASE + 1) /* no file */	COMMENT
LOW	sim_defs.h	381	#define SCPE_TIMER (SCPE_BASE + 21) /* hwre timer err */	COMMENT
LOW	sim_defs.h	401	#define SCPE_STALL (SCPE_BASE + 41) /* Telnet conn stall */	COMMENT
LOW	sim_defs.h	421		COMMENT
LOW	sim_defs.h	521	#define DEV_V_DIS 0 /* dev disabled */	COMMENT
LOW	sim_defs.h	541	#define DEV_FLATHELP (1 << DEV_V_FLATHELP) /* Use traditional (unstructured) help */	COMMENT
LOW	sim_defs.h	621		COMMENT
LOW	sim_defs.h	641	#define UNIT_WLK 0100000 /* hardware write lock */	COMMENT
LOW	sim_defs.h	701	};	COMMENT
LOW	sim_defs.h	1081	/* Hidden Blob of Data - Only used for SAVE/RESTORE */	COMMENT
LOW	sim_defs.h	1121	#define AIO_SET_INTERRUPT_LATENCY(instpersec) sim_aio_set_interrupt_latency(instpersec)	COMMENT
LOW	scp.h	41		COMMENT
LOW	sim_ether.c	381		COMMENT
LOW	sim_ether.c	1361	}	COMMENT
LOW	sim_ether.c	1421	strlcat (capabilities, "Polled ", sizeof (capabilities));	COMMENT
LOW	sim_ether.c	2021	free(OidData);	COMMENT
LOW	sim_ether.c	3581	#endif	COMMENT
LOW	sim_ether.c	3661	Mprintf (f, " MediaState: disconnected)\n");	COMMENT
LOW	sim_ether.c	4281	#define TCP_SYN_FLAG (0x02)	COMMENT
LOW	sim_card.h	81		COMMENT
LOW	sim_card.h	101	#define MODE_EBCDIC (5 << UNIT_V_CARD_MODE)	COMMENT
LOW	sim_timer.c	81		COMMENT
LOW	sim_timer.c	421	pthread_setschedparam (pthread_self(), sched_policy, &sched_priority);	COMMENT
LOW	sim_timer.c	821	UNIT sim_throttle_unit; /* one for throttle */	COMMENT
LOW	sim_serial.c	1401	#endif	COMMENT
LOW	sim_console.c	3341	#define sys$qiow SYS$QIOW	COMMENT
LOW	sim_console.c	3841	#elif defined (BSDTTY)	COMMENT
LOW	sim_fio.c	81	t_bool sim_taddr_64; /* t_addr is > 32b and Large File Support available */	COMMENT
LOW	sim_fio.c	2161	return SCPE_ARG;	COMMENT
LOW	sim_video.c	341	#define EVENT_WARP 4 /* warp mouse position for SDL */	COMMENT
LOW	sim_video.c	2541	#if defined (SDL_HINT_RENDER_DIRECT3D_THREADSAFE)	COMMENT
LOW	sim_video.c	2561	#endif	COMMENT
LOW	sim_video.c	2581	SDL_HINT_ACCELEROMETER_AS_JOYSTICK ,	COMMENT
LOW	sim_video.c	2601	#if defined (SDL_HINT_MAC_CTRL_CLICK_EMULATE_RIGHT_CLICK)	COMMENT
LOW	sim_BuildROMs.c	81	#include <string.h>	COMMENT
LOW	sim_tmxr.h	61		COMMENT
LOW	sim_tmxr.h	81	#define TMXR_DBG_SEND 0x80000000 /* Debug Send Activities */	COMMENT
LOW	sim_tmxr.h	101	#define TMLN_SPD_300_BPS 33333 /* usec per character */	COMMENT
LOW	sim_tmxr.h	341		COMMENT
LOW	sim_disk.h	41		COMMENT
LOW	sim_disk.h	61		COMMENT
LOW	sim_disk.h	181	const char str_02; / #2 device specific string */	COMMENT
LOW	sim_disk.h	201	#define product str_02 /* SCSI product string */	COMMENT
LOW	sim_disk.h	221	#define DRVFL_GET_IFTYPE(drv) (((drv)->flags >> DRVFL_V_TYPE) & DRVFL_M_TYPE)	COMMENT
LOW	sim_tape.c	221	#define TOP_WREC 3 /* sim_tape_wrrecf_a */	COMMENT
2359 more matches not shown…

AI Response Leakage1 hit · 8 pts

Severity	File	Line	Snippet	Context
HIGH	H316/h316_mi.c	620	// was to catch the associated interrupt. I've added one for testing	COMMENT

Synthetic Comment Markers1 hit · 8 pts

Severity	File	Line	Snippet	Context
HIGH	3B2/3b2_ports.h	83	#define DC_NORM 0x00 /* command executed as requested */	COMMENT

Slop Phrases1 hit · 2 pts

Severity	File	Line	Snippet	Context
MEDIUM	SDS/sds_cpnl.c	500	fprintf (stderr, " for demonstration purposes (such as watching the A register count\n");	CODE

Hyper-Verbose Identifiers1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	sim_scp_private.h	280	#error "Implementation of function InterlockedCompareExchangePointer() is needed to build with USE_AIO_INTRINSICS"	COMMENT