Repository Analysis

KDE/heaptrack

A heap memory profiler for Linux

2.4 Likely human-written View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of KDE/heaptrack, a C++ project with 4,122 GitHub stars. SynthScan v2.0 examined 31,283 lines of code across 150 source files, recording 93 pattern matches distributed across 4 syntactic categories. The overall adjusted score of 2.4 places this repository in the Likely human-written band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

2.4
Adjusted Score
2.4
Raw Score
100%
Time Factor
2026-07-13
Last Push
4.1K
Stars
C++
Language
31.3K
Lines of Code
150
Files
93
Pattern Hits
2026-07-14
Scan Date
0.00
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.

No multi-scan history yet — run the scanner again to build trend data.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 0MEDIUM 1LOW 92

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 93 distinct pattern matches across 4 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. 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 diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Over-Commented Block87 hits · 66 pts
SeverityFileLineSnippetContext
LOWtests/manual/perf-heaptrack.py1#COMMENT
LOWtests/benchmarks/bench_tree.cpp1/*COMMENT
LOW3rdparty/doctest.h1/*COMMENT
LOW3rdparty/doctest.h21//COMMENT
LOW3rdparty/doctest.h41// which uses the Boost Software License - Version 1.0COMMENT
LOW3rdparty/doctest.h61#define DOCTEST_TOSTR(x) DOCTEST_TOSTR_IMPL(x)COMMENT
LOW3rdparty/doctest.h81#endifCOMMENT
LOW3rdparty/doctest.h101#define DOCTEST_ICC DOCTEST_COMPILER(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, 0)COMMENT
LOW3rdparty/doctest.h121#if DOCTEST_CLANG && !DOCTEST_ICCCOMMENT
LOW3rdparty/doctest.h141 DOCTEST_GCC_SUPPRESS_WARNING_PUSH DOCTEST_GCC_SUPPRESS_WARNING(w)COMMENT
LOW3rdparty/doctest.h261// general compiler feature support table: https://en.cppreference.com/w/cpp/compiler_supportCOMMENT
LOW3rdparty/doctest.h281#define DOCTEST_CONFIG_WINDOWS_SEHCOMMENT
LOW3rdparty/doctest.h301COMMENT
LOW3rdparty/doctest.h321#if DOCTEST_MSVCCOMMENT
LOW3rdparty/doctest.h341#endif // DOCTEST_CONFIG_IMPLEMENTATION_IN_DLLCOMMENT
LOW3rdparty/doctest.h361#define DOCTEST_UNUSEDCOMMENT
LOW3rdparty/doctest.h381#endif // DOCTEST_NORETURNCOMMENT
LOW3rdparty/doctest.h401#ifndef DOCTEST_NO_SANITIZE_INTEGERCOMMENT
LOW3rdparty/doctest.h421#define DOCTEST_DEFINE_INTERFACE(name) \COMMENT
LOW3rdparty/doctest.h441#define DOCTEST_PLATFORM_MACCOMMENT
LOW3rdparty/doctest.h461#ifndef DOCTEST_BREAK_INTO_DEBUGGERCOMMENT
LOW3rdparty/doctest.h481#define DOCTEST_BREAK_INTO_DEBUGGER() __debugbreak()COMMENT
LOW3rdparty/doctest.h501// which case we don't want to forward declare stuff from std - for reference:COMMENT
LOW3rdparty/doctest.h561#include <type_traits>COMMENT
LOW3rdparty/doctest.h581// Idea taken from this lecture about the string implementation of facebook/folly - fbstringCOMMENT
LOW3rdparty/doctest.h1361 const DOCTEST_REF_WRAP(R) rhs) {COMMENT
LOW3rdparty/doctest.h1481 DOCTEST_RELATIONAL_OP(ne, !=)COMMENT
LOW3rdparty/doctest.h2121COMMENT
LOW3rdparty/doctest.h2441 #__VA_ARGS__, __VA_ARGS__)COMMENT
LOW3rdparty/doctest.h2461#define DOCTEST_WARN_EQ(...) DOCTEST_BINARY_ASSERT(DT_WARN_EQ, eq, __VA_ARGS__)COMMENT
LOW3rdparty/doctest.h2541#define DOCTEST_CHECK_THROWS_WITH(expr, ...) DOCTEST_ASSERT_THROWS_WITH(expr, #expr, DT_CHECK_THROWS_WITH, __VA_ARGS__)COMMENT
LOW3rdparty/doctest.h2561#define DOCTEST_WARN_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DCOMMENT
LOW3rdparty/doctest.h2621COMMENT
LOW3rdparty/doctest.h2641#define DOCTEST_ADD_FAIL_CHECK_AT(file, line, ...) (static_cast<void>(0))COMMENT
LOW3rdparty/doctest.h2681#define DOCTEST_REQUIRE_EQ(...) [&] { return doctest::detail::eq(__VA_ARGS__); }()COMMENT
LOW3rdparty/doctest.h2701#define DOCTEST_CHECK_UNARY_FALSE(...) [&] { return !(__VA_ARGS__); }()COMMENT
LOW3rdparty/doctest.h2721#define DOCTEST_CHECK_THROWS(...) [&] { try { __VA_ARGS__; return false; } catch (...) { return true; } }()COMMENT
LOW3rdparty/doctest.h2741COMMENT
LOW3rdparty/doctest.h2761#define DOCTEST_WARN_NE(...) DOCTEST_FUNC_EMPTYCOMMENT
LOW3rdparty/doctest.h2781#define DOCTEST_CHECK_UNARY_FALSE(...) DOCTEST_FUNC_EMPTYCOMMENT
LOW3rdparty/doctest.h2801COMMENT
LOW3rdparty/doctest.h2821COMMENT
LOW3rdparty/doctest.h2841#undef DOCTEST_REQUIRE_LECOMMENT
LOW3rdparty/doctest.h2861#define DOCTEST_CHECK_THROWS(...) DOCTEST_EXCEPTION_EMPTY_FUNCCOMMENT
LOW3rdparty/doctest.h2881#define DOCTEST_REQUIRE_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_EXCEPTION_EMPTY_FUNCCOMMENT
LOW3rdparty/doctest.h2901#define DOCTEST_FAST_REQUIRE_NE DOCTEST_REQUIRE_NECOMMENT
LOW3rdparty/doctest.h2921COMMENT
LOW3rdparty/doctest.h2941COMMENT
LOW3rdparty/doctest.h2961#define ADD_FAIL_CHECK_AT(file, line, ...) DOCTEST_ADD_FAIL_CHECK_AT(file, line, __VA_ARGS__)COMMENT
LOW3rdparty/doctest.h2981#define CHECK_NOTHROW(...) DOCTEST_CHECK_NOTHROW(__VA_ARGS__)COMMENT
LOW3rdparty/doctest.h3001#define CHECK_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_CHECK_THROWS_WITH_MESSAGE(expr, with, __VA_ARGS__)COMMENT
LOW3rdparty/doctest.h3021COMMENT
LOW3rdparty/doctest.h3041#define CHECK_UNARY(...) DOCTEST_CHECK_UNARY(__VA_ARGS__)COMMENT
LOW3rdparty/doctest.h3061#define FAST_CHECK_GE(...) DOCTEST_FAST_CHECK_GE(__VA_ARGS__)COMMENT
LOW3rdparty/doctest.h3161#endif // __BORLANDC__COMMENT
LOW3rdparty/doctest.h3181#define DOCTEST_LOCK_MUTEX(name) std::lock_guard<std::mutex> DOCTEST_ANONYMOUS(DOCTEST_ANON_LOCK_)(name);COMMENT
LOW3rdparty/doctest.h3201#include <sys/sysctl.h>COMMENT
LOW3rdparty/doctest.h3221#endifCOMMENT
LOW3rdparty/doctest.h3241COMMENT
LOW3rdparty/doctest.h3261#define DOCTEST_MULTI_LANE_ATOMICS_THREAD_LANES 32COMMENT
27 more matches not shown…
Unused Imports3 hits · 3 pts
SeverityFileLineSnippetContext
LOWtests/manual/perf-heaptrack.py17CODE
LOWtests/manual/perf-heaptrack.py19CODE
LOWtests/manual/perf-heaptrack.py23CODE
AI Slop Vocabulary1 hit · 3 pts
SeverityFileLineSnippetContext
MEDIUMsrc/analyze/accumulatedtracedata.cpp564// replace by std::identity once we can leverage C++20COMMENT
Fake / Example Data2 hits · 2 pts
SeverityFileLineSnippetContext
LOW3rdparty/robin-map/README.md255 map.insert({employee(1, "John Doe"), 2001});CODE
LOW3rdparty/robin-map/README.md256 map.insert({employee(2, "Jane Doe"), 2002});CODE