ZeroMQ core engine in C++, implements ZMTP/3.1
This report presents the forensic synthetic code analysis of zeromq/libzmq, a C++ project with 10,956 GitHub stars. SynthScan v2.0 examined 95,833 lines of code across 528 source files, recording 438 pattern matches distributed across 7 syntactic categories. The overall adjusted score of 4.9 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).
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.
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.
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.
The scanner identified 438 distinct pattern matches across 7 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.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | CMakeLists.txt | 1341 | set(PDB_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/bin") | COMMENT |
| LOW | Doxygen.cfg | 1 | # Doxyfile 1.8.11 | COMMENT |
| LOW | Doxygen.cfg | 21 | # that follow. The default is UTF-8 which is also the encoding used for all text | COMMENT |
| LOW | Doxygen.cfg | 61 | # option can be useful when feeding doxygen a huge amount of source files, where | COMMENT |
| LOW | Doxygen.cfg | 81 | # Esperanto, Farsi (Persian), Finnish, French, German, Greek, Hungarian, | COMMENT |
| LOW | Doxygen.cfg | 101 | # Note: If both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the | COMMENT |
| LOW | Doxygen.cfg | 121 | # The default value is: NO. | COMMENT |
| LOW | Doxygen.cfg | 141 | # Stripping is only done if one of the specified strings matches the left-hand | COMMENT |
| LOW | Doxygen.cfg | 161 | # If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter (but | COMMENT |
| LOW | Doxygen.cfg | 201 | # Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources | COMMENT |
| LOW | Doxygen.cfg | 221 | # The default value is: YES. | COMMENT |
| LOW | Doxygen.cfg | 241 | BUILTIN_STL_SUPPORT = YES | COMMENT |
| LOW | Doxygen.cfg | 261 | # member in the group (if any) for the other members of the group. By default | COMMENT |
| LOW | Doxygen.cfg | 281 | SUBGROUPING = YES | COMMENT |
| LOW | Doxygen.cfg | 301 | COMMENT | |
| LOW | Doxygen.cfg | 321 | # is 0..9, the default is 0, corresponding to a cache size of 2^16=65536 | COMMENT |
| LOW | Doxygen.cfg | 361 | # locally in source files will be included in the documentation. If set to NO, | COMMENT |
| LOW | Doxygen.cfg | 381 | # The default value is: NO. | COMMENT |
| LOW | Doxygen.cfg | 401 | # documentation blocks found inside the body of a function. If set to NO, these | COMMENT |
| LOW | Doxygen.cfg | 421 | CASE_SENSE_NAMES = YES | COMMENT |
| LOW | Doxygen.cfg | 461 | COMMENT | |
| LOW | Doxygen.cfg | 481 | # Note: If SORT_BRIEF_DOCS is set to NO this option is ignored for sorting brief | COMMENT |
| LOW | Doxygen.cfg | 501 | # list. | COMMENT |
| LOW | Doxygen.cfg | 541 | # The MAX_INITIALIZER_LINES tag determines the maximum number of lines that the | COMMENT |
| LOW | Doxygen.cfg | 561 | # (if specified). | COMMENT |
| LOW | Doxygen.cfg | 581 | FILE_VERSION_FILTER = | COMMENT |
| LOW | Doxygen.cfg | 601 | # LATEX_BIB_STYLE. To use this feature you need bibtex and perl available in the | COMMENT |
| LOW | Doxygen.cfg | 621 | # Tip: Turn warnings on while writing the documentation. | COMMENT |
| LOW | Doxygen.cfg | 641 | # This WARN_NO_PARAMDOC option can be enabled to get warnings for functions that | COMMENT |
| LOW | Doxygen.cfg | 661 | # The default value is: $file:$line: $text. | COMMENT |
| LOW | Doxygen.cfg | 681 | INPUT = include \ | COMMENT |
| LOW | Doxygen.cfg | 701 | # need to set EXTENSION_MAPPING for the extension otherwise the files are not | COMMENT |
| LOW | Doxygen.cfg | 721 | # The EXCLUDE tag can be used to specify files and/or directories that should be | COMMENT |
| LOW | Doxygen.cfg | 741 | # Note that the wildcards are matched against the file with absolute path, so to | COMMENT |
| LOW | Doxygen.cfg | 761 | EXAMPLE_PATH = tests perf | COMMENT |
| LOW | Doxygen.cfg | 781 | IMAGE_PATH = | COMMENT |
| LOW | Doxygen.cfg | 801 | COMMENT | |
| LOW | Doxygen.cfg | 821 | COMMENT | |
| LOW | Doxygen.cfg | 841 | #--------------------------------------------------------------------------- | COMMENT |
| LOW | Doxygen.cfg | 861 | # The default value is: YES. | COMMENT |
| LOW | Doxygen.cfg | 881 | # The default value is: YES. | COMMENT |
| LOW | Doxygen.cfg | 901 | # To use it do the following: | COMMENT |
| LOW | Doxygen.cfg | 921 | # The default value is: YES. | COMMENT |
| LOW | Doxygen.cfg | 941 | COLS_IN_ALPHA_INDEX = 4 | COMMENT |
| LOW | Doxygen.cfg | 961 | # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of | COMMENT |
| LOW | Doxygen.cfg | 981 | # the setting GENERATE_TREEVIEW). It is highly recommended to start with a | COMMENT |
| LOW | Doxygen.cfg | 1001 | # This tag requires that the tag GENERATE_HTML is set to YES. | COMMENT |
| LOW | Doxygen.cfg | 1021 | # standard style sheet and is therefore more robust against future updates. | COMMENT |
| LOW | Doxygen.cfg | 1041 | # will adjust the colors in the style sheet and background images according to | COMMENT |
| LOW | Doxygen.cfg | 1061 | # gradually make the output lighter, whereas values above 100 make the output | COMMENT |
| LOW | Doxygen.cfg | 1081 | # page has loaded. | COMMENT |
| LOW | Doxygen.cfg | 1101 | # generated that can be used as input for Apple's Xcode 3 integrated development | COMMENT |
| LOW | Doxygen.cfg | 1121 | COMMENT | |
| LOW | Doxygen.cfg | 1141 | COMMENT | |
| LOW | Doxygen.cfg | 1161 | COMMENT | |
| LOW | Doxygen.cfg | 1181 | COMMENT | |
| LOW | Doxygen.cfg | 1201 | # This tag requires that the tag GENERATE_HTMLHELP is set to YES. | COMMENT |
| LOW | Doxygen.cfg | 1221 | # The QHP_NAMESPACE tag specifies the namespace to use when generating Qt Help | COMMENT |
| LOW | Doxygen.cfg | 1241 | # filters). | COMMENT |
| LOW | Doxygen.cfg | 1261 | # The QHG_LOCATION tag can be used to specify the location of Qt's | COMMENT |
| 321 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | CMakeLists.txt | 758 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | CMakeLists.txt | 867 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | CMakeLists.txt | 882 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | CMakeLists.txt | 893 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | CMakeLists.txt | 905 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | CMakeLists.txt | 927 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | CMakeLists.txt | 1213 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | CMakeLists.txt | 1253 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | CMakeLists.txt | 1333 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | CMakeLists.txt | 1687 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | CMakeLists.txt | 1710 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM⚡ | Doxygen.cfg | 1828 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM⚡ | Doxygen.cfg | 1830 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM⚡ | Doxygen.cfg | 1840 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM⚡ | Doxygen.cfg | 1842 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 16 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 18 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 328 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 330 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 606 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 608 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 671 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 673 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 839 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 841 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 925 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 927 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 951 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 953 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1495 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1497 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1664 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1666 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1730 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1732 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1774 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1776 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1801 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1803 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1878 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1880 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1956 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 1958 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 2008 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | Doxygen.cfg | 2010 | #--------------------------------------------------------------------------- | COMMENT |
| MEDIUM | .readthedocs.yaml | 33 | # ------------ | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | Doxygen.cfg | 1011 | # it is more robust and this tag (HTML_STYLESHEET) will in the future become | COMMENT |
| MEDIUM | Doxygen.cfg | 1021 | # standard style sheet and is therefore more robust against future updates. | COMMENT |
| LOW | config.sh | 80 | # Linux headers are redefined, so we can't just add -I to the whole dir | COMMENT |
| MEDIUM | builds/android/android_build_helper.sh | 49 | # aforementioned upstream repository for the benefit of other users. | COMMENT |
| MEDIUM | src/gssapi_mechanism_base.hpp | 98 | // If true, use gss to encrypt messages. If false, only utilize gss for auth. | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | Doxygen.cfg | 696 | # If the value of the INPUT tag contains directories, you can use the | COMMENT |
| MEDIUM | Doxygen.cfg | 737 | # If the value of the INPUT tag contains directories, you can use the | COMMENT |
| MEDIUM | Doxygen.cfg | 763 | # If the value of the EXAMPLE_PATH tag contains directories, you can use the | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | builds/android/android_build_helper.sh | 466 | # Initialize env variable XXX_ROOT, given dependency name "xxx". | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | builds/android/build.sh | 35 | # Set this to 'no', to enable verbose ./configure | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | perf/generate_csv.sh | 8 | # Usage example: | COMMENT |