Fuzz introspector
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues
Project coverage
Per-fuzzer coverage

Table of contents

Project overview: xs
High level conclusions
Reachability and coverage overview
Fuzzers overview
Project functions overview
Fuzzer details
Fuzzer: xst_jsonparse
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Fuzzer: xst
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Analyses and suggestions
Optimal target analysis
Remaining optimal interesting functions
All functions overview
Fuzz engine guidance
xs/tools/xstFuzz.c
Dictionary
Fuzzer function priority
xs/tools/xstFuzz.c
Dictionary
Fuzzer function priority
Runtime coverage analysis
Complex functions with low coverage
Files and Directories in report
Files in report
Directories in report
Metadata section
Report generation date: 2026-07-16

Project overview: xs

High level conclusions

Reachability and coverage overview

Functions statically reachable by fuzzers
63.0%
1641 / 2603
Cyclomatic complexity statically reachable by fuzzers
61.0%
12411 / 20239
Runtime code coverage of functions
73.0%
1911 / 2603

Warning: The number of runtime covered functions are larger than the number of reachable functions. This means that Fuzz Introspector found there are more functions covered at runtime than what is considered reachable based on the static analysis. This is a limitation in the analysis as anything covered at runtime is by definition reachable by the fuzzers.
This is likely due to a limitation in the static analysis. In this case, the count of functions covered at runtime is the true value, which means this is what should be considered "achieved" by the fuzzer.

Use the project functions table below to query all functions that were not covered at runtime.

Fuzzers overview

Fuzzer Fuzzer filename Functions Reached Functions unreached Fuzzer depth Files reached Basic blocks reached Cyclomatic complexity Details
xst_jsonparse xs/tools/xstFuzz.c 1677 1006 45 80 33631 12314 xstFuzz.c
xst xs/tools/xstFuzz.c 1705 980 45 81 34257 12539 xstFuzz.c

Project functions overview

The following table shows data about each function in the project. The functions included in this table correspond to all functions that exist in the executables of the fuzzers. As such, there may be functions that are from third-party libraries.

For further technical details on the meaning of columns in the below table, please see the Glossary .

Func name Functions filename Args Function call depth Reached by Fuzzers Runtime reached by Fuzzers Combined reached by Fuzzers Fuzzers runtime hit Func lines hit % I Count BB Count Cyclomatic complexity Functions reached Reached by functions Accumulated cyclomatic complexity Undiscovered complexity

Fuzzer details

Fuzzer: xst_jsonparse

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Full calltree

Call tree overview bitmap:

The distribution of callsites in terms of coloring is
Color Runtime hitcount Callsite count Percentage
red 0 10082 84.6%
gold [1:9] 3 0.02%
yellow [10:29] 0 0.0%
greenyellow [30:49] 2 0.01%
lawngreen 50+ 1825 15.3%
All colors 11912 100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
2015 2230 fxParseUnicodeEscape call site: 02230 fxRunScript
522 10878 fxBuildModule call site: 10878 fxRunImportNow
446 1068 fxNewName call site: 01068 fxToInstance
331 1515 fxLogout call site: 01515 fxSetBreakpointCondition
303 1919 fxBuildGlobal call site: 01919 fxParseScript
207 580 fxDebugThrow call site: 00580 fxDebugLoop
127 6358 fxBuildArray call site: 06358 fx_Array_fromAsync_onIterated
126 11415 fxNewGlobalInstance call site: 11415 fxThrowMessage
117 8719 fxBuildJSON call site: 08719 fxStringifyJSON
96 7851 fxBuildRegExp call site: 07851 fxSetID
87 9562 fxBuildDataView call site: 09562 fx_TypedArray_from_object
80 5348 fxBuildGenerator call site: 05348 fx_AsyncGenerator_prototype_aux

Runtime coverage analysis

Covered functions
236
Functions that are reachable but not covered
1462
Reachable functions
1677
Percentage of reachable functions covered
12.82%
NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.
Function name source code lines source lines hit percentage hit

Files reached

filename functions hit
xs/tools/xstFuzz.c 12
xs/sources/xsAPI.c 71
xs/tools/xst.c 15
xs/sources/xsMemory.c 29
xs/sources/xsDebug.c 67
xs/sources/xsCommon.c 24
xs/sources/xsdtoa.c 36
xs/sources/xsPlatforms.c 6
xs/sources/xsString.c 73
xs/sources/xsType.c 16
xs/sources/xsProfile.c 16
xs/sources/xsSymbol.c 22
xs/sources/xsAll.c 13
xs/sources/xsProperty.c 18
xs/sources/xsGlobal.c 16
xs/sources/xsFunction.c 16
xs/sources/xsObject.c 40
xs/sources/xsNumber.c 19
xs/sources/xsDataView.c 152
xs/sources/xsRun.c 34
xs/sources/xsBoolean.c 6
xs/sources/xsArray.c 79
xs/sources/xsPromise.c 34
xs/tools/fdlibm/s_trunc.c 1
xs/tools/fdlibm/e_fmod.c 1
xs/tools/fdlibm/math_private.h 2
xs/sources/xsMath.c 46
xs/tools/fdlibm/e_pow.c 1
xs/tools/fdlibm/s_scalbn.c 1
xs/sources/xsGenerator.c 61
xs/sources/xsModule.c 64
xs/sources/xsScript.c 11
xs/sources/xsTree.c 6
xs/sources/xsLexical.c 31
xs/sources/xsBigInt.c 46
xs/tools/fdlibm/e_log.c 1
xs/tools/fdlibm/s_ceil.c 1
xs/sources/xsSyntaxical.c 103
xs/sources/xsre.c 67
xs/sources/xsScope.c 4
xs/sources/xsCode.c 7
xs/sources/xsArguments.c 2
xs/sources/xsRegExp.c 30
xs/tools/fdlibm/s_log1p.c 1
xs/sources/xsDate.c 69
xs/tools/fdlibm/e_acos.c 1
xs/tools/fdlibm/e_acosh.c 1
xs/tools/fdlibm/e_asin.c 1
xs/tools/fdlibm/s_asinh.c 1
xs/tools/fdlibm/s_atan.c 1
xs/tools/fdlibm/e_atanh.c 1
xs/tools/fdlibm/e_atan2.c 1
xs/tools/fdlibm/s_cbrt.c 1
xs/tools/fdlibm/s_cos.c 1
xs/tools/fdlibm/k_cos.c 1
xs/tools/fdlibm/e_rem_pio2.c 1
xs/tools/fdlibm/k_rem_pio2.c 1
xs/tools/fdlibm/k_sin.c 1
xs/tools/fdlibm/e_cosh.c 1
xs/tools/fdlibm/s_expm1.c 1
xs/tools/fdlibm/e_exp.c 1
xs/tools/fdlibm/k_exp.c 2
xs/tools/fdlibm/e_hypot.c 1
xs/tools/fdlibm/e_log10.c 1
xs/tools/fdlibm/k_log.h 1
xs/tools/fdlibm/s_sin.c 1
xs/tools/fdlibm/e_sinh.c 1
xs/sources/xsum.c 5
xs/tools/fdlibm/s_tan.c 1
xs/tools/fdlibm/k_tan.c 1
xs/tools/fdlibm/s_tanh.c 1
xs/sources/xsError.c 35
xs/sources/xsJSON.c 22
xs/sources/xsAtomics.c 29
xs/sources/xsProxy.c 23
xs/sources/xsMapSet.c 85
xs/tools/xstBundle.c 2
xs/sources/xsSourceMap.c 3
modules/data/text/decoder/textdecoder.c 7
xs/sources/xsmc.c 7

Fuzzer: xst

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Full calltree

Call tree overview bitmap:

The distribution of callsites in terms of coloring is
Color Runtime hitcount Callsite count Percentage
red 0 2063 16.9%
gold [1:9] 846 6.93%
yellow [10:29] 887 7.26%
greenyellow [30:49] 387 3.17%
lawngreen 50+ 8023 65.7%
All colors 12206 100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
160 1354 fxRunID call site: 01354 fxListGlobal
154 633 fxIDToString call site: 00633 fxEchoInstance
90 3861 fxParserTree call site: 03861 fxJSONModule
75 6410 fxThrow call site: 06410 fx_Array_fromAsync_onIterated
74 1614 fxRemapScript call site: 01614 fxSetBreakpointHitCount
73 1515 fxLogout call site: 01515 fxSetBreakpoint
68 12045 fuzz_oss call site: 12045 fxVerifyInstance
66 1689 fxRunID call site: 01689 fxDebugCommand
61 11191 fxLoadModule call site: 11191 fxLoadScript
36 11647 fxBuildModule call site: 11647 fxThrowMessage
30 600 fxGetKeyName call site: 00600 fxListLocal
29 6358 fxBuildArray call site: 06358 fxNewPromiseCapability

Runtime coverage analysis

Covered functions
1915
Functions that are reachable but not covered
219
Reachable functions
1705
Percentage of reachable functions covered
87.16%
NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.
Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.
Function name source code lines source lines hit percentage hit

Files reached

filename functions hit
xs/tools/xstFuzz.c 15
xs/sources/xsAPI.c 74
xs/tools/xst.c 18
xs/sources/xsMemory.c 29
xs/sources/xsDebug.c 67
xs/sources/xsCommon.c 24
xs/sources/xsdtoa.c 36
xs/sources/xsPlatforms.c 6
xs/sources/xsString.c 73
xs/sources/xsType.c 16
xs/sources/xsProfile.c 16
xs/sources/xsSymbol.c 22
xs/sources/xsAll.c 13
xs/sources/xsProperty.c 18
xs/sources/xsGlobal.c 16
xs/sources/xsFunction.c 16
xs/sources/xsObject.c 40
xs/sources/xsNumber.c 19
xs/sources/xsDataView.c 152
xs/sources/xsRun.c 34
xs/sources/xsBoolean.c 6
xs/sources/xsArray.c 79
xs/sources/xsPromise.c 35
xs/tools/fdlibm/s_trunc.c 1
xs/tools/fdlibm/e_fmod.c 1
xs/tools/fdlibm/math_private.h 2
xs/sources/xsMath.c 48
xs/tools/fdlibm/e_pow.c 1
xs/tools/fdlibm/s_scalbn.c 1
xs/sources/xsGenerator.c 61
xs/sources/xsModule.c 64
xs/sources/xsScript.c 11
xs/sources/xsTree.c 6
xs/sources/xsLexical.c 31
xs/sources/xsBigInt.c 46
xs/tools/fdlibm/e_log.c 1
xs/tools/fdlibm/s_ceil.c 1
xs/sources/xsSyntaxical.c 103
xs/sources/xsre.c 67
xs/sources/xsScope.c 4
xs/sources/xsCode.c 7
xs/sources/xsArguments.c 2
xs/sources/xsRegExp.c 30
xs/tools/fdlibm/s_log1p.c 1
xs/sources/xsDate.c 70
xs/tools/fdlibm/e_acos.c 1
xs/tools/fdlibm/e_acosh.c 1
xs/tools/fdlibm/e_asin.c 1
xs/tools/fdlibm/s_asinh.c 1
xs/tools/fdlibm/s_atan.c 1
xs/tools/fdlibm/e_atanh.c 1
xs/tools/fdlibm/e_atan2.c 1
xs/tools/fdlibm/s_cbrt.c 1
xs/tools/fdlibm/s_cos.c 1
xs/tools/fdlibm/k_cos.c 1
xs/tools/fdlibm/e_rem_pio2.c 1
xs/tools/fdlibm/k_rem_pio2.c 1
xs/tools/fdlibm/k_sin.c 1
xs/tools/fdlibm/e_cosh.c 1
xs/tools/fdlibm/s_expm1.c 1
xs/tools/fdlibm/e_exp.c 1
xs/tools/fdlibm/k_exp.c 2
xs/tools/fdlibm/e_hypot.c 1
xs/tools/fdlibm/e_log10.c 1
xs/tools/fdlibm/k_log.h 1
xs/tools/fdlibm/s_sin.c 1
xs/tools/fdlibm/e_sinh.c 1
xs/sources/xsum.c 5
xs/tools/fdlibm/s_tan.c 1
xs/tools/fdlibm/k_tan.c 1
xs/tools/fdlibm/s_tanh.c 1
xs/sources/xsError.c 35
xs/sources/xsJSON.c 22
xs/sources/xsAtomics.c 29
xs/sources/xsProxy.c 23
xs/sources/xsMapSet.c 85
xs/tools/xstBundle.c 2
xs/sources/xsSourceMap.c 3
modules/data/text/decoder/textdecoder.c 7
xs/sources/xsmc.c 7
xs/sources/xsLockdown.c 15

Analyses and suggestions

Optimal target analysis

Remaining optimal interesting functions

The following table shows a list of functions that are optimal targets. Optimal targets are identified by finding the functions that in combination, yield a high code coverage.

Func name Functions filename Arg count Args Function depth hitcount instr count bb count cyclomatic complexity Reachable functions Incoming references total cyclomatic complexity Unreached complexity
omain /src/moddable/xs/tools/xst.c 2 ['int', 'N/A'] 84 0 1498 176 55 1924 0 15587 3075
yaml_emitter_dump /src/moddable/xs/tools/yaml/dumper.c 2 ['N/A', 'N/A'] 13 0 234 31 10 74 0 1284 1242
fxFunctionNodeCode /src/moddable/xs/sources/xsCode.c 2 ['N/A', 'N/A'] 12 0 762 98 35 42 0 201 123
fxArrayDefineOwnProperty /src/moddable/xs/sources/xsArray.c 6 ['N/A', 'N/A', 'int', 'int', 'N/A', 'char'] 30 0 202 27 11 323 0 3375 106
fxBodyNodeCode /src/moddable/xs/sources/xsCode.c 2 ['N/A', 'N/A'] 12 0 108 13 6 44 0 176 81
fxScopeLookup /src/moddable/xs/sources/xsScope.c 3 ['N/A', 'N/A', 'int'] 10 0 435 70 25 18 9 104 61
fxDefinePrivateProperty /src/moddable/xs/sources/xsProperty.c 6 ['N/A', 'N/A', 'N/A', 'int', 'N/A', 'char'] 16 0 893 134 55 90 0 859 55

Implementing fuzzers that target the above functions will improve reachability such that it becomes:

Functions statically reachable by fuzzers
75.0%
1951 / 2603
Cyclomatic complexity statically reachable by fuzzers
84.0%
17097 / 20239

All functions overview

If you implement fuzzers for these functions, the status of all functions in the project will be:

Func name Functions filename Args Function call depth Reached by Fuzzers Runtime reached by Fuzzers Combined reached by Fuzzers Fuzzers runtime hit Func lines hit % I Count BB Count Cyclomatic complexity Functions reached Reached by functions Accumulated cyclomatic complexity Undiscovered complexity

Fuzz engine guidance

This sections provides heuristics that can be used as input to a fuzz engine when running a given fuzz target. The current focus is on providing input that is usable by libFuzzer.

xs/tools/xstFuzz.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag


Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name 

-focus_function=['fxParseUnicodeEscape', 'fxBuildModule', 'fxNewName', 'fxLogout', 'fxBuildGlobal', 'fxDebugThrow', 'fxBuildArray', 'fxNewGlobalInstance', 'fxBuildJSON', 'fxBuildRegExp']

xs/tools/xstFuzz.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag


Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name 

-focus_function=['fxRunID', 'fxIDToString', 'fxParserTree', 'fxThrow', 'fxRemapScript', 'fxLogout', 'fuzz_oss', 'fxLoadModule', 'fxBuildModule']

Runtime coverage analysis

This section shows analysis of runtime coverage data.

For futher technical details on how this section is generated, please see the Glossary .

Complex functions with low coverage

Func name Function total lines Lines covered at runtime percentage covered Reached by fuzzers
fxCheckProfiler 42 4 9.523% ['xst', 'xst_jsonparse']
_xsmcGetBuffer 47 13 27.65% ['xst', 'xst_jsonparse']
fxConnect 72 4 5.555% ['xst', 'xst_jsonparse']
fxRunTest 38 10 26.31% ['xst', 'xst_jsonparse']
fxNotifySharedChunk 45 18 40.0% ['xst', 'xst_jsonparse']
fxWaitSharedChunk 68 27 39.70% ['xst', 'xst_jsonparse']
fx_BigInt_fromArrayBuffer 56 28 50.0% ['xst', 'xst_jsonparse']
fx_ArrayBuffer_prototype_concat 52 22 42.30% ['xst', 'xst_jsonparse']
fx_TypedArray_prototype_set 76 30 39.47% ['xst', 'xst_jsonparse']
fx_TypedArray_prototype_toLocaleString 45 19 42.22% ['xst', 'xst_jsonparse']
fxTypedArrayDefineOwnProperty 48 26 54.16% ['xst']
fxDebugLoop 51 4 7.843% ['xst', 'xst_jsonparse']
fxAsyncDisposableStackResolve 69 22 31.88% ['xst', 'xst_jsonparse']
fxLinkCircularities 148 47 31.75% ['xst', 'xst_jsonparse']
fxLinkTransfer 69 26 37.68% ['xst', 'xst_jsonparse']
fxRunImportAux 51 26 50.98% ['xst', 'xst_jsonparse']
fxWithAttributes 43 10 23.25% ['xst', 'xst_jsonparse']
fxCheckUniqueProperty 33 2 6.060% ['xst', 'xst_jsonparse']
fxCheckNativeConstructor 35 11 31.42% ['xst', 'xst_jsonparse']

Files and Directories in report

This section shows which files and directories are considered in this report. The main reason for showing this is fuzz introspector may include more code in the reasoning than is desired. This section helps identify if too many files/directories are included, e.g. third party code, which may be irrelevant for the threat model. In the event too much is included, fuzz introspector supports a configuration file that can exclude data from the report. See the following link for more information on how to create a config file: link

Files in report

Source file Reached by Covered by
[] []
/src/moddable/xs/sources/xsScope.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsPromise.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/k_cos.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsdtoa.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/yaml/reader.c [] []
/src/moddable/xs/sources/xsMarshall.c [] []
/src/moddable/xs/tools/fdlibm/e_acosh.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/yaml/scanner.c [] []
/src/moddable/xs/tools/yaml/api.c [] []
/src/moddable/xs/tools/fdlibm/e_atan2.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsDebug.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsModule.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/e_acos.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/e_pow.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsMapSet.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/e_hypot.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsProxy.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsum.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/s_asinh.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsLexical.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/e_asin.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/k_sin.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsDate.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsProperty.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/s_cos.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsTree.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/k_rem_pio2.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/s_atan.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsJSON.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsPlatforms.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsGenerator.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsAPI.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsArray.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsString.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/e_sinh.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/e_log.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsArguments.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/modules/data/text/decoder/textdecoder.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsType.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/e_log10.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/modules/data/base64/modBase64.c [] []
/src/moddable/xs/tools/fdlibm/k_exp.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsGlobal.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsRegExp.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsScript.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsSymbol.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsMath.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/xst.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/s_expm1.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsDataView.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/math_private.h ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/s_tanh.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/xstFuzz.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/s_sin.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/xst262.c [] []
/src/moddable/xs/tools/yaml/loader.c [] []
/src/moddable/xs/tools/fdlibm/e_exp.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsAll.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/xstBundle.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/e_atanh.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsSyntaxical.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/s_scalbn.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/s_ceil.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsCode.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsBoolean.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/modules/data/text/encoder/textencoder.c [] []
/src/moddable/xs/sources/xsSourceMap.c ['xst_jsonparse', 'xst'] []
/src/moddable/xs/sources/xsCommon.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsMemory.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsProfile.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/yaml/writer.c [] []
/src/moddable/xs/sources/xsObject.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsBigInt.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/k_log.h ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsAtomics.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/s_tan.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsNumber.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/yaml/dumper.c [] []
/src/moddable/xs/tools/fdlibm/s_trunc.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/yaml/emitter.c [] []
/src/moddable/xs/sources/xsre.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/e_cosh.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsError.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsmc.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/fdlibm/s_cbrt.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/e_fmod.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/e_rem_pio2.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/tools/fdlibm/s_log1p.c ['xst_jsonparse', 'xst'] ['xst']
/src/moddable/xs/sources/xsFunction.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/sources/xsRun.c ['xst_jsonparse', 'xst'] ['xst_jsonparse', 'xst']
/src/moddable/xs/tools/yaml/parser.c [] []
/src/moddable/xs/sources/xsLockdown.c ['xst'] ['xst']
/src/moddable/xs/tools/fdlibm/k_tan.c ['xst_jsonparse', 'xst'] ['xst']

Directories in report

Directory
/src/moddable/modules/data/base64/
/src/moddable/xs/tools/yaml/
/src/moddable/xs/sources/
/src/moddable/xs/tools/fdlibm/
/src/moddable/modules/data/text/encoder/
/src/moddable/modules/data/text/decoder/
/src/moddable/xs/tools/

Metadata section

This sections shows the raw data that is used to produce this report. This is mainly used for further processing and developer debugging.

Fuzzer Calltree file Program data file Coverage file
xst_jsonparse fuzzerLogFile-0-nL0rTXZK4X.data fuzzerLogFile-0-nL0rTXZK4X.data.yaml xst_jsonparse.covreport
xst fuzzerLogFile-0-nAbbaMDs6w.data fuzzerLogFile-0-nAbbaMDs6w.data.yaml xst.covreport