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

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
11 65 LinkImports call site: 00065 Module_HasExport
9 77 LinkImports call site: 00077 Module_HasExport
8 87 LinkImports call site: 00087 Module_HasExport
8 234 ReadLEB_i7 call site: 00234 EvaluateExpression
7 226 InitTableAndElements call site: 00226 EvaluateExpression
6 254 PrepareFoundFunction call site: 00254 CompileFunction
5 356 v_validate_body call site: 00356 ParseValueType
5 475 v_validate_body call site: 00475 v_pop_expect
4 482 v_validate_body call site: 00482 v_pop_expect
3 96 LinkImports call site: 00096 Module_HasExport
2 9 Environment_AddFuncType call site: 00009 m3_FreeEnvironment
2 243 m3_LoadModule call site: 00243 EvaluateExpression

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 m3_NewEnvironment [function] [call site] 00001
2 m3_Malloc_Impl [function] [call site] 00002
3 calloc [call site] 00003
2 AllocFuncType [function] [call site] 00004
3 m3_Malloc_Impl [function] [call site] 00005
2 Environment_AddFuncType [function] [call site] 00006
3 AreFuncTypesEqual [function] [call site] 00007
4 memcmp [call site] 00008
3 m3_Free_Impl [function] [call site] 00009
3 m3_Free_Impl [function] [call site] 00010
2 m3_FreeEnvironment [function] [call site] 00011
3 Environment_Release [function] [call site] 00012
4 m3_Free_Impl [function] [call site] 00013
4 FreeCodePages [function] [call site] 00014
5 m3_Free_Impl [function] [call site] 00015
3 m3_Free_Impl [function] [call site] 00016
1 m3_NewRuntime [function] [call site] 00017
2 m3_Malloc_Impl [function] [call site] 00018
2 m3_ResetErrorInfo [function] [call site] 00019
2 m3_Malloc_Impl [function] [call site] 00020
2 m3_Free_Impl [function] [call site] 00021
1 m3_SetGasLimit [function] [call site] 00022
1 m3_ParseModule [function] [call site] 00023
2 m3_Malloc_Impl [function] [call site] 00024
2 ReadLEB_u7 [function] [call site] 00027
3 ReadLebUnsigned [function] [call site] 00028
2 ReadLEB_u32 [function] [call site] 00029
3 ReadLebUnsigned [function] [call site] 00030
2 ParseModuleSection [function] [call site] 00031
2 m3_FreeModule [function] [call site] 00032
3 Module_FreeFunctions [function] [call site] 00033
4 Function_Release [function] [call site] 00034
5 FreeImportInfo [function] [call site] 00035
6 m3_Free_Impl [function] [call site] 00036
6 m3_Free_Impl [function] [call site] 00037
5 m3_Free_Impl [function] [call site] 00038
5 m3_Free_Impl [function] [call site] 00039
3 m3_Free_Impl [function] [call site] 00040
3 m3_Free_Impl [function] [call site] 00041
3 m3_Free_Impl [function] [call site] 00042
3 m3_Free_Impl [function] [call site] 00043
3 m3_Free_Impl [function] [call site] 00044
3 m3_Free_Impl [function] [call site] 00045
3 FreeImportInfo [function] [call site] 00046
3 m3_Free_Impl [function] [call site] 00047
3 m3_Free_Impl [function] [call site] 00048
3 m3_Free_Impl [function] [call site] 00049
3 m3_Free_Impl [function] [call site] 00050
3 m3_Free_Impl [function] [call site] 00051
3 m3_Free_Impl [function] [call site] 00052
3 FreeImportInfo [function] [call site] 00053
3 m3_Free_Impl [function] [call site] 00054
3 FreeImportInfo [function] [call site] 00055
3 m3_Free_Impl [function] [call site] 00056
3 m3_Free_Impl [function] [call site] 00057
3 m3_Free_Impl [function] [call site] 00058
3 m3_Free_Impl [function] [call site] 00059
3 m3_Free_Impl [function] [call site] 00060
3 FreeImportInfo [function] [call site] 00061
3 m3_Free_Impl [function] [call site] 00062
1 m3_LoadModule [function] [call site] 00063
2 LinkImports [function] [call site] 00064
3 m3_FindModule [function] [call site] 00065
4 strcmp [call site] 00066
3 Module_FindExportedFunction [function] [call site] 00067
4 strcmp [call site] 00068
4 Function_Implementation [function] [call site] 00069
3 Module_HasExport [function] [call site] 00070
4 strcmp [call site] 00071
4 strcmp [call site] 00072
4 strcmp [call site] 00073
4 strcmp [call site] 00074
4 strcmp [call site] 00075
3 Function_Implementation [function] [call site] 00076
3 m3_FindModule [function] [call site] 00077
3 Module_FindExportedMemory [function] [call site] 00078
4 strcmp [call site] 00079
3 Module_HasExport [function] [call site] 00080
3 Memory_PageSize [function] [call site] 00081
3 LimitsSatisfy [function] [call site] 00082
3 m3_Free_Impl [function] [call site] 00083
3 m3_Free_Impl [function] [call site] 00084
3 FreeImportInfo [function] [call site] 00085
3 m3_Free_Impl [function] [call site] 00086
3 m3_FindModule [function] [call site] 00087
3 Module_FindExportedTable [function] [call site] 00088
4 strcmp [call site] 00089
3 Module_HasExport [function] [call site] 00090
3 LimitsSatisfy [function] [call site] 00091
3 m3_Free_Impl [function] [call site] 00092
3 m3_Free_Impl [function] [call site] 00093
3 FreeImportInfo [function] [call site] 00094
3 m3_Free_Impl [function] [call site] 00095
3 m3_FindModule [function] [call site] 00096
3 Module_FindExportedGlobal [function] [call site] 00097
4 strcmp [call site] 00098
3 Module_HasExport [function] [call site] 00099
2 InitMemory [function] [call site] 00100
3 ResizeMemory [function] [call site] 00101
4 m3_Realloc_Impl [function] [call site] 00102
5 realloc [call site] 00103
3 Memory_PageSize [function] [call site] 00104
3 ResizeMemory [function] [call site] 00105
2 InitGlobals [function] [call site] 00106
3 EvaluateExpression [function] [call site] 00107
4 AcquireCodePage [function] [call site] 00108
5 AcquireCodePageWithCapacity [function] [call site] 00109
6 RemoveCodePageOfCapacity [function] [call site] 00110
7 NumFreeLines [function] [call site] 00111
6 Environment_AcquireCodePage [function] [call site] 00112
7 RemoveCodePageOfCapacity [function] [call site] 00113
6 NewCodePage [function] [call site] 00114
7 m3_Malloc_Impl [function] [call site] 00115
4 GetPagePC [function] [call site] 00116
4 CompileExpression [function] [call site] 00117
5 GetFuncTypeNumResults [function] [call site] 00118
5 CompileBlockStatements [function] [call site] 00119
6 Read_opcode [function] [call site] 00120
6 GetOpInfo [function] [call site] 00121
7 IsCoreOpcode [function] [call site] 00122
7 IsImplementedOp [function] [call site] 00123
6 m3Error [function] [call site] 00124
7 vsnprintf [call site] 00125
6 MeterOpcode [function] [call site] 00126
7 GetGasCost [function] [call site] 00127
7 CloseGasSegment [function] [call site] 00128
7 EmitOp [function] [call site] 00129
8 InvalidateFold [function] [call site] 00130
8 EnsureCodePageNumLines [function] [call site] 00131
9 NumFreeLines [function] [call site] 00132
9 AcquireCodePageWithCapacity [function] [call site] 00133
9 EmitWord_impl [function] [call site] 00134
9 op_Branch [function] [call site] 00135
9 GetPagePC [function] [call site] 00136
9 EmitWord_impl [function] [call site] 00137
9 ReleaseCodePage [function] [call site] 00138
10 ReleaseCodePageNoTrack [function] [call site] 00139
11 NumFreeLines [function] [call site] 00140
11 PushCodePage [function] [call site] 00141
8 EmitWord_impl [function] [call site] 00142
7 op_UseGas [function] [call site] 00143
7 GetPagePC [function] [call site] 00144
7 EmitConstant32 [function] [call site] 00145
8 EmitWord32 [function] [call site] 00146
7 IsGasSegmentEnd [function] [call site] 00147
7 CloseGasSegment [function] [call site] 00148
6 Compile_Operator [function] [call site] 00149
7 GetOpInfo [function] [call site] 00150
7 IsStackPolymorphic [function] [call site] 00151
7 GetStackTopType [function] [call site] 00152
8 GetStackTypeFromTop [function] [call site] 00153
7 GetStackTypeFromTop [function] [call site] 00154
7 GetStackTopType [function] [call site] 00155
7 IsIntType [function] [call site] 00157
7 PreserveRegisterIfOccupied [function] [call site] 00158
8 IsRegisterAllocated [function] [call site] 00160
8 GetRegisterStackIndex [function] [call site] 00161
8 DeallocateRegister [function] [call site] 00162
8 GetStackTypeFromBottom [function] [call site] 00163
8 AllocateSlots [function] [call site] 00164
9 AllocateSlotsWithinRange [function] [call site] 00165
10 GetTypeNumSlots [function] [call site] 00166
11 Is64BitType [function] [call site] 00167
10 AlignSlotToType [function] [call site] 00168
11 GetTypeNumSlots [function] [call site] 00169
10 MarkSlotsAllocated [function] [call site] 00170
11 MarkSlotAllocated [function] [call site] 00171
12 TouchSlot [function] [call site] 00172
8 EmitSlotOffset [function] [call site] 00174
9 EmitWord32 [function] [call site] 00175
7 IsStackTopInRegister [function] [call site] 00176
8 GetStackTopIndex [function] [call site] 00177
8 IsStackIndexInRegister [function] [call site] 00178
7 PreserveRegisterIfOccupied [function] [call site] 00179
7 IsStackTopInRegister [function] [call site] 00180
7 IsStackTopMinus1InRegister [function] [call site] 00181
8 GetStackTopIndex [function] [call site] 00182
8 IsStackIndexInRegister [function] [call site] 00183
7 IsStackTopMinus1InRegister [function] [call site] 00184
7 PreserveRegisterIfOccupied [function] [call site] 00185
7 EmitSlotNumOfStackTopAndPop [function] [call site] 00189
8 IsStackTopInSlot [function] [call site] 00190
9 IsStackTopInRegister [function] [call site] 00191
8 GetStackTopSlotNumber [function] [call site] 00192
9 GetStackTopIndex [function] [call site] 00193
8 EmitSlotOffset [function] [call site] 00194
8 Pop [function] [call site] 00195
9 IsRegisterSlotAlias [function] [call site] 00196
9 IsFpRegisterSlotAlias [function] [call site] 00197
9 DeallocateRegister [function] [call site] 00198
9 DeallocateSlot [function] [call site] 00199
10 GetTypeNumSlots [function] [call site] 00200
9 IsStackPolymorphic [function] [call site] 00201
7 EmitSlotNumOfStackTopAndPop [function] [call site] 00202
7 PushRegister [function] [call site] 00203
8 Push [function] [call site] 00205
9 IsRegisterSlotAlias [function] [call site] 00206
9 IsFpRegisterSlotAlias [function] [call site] 00207
9 AllocateRegister [function] [call site] 00208
7 GetStackTopIndex [function] [call site] 00209
5 MarkSlotAllocated [function] [call site] 00211
4 SizeOfType [function] [call site] 00213
4 ReleaseCodePage [function] [call site] 00214
4 Runtime_Release [function] [call site] 00215
5 ForEachModule [function] [call site] 00216
5 _ReleaseBorrowedSlots [function] [call site] 00217
5 ForEachModule [function] [call site] 00218
5 _FreeModule [function] [call site] 00219
6 m3_FreeModule [function] [call site] 00220
5 Environment_ReleaseCodePages [function] [call site] 00221
5 Environment_ReleaseCodePages [function] [call site] 00222
5 m3_Free_Impl [function] [call site] 00223
5 m3_Free_Impl [function] [call site] 00224
2 InitTableAndElements [function] [call site] 00225
3 m3_Malloc_Impl [function] [call site] 00226
3 EvaluateExpression [function] [call site] 00227
3 m3_Malloc_Impl [function] [call site] 00228
3 ResolveElements [function] [call site] 00229
4 Read_opcode [function] [call site] 00230
4 ReadLEB_u32 [function] [call site] 00231
4 Function_Implementation [function] [call site] 00232
4 ReadLEB_i7 [function] [call site] 00233
5 ReadLebSigned [function] [call site] 00234
4 NormalizeType [function] [call site] 00235
4 ReadLEB_u32 [function] [call site] 00236
4 Read_opcode [function] [call site] 00237
4 ReadLEB_u32 [function] [call site] 00238
4 Function_Implementation [function] [call site] 00239
3 EvaluateExpression [function] [call site] 00240
3 EvaluateExpression [function] [call site] 00241
3 ResolveElements [function] [call site] 00242
2 InitDataSegments [function] [call site] 00243
3 EvaluateExpression [function] [call site] 00244
3 EvaluateExpression [function] [call site] 00245
1 m3_FindFunction [function] [call site] 00246
2 ForEachModule [function] [call site] 00247
2 v_FindFunction [function] [call site] 00248
3 strcmp [call site] 00249
3 Function_Implementation [function] [call site] 00250
3 strcmp [call site] 00251
2 PrepareFoundFunction [function] [call site] 00253
3 CompileFunction [function] [call site] 00254
4 Function_Implementation [function] [call site] 00255
4 CompileFunction [function] [call site] 00256
5 GetFunctionImportModuleName [function] [call site] 00257
5 m3_GetFunctionName [function] [call site] 00258
6 GetFunctionNames [function] [call site] 00259
5 ValidateFunction [function] [call site] 00261
6 m3_Malloc_Impl [function] [call site] 00262
6 ReadLEB_u32 [function] [call site] 00263
6 ReadLEB_u32 [function] [call site] 00264
6 ReadLEB_u32 [function] [call site] 00265
6 ParseValueType [function] [call site] 00266
7 ReadLEB_i7 [function] [call site] 00267
7 NormalizeType [function] [call site] 00268
6 v_push_ctrl [function] [call site] 00269
6 v_validate_body [function] [call site] 00270
7 Read_opcode [function] [call site] 00271
7 v_unreachable [function] [call site] 00272
7 v_read_blocktype [function] [call site] 00273
8 ReadLebSigned [function] [call site] 00274
8 NormalizeType [function] [call site] 00275
7 v_pop_expect [function] [call site] 00278
7 v_push_ctrl [function] [call site] 00279
7 v_read_blocktype [function] [call site] 00281
7 v_pop_expect [function] [call site] 00282
7 ReadLEB_u32 [function] [call site] 00283
7 v_catch_clause [function] [call site] 00284
7 v_push_ctrl [function] [call site] 00291
7 ReadLEB_u32 [function] [call site] 00293
7 v_pop_expect [function] [call site] 00294
7 v_unreachable [function] [call site] 00295
7 v_pop_expect [function] [call site] 00296
7 v_unreachable [function] [call site] 00297
7 v_pop_ctrl [function] [call site] 00298
8 v_pop_expect [function] [call site] 00299
7 v_push_ctrl [function] [call site] 00300
7 v_pop_ctrl [function] [call site] 00302
7 ReadLEB_u32 [function] [call site] 00304
7 v_pop_labels [function] [call site] 00305
8 v_label_n [function] [call site] 00306
8 v_label_t [function] [call site] 00307
8 v_pop_expect [function] [call site] 00308
7 v_unreachable [function] [call site] 00309
7 ReadLEB_u32 [function] [call site] 00310
7 v_pop_expect [function] [call site] 00311
7 v_pop_labels [function] [call site] 00312
7 ReadLEB_u32 [function] [call site] 00317
7 ReadLEB_u32 [function] [call site] 00318
7 v_label_n [function] [call site] 00319
7 v_pop_expect [function] [call site] 00320
7 ReadLEB_u32 [function] [call site] 00321
7 v_label_n [function] [call site] 00322
7 v_label_t [function] [call site] 00323
7 v_pop_labels [function] [call site] 00325
7 v_unreachable [function] [call site] 00326
7 v_pop_expect [function] [call site] 00327
7 v_unreachable [function] [call site] 00328
7 ReadLEB_u32 [function] [call site] 00329
7 v_pop_expect [function] [call site] 00330
7 ReadLEB_u32 [function] [call site] 00332
7 ReadLEB_u32 [function] [call site] 00333
7 v_table_addrtype [function] [call site] 00334
8 Table_AddrType [function] [call site] 00335
7 v_pop_expect [function] [call site] 00336
7 v_pop_expect [function] [call site] 00337
7 ReadLEB_u32 [function] [call site] 00339
7 v_check_tail_results [function] [call site] 00340
7 v_pop_expect [function] [call site] 00341
7 v_unreachable [function] [call site] 00342
7 ReadLEB_u32 [function] [call site] 00343
7 ReadLEB_u32 [function] [call site] 00344
7 v_check_tail_results [function] [call site] 00345
7 v_table_addrtype [function] [call site] 00346
7 v_pop_expect [function] [call site] 00347
7 v_pop_expect [function] [call site] 00348
7 v_unreachable [function] [call site] 00349
7 v_pop_expect [function] [call site] 00351
7 v_pop_expect [function] [call site] 00353
7 IsRefType [function] [call site] 00354
7 ReadLEB_u32 [function] [call site] 00356
7 ParseValueType [function] [call site] 00357
7 v_pop_expect [function] [call site] 00358
7 v_pop_expect [function] [call site] 00359
7 v_pop_expect [function] [call site] 00360
7 ReadLEB_u32 [function] [call site] 00362
7 v_table_addrtype [function] [call site] 00363
7 v_pop_expect [function] [call site] 00364
7 v_pop_expect [function] [call site] 00365
7 v_pop_expect [function] [call site] 00366
7 ReadLEB_i7 [function] [call site] 00368
7 NormalizeType [function] [call site] 00369
7 IsRefType [function] [call site] 00370
7 IsRefType [function] [call site] 00373
7 ReadLEB_u32 [function] [call site] 00375
7 Module_IsFunctionDeclared [function] [call site] 00376
7 ReadLEB_u32 [function] [call site] 00378
7 ReadLEB_u32 [function] [call site] 00380
7 v_pop_expect [function] [call site] 00381
7 ReadLEB_u32 [function] [call site] 00382
7 v_pop_expect [function] [call site] 00383
7 ReadLEB_u32 [function] [call site] 00385
7 ReadLEB_u32 [function] [call site] 00387
7 v_pop_expect [function] [call site] 00388
7 ReadMemoryArg [function] [call site] 00389
8 ReadLEB_u32 [function] [call site] 00390
8 ReadLEB_u32 [function] [call site] 00391
8 ReadLebUnsigned [function] [call site] 00392
7 v_max_align [function] [call site] 00393
7 v_has_memory_idx [function] [call site] 00394
7 v_offset_in_range [function] [call site] 00395
8 v_memory_addrtype [function] [call site] 00396
9 Memory_AddrType [function] [call site] 00397
7 v_memory_addrtype [function] [call site] 00398
7 v_pop_expect [function] [call site] 00399
7 ReadMemoryArg [function] [call site] 00401
7 v_max_align [function] [call site] 00402
7 v_has_memory_idx [function] [call site] 00403
7 v_offset_in_range [function] [call site] 00404
7 v_pop_expect [function] [call site] 00405
7 v_memory_addrtype [function] [call site] 00406
7 v_pop_expect [function] [call site] 00407
7 ReadLEB_u32 [function] [call site] 00408
7 v_has_memory_idx [function] [call site] 00409
7 v_memory_addrtype [function] [call site] 00410
7 ReadLEB_u32 [function] [call site] 00412
7 v_has_memory_idx [function] [call site] 00413
7 v_memory_addrtype [function] [call site] 00414
7 v_pop_expect [function] [call site] 00415
7 v_memory_addrtype [function] [call site] 00416
7 ReadLEB_i32 [function] [call site] 00418
8 ReadLebSigned [function] [call site] 00419
7 ReadLEB_i64 [function] [call site] 00421
8 ReadLebSigned [function] [call site] 00422
7 ReadLEB_u32 [function] [call site] 00468
7 ReadLEB_u32 [function] [call site] 00473
7 ReadLEB_u32 [function] [call site] 00474
7 v_has_memory_idx [function] [call site] 00475
7 v_pop_expect [function] [call site] 00476
7 v_pop_expect [function] [call site] 00477
7 v_memory_addrtype [function] [call site] 00478
7 v_pop_expect [function] [call site] 00479
7 ReadLEB_u32 [function] [call site] 00480
7 ReadLEB_u32 [function] [call site] 00481
7 ReadLEB_u32 [function] [call site] 00482
7 v_pop_expect [function] [call site] 00483
7 v_pop_expect [function] [call site] 00484
7 v_table_addrtype [function] [call site] 00485
7 v_pop_expect [function] [call site] 00486
7 v_table_addrtype [function] [call site] 00487
7 v_table_addrtype [function] [call site] 00488
7 v_pop_expect [function] [call site] 00489
7 v_pop_expect [function] [call site] 00490
7 v_pop_expect [function] [call site] 00491
7 ReadLEB_u32 [function] [call site] 00492
7 ReadLEB_u32 [function] [call site] 00493
7 v_table_addrtype [function] [call site] 00494
7 v_pop_expect [function] [call site] 00496
7 v_pop_expect [function] [call site] 00497
7 v_pop_expect [function] [call site] 00499
7 v_pop_expect [function] [call site] 00500
7 v_pop_expect [function] [call site] 00501
7 ReadLEB_u32 [function] [call site] 00502
7 ReadLEB_u32 [function] [call site] 00503
7 v_has_memory_idx [function] [call site] 00504
7 v_memory_addrtype [function] [call site] 00505
7 v_memory_addrtype [function] [call site] 00506
7 v_pop_expect [function] [call site] 00507
7 v_pop_expect [function] [call site] 00508
7 v_pop_expect [function] [call site] 00509
7 ReadLEB_u32 [function] [call site] 00510
7 v_has_memory_idx [function] [call site] 00511
7 v_memory_addrtype [function] [call site] 00512
7 v_pop_expect [function] [call site] 00513
7 v_pop_expect [function] [call site] 00514
7 v_pop_expect [function] [call site] 00515
5 ReadLEB_u32 [function] [call site] 00516
5 AcquireCompilationCodePage [function] [call site] 00517
6 AcquireCodePage [function] [call site] 00518
5 GetPagePC [function] [call site] 00519
5 GetFunctionNumReturns [function] [call site] 00520
5 GetFunctionNumArgs [function] [call site] 00521
5 MarkSlotAllocated [function] [call site] 00522
5 GetFunctionArgType [function] [call site] 00523
6 GetFunctionNumArgs [function] [call site] 00524
5 PushAllocatedSlot [function] [call site] 00525
6 _PushAllocatedSlotAndEmit [function] [call site] 00526
7 AllocateSlots [function] [call site] 00527
7 EmitSlotOffset [function] [call site] 00529
5 CompileLocals [function] [call site] 00530
6 ReadLEB_u32 [function] [call site] 00531
6 ReadLEB_u32 [function] [call site] 00532
6 ParseValueType [function] [call site] 00533
6 PushAllocatedSlot [function] [call site] 00534
5 GetMaxUsedSlotPlusOne [function] [call site] 00535
6 IsSlotAllocated [function] [call site] 00536
5 ReserveConstants [function] [call site] 00537
6 GetTypeNumSlots [function] [call site] 00538
6 AlignSlotToType [function] [call site] 00539
5 EmitPointer [function] [call site] 00542
6 GetPagePC [function] [call site] 00543
6 EmitWord_impl [function] [call site] 00544
5 CompileBlockStatements [function] [call site] 00545
5 m3_CopyMem [function] [call site] 00546
6 m3_Malloc_Impl [function] [call site] 00547
5 ReleaseCompilationCodePage [function] [call site] 00548
6 ReleaseCodePage [function] [call site] 00549
1 m3_CallV [function] [call site] 00550
2 m3_CallVL [function] [call site] 00551
3 checkStartFunction [function] [call site] 00552
4 m3_RunStart [function] [call site] 00553
3 GetStackPointerForArgs [function] [call site] 00554
3 RunCodeChecked [function] [call site] 00555
4 FreeExceptions [function] [call site] 00557
5 m3_Free_Impl [function] [call site] 00558
1 m3_FreeRuntime [function] [call site] 00559
2 m3_PrintProfilerInfo [function] [call site] 00560
2 Runtime_Release [function] [call site] 00561
2 m3_Free_Impl [function] [call site] 00562
1 m3_FreeEnvironment [function] [call site] 00563