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add license + ai generated readme (to be refined)
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‎.gitignore‎

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# Prerequisites
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*.d
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# Compiled Object files
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*.slo
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*.lo
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*.o
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*.obj
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# Precompiled Headers
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*.gch
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*.pch
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# Linker files
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*.ilk
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# Debugger Files
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*.pdb
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# Compiled Dynamic libraries
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*.so
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*.dylib
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*.dll
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*.so.*
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# Fortran module files
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*.mod
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*.smod
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# Compiled Static libraries
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*.lai
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*.la
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*.a
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*.lib
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# Executables
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*.exe
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*.out
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*.app
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# Build directories
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build/
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Build/
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build-*/
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# CMake generated files
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CMakeFiles/
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CMakeCache.txt
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cmake_install.cmake
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Makefile
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install_manifest.txt
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compile_commands.json
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# Temporary files
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*.tmp
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*.log
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*.bak
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*.swp
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# vcpkg
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vcpkg_installed/
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# debug information files
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*.dwo
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# test output & cache
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Testing/
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.cache/

‎LICENSE‎

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Apache License
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‎README.md‎

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# gmsv_segfault
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VERY EXPERIMENTAL (and old) Garry's Mod server binary module for crash signal handling and debugging.
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Catches fatal signals (SIGSEGV, SIGABRT, SIGBUS, SIGILL, SIGQUIT, SIGHUP, SIGUSR1, SIGUSR2) and dumps:
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- Signal info and fault address
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- CPU register state
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- C++ backtrace via libunwind (with demangled symbols)
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- Lua stack trace and stack contents
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- Thread crash detection
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Also includes physics crash recovery, Lua watchdog (SIGUSR1) to break infinite loops, and Ctrl+C guard.
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Output is written to `logs/<timestamp>.log` with a symlink at `logs/latest.log`.
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```sh
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apt-get install libunwind-dev binutils-dev liblzma-dev
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```
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Build with premake5.
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Build scripts: [github.com/Cynosphere/gbins](https://github.com/Cynosphere/gbins)
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Originally extracted from [gitlab.com/metastruct/internal/gbins](https://gitlab.com/metastruct/internal/gbins) (internal)
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Example crash dump: [example_crash.log](example_crash.log)

‎example_crash.log‎

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START:1740881496
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CRASH: Signal=11,1
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TIME:1741005004
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Fault=0x6 Caller=0xf37335ba
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REG: gs 63 fs: 0 es: 2b ds: 2b edi: 3c4cdd64 esi: 0 ebp: ffff85c8 esp: ffff8590 ebx: ffffffff edx: 4795a1c0 ecx: 3221ec80
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REG: eax: 5092b8f0 trap: 14 err: 4 eip: f37335ba cs: 23 flag: 210246 sp: ffff8590 ss: 2b cr2: 6
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TRACE
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1 0xdefef8ef 0xdf012e80 ERROR_SIGNAL_HANDLER_FUNC(int, siginfo_t*, void*) +0x6ff @ gmsv_segfault_linux.dll +0x68ef
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2 0xf7fc75a0 0xdf0131c0 ? +0x6ff (SF) @ linux-gate.so.1 +0x5a0
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3 0xf37335ba 0xffff8590 IVP_Simulation_Unit::remove_controller_of_core(IVP_Core*, IVP_Controller*) +0x4a @ vphysics_srv.so +0x1005ba
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4 0xf373377d 0xffff85d0 IVP_Core::rem_core_controller(IVP_Controller*) +0x8d @ vphysics_srv.so +0x10077d
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5 0xf37340fe 0xffff8600 IVP_Controller_Manager::remove_controller_from_environment(IVP_Controller_Dependent*, IVP_BOOL) +0x4e @ vphysics_srv.so +0x1010fe
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6 0xf36ab5c7 0xffff8640 hk_Local_Constraint_System::deactivate() +0x27 @ vphysics_srv.so +0x785c7
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7 0xf36ab6d8 0xffff8660 hk_Local_Constraint_System::add_constraint(hk_Constraint*, int) +0xf8 @ vphysics_srv.so +0x786d8
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8 0xf36aea24 0xffff86a0 hk_Constraint::hk_Constraint(hk_Local_Constraint_System*, hk_Rigid_Body*, hk_Rigid_Body*, IVP_CONTROLLER_PRIORITY, int) +0x54 @ vphysics_srv.so +0x7ba24
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9 0xf36aeecf 0xffff86d0 hk_Fixed_Constraint::hk_Fixed_Constraint(hk_Local_Constraint_System*, hk_Fixed_BP const*, hk_Rigid_Body*, hk_Rigid_Body*) +0x3f @ vphysics_srv.so +0x7becf
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10 0xf366ca6b 0xffff8700 CPhysicsConstraint::InitFixed(IVP_Environment*, CPhysicsConstraintGroup*, constraint_fixedparams_t const&) +0x1eb @ vphysics_srv.so +0x39a6b
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11 0xf366f9e8 0xffff87c0 CreateFixedConstraint(IVP_Environment*, CPhysicsObject*, CPhysicsObject*, IPhysicsConstraintGroup*, constraint_fixedparams_t const&) +0x48 @ vphysics_srv.so +0x3c9e8
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12 0xf2cffa1d 0xffff87f0 CPhysFixed::CreateConstraint(IPhysicsConstraintGroup*, hl_constraint_info_t const&) +0x13d @ server_srv.so +0xd98a1d
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13 0xf2d01e21 0xffff8910 CPhysConstraint::ActivateConstraint() +0x1c1 @ server_srv.so +0xd9ae21
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14 0xf2d01f90 0xffff8970 CPhysConstraint::Activate() +0x30 @ server_srv.so +0xd9af90
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15 0xf26a0475 0xffff8990 Entity__Activate(ILuaInterface*) +0x25 @ server_srv.so +0x739475
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16 0xf1ae62d9 0xffff89b0 lj_BC_FUNCC +0x32 @ lua_shared_srv.so +0x5d2d9
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17 0xf1ad9758 0xffff89e0 lua_pcall +0x48 @ lua_shared_srv.so +0x50758
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18 0xf1aa2c6c 0xffff8a00 CLuaInterface::PCall(int, int, int) +0x2c @ lua_shared_srv.so +0x19c6c
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19 0xf1aac8f6 0xffff8a30 CLuaInterface::CallFunctionProtected(int, int, bool) +0x76 @ lua_shared_srv.so +0x238f6
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20 0xf1aa3d9d 0xffff8ac0 CLuaInterface::CallInternalGetBool(int) +0x2d @ lua_shared_srv.so +0x1ad9d
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21 0xf253c43a 0xffff8af0 CWeaponSWEP::PrimaryAttack() +0x4a @ server_srv.so +0x5d543a
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22 0xf253c5fa 0xffff8b10 CWeaponSWEP::ItemPostFrame() +0x10a @ server_srv.so +0x5d55fa
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23 0xf24c418f 0xffff8b30 CBasePlayer::ItemPostFrame() +0x1ef @ server_srv.so +0x55d18f
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24 0xf2a674c2 0xffff8b80 CHL2_Player::ItemPostFrame() +0x12 @ server_srv.so +0xb004c2
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25 0xf2d4ac33 0xffff8ba0 CBasePlayer::PostThink() +0x153 @ server_srv.so +0xde3c33
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26 0xf2a65da2 0xffff8c00 CHL2_Player::PostThink() +0x12 @ server_srv.so +0xafeda2
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27 0xf2c4d187 0xffff8c20 CHL2MP_Player::PostThink() +0x27 @ server_srv.so +0xce6187
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28 0xf2512a02 0xffff8c70 CGMOD_Player::PostThink() +0xa2 @ server_srv.so +0x5aba02
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29 0xf2d59596 0xffff8cb0 CPlayerMove::RunPostThink(CBasePlayer*) +0x26 @ server_srv.so +0xdf2596
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30 0xf2d59ebc 0xffff8cf0 CPlayerMove::RunCommand(CBasePlayer*, CUserCmd*, IMoveHelper*) +0x83c @ server_srv.so +0xdf2ebc
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31 0xf2d526c3 0xffff8d70 CBasePlayer::PlayerRunCommand(CUserCmd*, IMoveHelper*) +0xb3 @ server_srv.so +0xdeb6c3
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32 0xf2d5031e 0xffff8db0 CBasePlayer::PhysicsSimulate() +0x3de @ server_srv.so +0xde931e
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33 0xf25c949c 0xffff8e30 CBaseEntity::PhysicsSimulate() +0x16c @ server_srv.so +0x66249c
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34 0xf25c949c 0xffff8e90 CBaseEntity::PhysicsSimulate() +0x16c @ server_srv.so +0x66249c
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35 0xf2d1e5c3 0xffff8ef0 Physics_SimulateEntity(CBaseEntity*) +0x303 @ server_srv.so +0xdb75c3
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36 0xf2d1e9c1 0xffff8f30 Physics_RunThinkFunctions(bool) +0x1c1 @ server_srv.so +0xdb79c1
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37 0xf2935157 0xffff9ec0 CServerGameDLL::GameFrame(bool) +0x117 @ server_srv.so +0x9ce157
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38 0xf6c6d608 0xffff9f10 SV_Think(bool) +0x88 @ engine_srv.so +0x1cb608
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39 0xf6c6e7b3 0xffff9f50 SV_Frame(bool) +0xe3 @ engine_srv.so +0x1cc7b3
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END:Host_RunFrame
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LUA
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| 0 [C]:-1: Activate
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| 1 lua/includes/modules/constraint.lua:470: oldFunc
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| 2 lua/advdupe2/sv_misc.lua:85: Weld
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| 3 gamemodes/sandbox/entities/weapons/gmod_tool/stools/weld.lua:59: LeftClick
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| 4 gamemodes/sandbox_modded/entities/weapons/gmod_tool/shared.lua:270: ?
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STACK:1: <Entity>.
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.
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EOF:U

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