How to debug C stack overflow errors?

[uvic1rn (Sarah)]

I keep getting spurious errors like this that sometimes crashes Studio:

2024-07-22T12:00:38.956Z,94.956741,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:38.956Z,94.956741,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:38.956Z,94.956741,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:38.956Z,94.956741,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:38.957Z,94.957741,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:38.957Z,94.957741,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:38.957Z,94.957741,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:38.957Z,94.957741,017c,6 [FLog::Error] Error: Maximum event re-entrancy depth exceeded for ScriptContext.Error
2024-07-22T12:00:39.017Z,95.017784,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.017Z,95.017784,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.018Z,95.018784,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.018Z,95.018784,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.018Z,95.018784,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.018Z,95.018784,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.018Z,95.018784,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.018Z,95.018784,017c,6 [FLog::Error] Error: Maximum event re-entrancy depth exceeded for ScriptContext.Error
2024-07-22T12:00:39.087Z,95.087769,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.088Z,95.088776,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.088Z,95.088776,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.088Z,95.088776,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.088Z,95.088776,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.088Z,95.088776,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.090Z,95.090775,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.090Z,95.090775,017c,6 [FLog::Error] Error: Maximum event re-entrancy depth exceeded for ScriptContext.Error
2024-07-22T12:00:39.175Z,95.175400,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.176Z,95.176399,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.176Z,95.176399,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.176Z,95.176399,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.176Z,95.176399,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.176Z,95.176399,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.177Z,95.177399,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.177Z,95.177399,017c,6 [FLog::Error] Error: Maximum event re-entrancy depth exceeded for ScriptContext.Error
2024-07-22T12:00:39.283Z,95.283264,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.284Z,95.284264,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.284Z,95.284264,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.284Z,95.284264,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.284Z,95.284264,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.284Z,95.284264,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.284Z,95.284264,017c,6 [FLog::Error] Error: C stack overflow
2024-07-22T12:00:39.285Z,95.285263,017c,6 [FLog::Error] Error: Maximum event re-entrancy depth exceeded for ScriptContext.Error

These don’t provide a traceback. How do I debug this?

[dthecoolest]

Judging from other posts you need to find any script or module script related to metatables so search for something like __mul or __newindex.

Why am I getting "C stack overflow"?

C stack overflow in simpler terms is pretty much stating your overflowing the stack with repetition, e.g: a infinite loop. Your dividing self with magnitude, but it returns with another Vector3.new call which in turns calls itself over and over each time unit is set if (rawequal(type(op1), "table") and rawequal(type(op2), "table")) then return Vector3.new(op1.X/op2.X, op1.Y/op2.Y, op1.Z/op2.Z); end if (rawequal(type(op2), "number")) then return Vector3.new(op1.X/op…

[uvic1rn (Sarah)]

Nevermind, if I wait patiently the problematic script is killed by Roblox and throws a script timeout error.