digitalmars.D.learn - Odd stacktrace: Access Violation in object.TypeInfo_Interface.getHash
- Fra (15/15) Sep 07 2015 I encountered a runtime error in my code and all I can get (even
- Nicholas Wilson (7/22) Sep 07 2015 __vtbl indicates an entry in a virtual function table
- Fra (15/39) Sep 07 2015 Truely so.
I encountered a runtime error in my code and all I can get (even in debug mode) is the following stacktrace: object.Error (0): Access Violation ---------------- 0x0051C308 in const(nothrow trusted uint function(const(void*))) object.TypeInfo_Interface.getHash 0x0058D2C0 in D6engine5world5world5World6__vtblZ Error executing command run: Program exited with code 1 No other information is provided. Anyone ever experienced anything similar? That __vtblZ part of the symbol name scares me a bit, TBH. The codebase is big, so will take me some time to reduce it to a simple example, even if I were to use dustmite, but I was hoping that someone faced this error message before and could give me a pointer on what to look for.
Sep 07 2015
On Monday, 7 September 2015 at 08:55:31 UTC, Fra wrote:I encountered a runtime error in my code and all I can get (even in debug mode) is the following stacktrace: object.Error (0): Access Violation ---------------- 0x0051C308 in const(nothrow trusted uint function(const(void*))) object.TypeInfo_Interface.getHash 0x0058D2C0 in D6engine5world5world5World6__vtblZ Error executing command run: Program exited with code 1 No other information is provided. Anyone ever experienced anything similar? That __vtblZ part of the symbol name scares me a bit, TBH. The codebase is big, so will take me some time to reduce it to a simple example, even if I were to use dustmite, but I was hoping that someone faced this error message before and could give me a pointer on what to look for.__vtbl indicates an entry in a virtual function table object.Error (0): the '0' the is the address that failed. you attempted to get the hash of a null object ( of type engine.world.world.World ) It does seem a bit odd that no other info is provided stack traces are usually quite a bit longer than that ...
Sep 07 2015
On Monday, 7 September 2015 at 11:04:20 UTC, Nicholas Wilson wrote:On Monday, 7 September 2015 at 08:55:31 UTC, Fra wrote:Truely so. Besides, I managed to track down the exact instruction that triggers the whole thing: SomeClass[SomeInterface] myAA; [... lots of code ...] SomeInterface element = null; [... more lots of code ...] if (element !in myAA) return; where myAA is a standard Associative array and SomeClass also inherits from the SomeInterface. I'm still trying to get provide a "working" example. I am using an old compiler (2.66.1), but I could not find any corresponding bug on issues.dlang.org, neither open nor resolved.I encountered a runtime error in my code and all I can get (even in debug mode) is the following stacktrace: object.Error (0): Access Violation ---------------- 0x0051C308 in const(nothrow trusted uint function(const(void*))) object.TypeInfo_Interface.getHash 0x0058D2C0 in D6engine5world5world5World6__vtblZ Error executing command run: Program exited with code 1 No other information is provided. Anyone ever experienced anything similar? That __vtblZ part of the symbol name scares me a bit, TBH. The codebase is big, so will take me some time to reduce it to a simple example, even if I were to use dustmite, but I was hoping that someone faced this error message before and could give me a pointer on what to look for.__vtbl indicates an entry in a virtual function table object.Error (0): the '0' the is the address that failed. you attempted to get the hash of a null object ( of type engine.world.world.World ) It does seem a bit odd that no other info is provided stack traces are usually quite a bit longer than that ...
Sep 07 2015