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:
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 ...
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.
