Compiler Error C2393
'symbol' : per-appdomain symbol cannot be allocated in segment 'segment'
The use of appdomain variables implies that you are compiling with /clr:pure or /clr:safe, and a safe or pure image cannot contain data segments.
See /clr (Common Language Runtime Compilation) for more information.
Example
The following sample generates C2393.
// C2393.cpp
// compile with: /clr:pure /c
#pragma data_seg("myseg")
int n = 0; // C2393