You used the local variable name without first assigning it a value, which could lead to unpredictable results.

The following sample generates C4700:

// C4700.cpp
// compile with: /W1
int main() {
   int i;
   return i;   // C4700
}

Under /clr:safe this is a level 4 warning. The following sample generates C4700:

// C4700b.cpp
// compile with: /W4 /clr:safe /c
using namespace System;
int main() {
   Int32^ bi;
   return *bi;   // C4700
}