Kernel Crashes due to compiler optimization

[iocoder]

I tried above code cause another strange execution happened when i have a code to print functions in assembly and called the function from the c file(linked both files) , the first two instructions are not executed and but when i place a call to print the message with in the assembly file it executes correctly . So i gave a try compiling the above tutorial code.

see the disassembly of the code (push edi) in the image, the stack doesn't changed after the execution.

I will provide you the image that caused the strange execution.

1. After stepping the instruction
2.Before steeping the instruction

Looks like the emulator misinterprets the opcode at 0xc0001120. Are you sure your code never modifies this memory location?

[irvanherz]

I'm not sure. But I think that was because inline assemblies that not marked as volatile