The direct use of the stack pointer to reference local variables is probably caused by the use of compiler optimizations. I think you could solve the issue in a couple of ways:

• Disabling frame pointer optimizations (-fno-omit-frame-pointer in GCC);
• Inserting esp in the Clobbers so the compiler will be aware that its value is being modified.

The direct use of the stack pointer to reference local variables is probably caused by the use of compiler optimizations. I think you could solve the issue in a couple of ways:

• Disabling frame pointer optimizations (-fno-omit-frame-pointer in GCC);
• Inserting esp in the Clobbers so the compiler will be aware that its value is being modified (check your compiler for compatibility).