fuzz: program_result as u64

[febo]

Problem

Currently, the program_result in the structEffects is a u32 value. But the built-in InstructionError values occupy the upper 32 bits – casting the resulting u64 to u32 effectively drops their value. The issue is apparent when the instruction fails with a ProgramError::Custom(0) and fixtures are generated. The result of the cast in this case be 0, which is the same value as the ProgramResult::Success:

let program_result = match &program_result {
        ProgramResult::Success => 0,
        ProgramResult::Failure(e) => u64::from(e.clone()) as u32,
        ProgramResult::UnknownError(_) => u32::MAX, //TODO
};

Solution

Update the value of program_result to be a u64.

[buffalojoec]

Thanks!!