30 lines
701 B
Rust
30 lines
701 B
Rust
//! @brief Example Rust-based BPF program that tests call depth and stack usage
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use solana_program::{custom_panic_default, entrypoint::SUCCESS, msg};
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#[inline(never)]
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pub fn recurse(data: &mut [u8]) {
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if data.len() <= 1 {
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return;
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}
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recurse(&mut data[1..]);
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msg!(line!(), 0, 0, 0, data[0]);
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}
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/// # Safety
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#[inline(never)]
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#[no_mangle]
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pub unsafe extern "C" fn entrypoint(input: *mut u8) -> u64 {
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msg!("Call depth");
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let depth = *(input.add(16) as *mut u8);
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msg!(line!(), 0, 0, 0, depth);
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let mut data = Vec::with_capacity(depth as usize);
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for i in 0_u8..depth {
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data.push(i);
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}
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recurse(&mut data);
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SUCCESS
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}
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custom_panic_default!();
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