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mrustc (master)
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use std::ptr; pub fn dump_var( f: usize, var0: usize, val0: i32, var1: usize, val1: i32, var2: usize, val2: i32, var3: usize, val3: i32, ) { println!("fn{f}:_{var0} = {val0}, _{var1} = {val1}, _{var2} = {val2}, _{var3} = {val3}"); } unsafe fn fn2(mut _2: *mut i32) { println!("entering fn2"); let mut np: *mut i128 = ptr::null_mut(); let mut npp = ptr::addr_of_mut!(np); let mut byte: u8 = 0; let byte_ptr = ptr::addr_of_mut!(byte); let mut discr: i128 = 0; let mut _16 = ptr::addr_of_mut!(discr); *_16 = 19769033156256055278156766228563896803_i128; fn3(npp, byte_ptr, [0; 4], _2, 0, *_16); loop { npp = ptr::addr_of_mut!(_16); match discr { 3 => { discr = 0; fn3(npp, byte_ptr, [0; 4], _2, *_16, *_16); } _ => return, } } } pub unsafe fn fn3( mut _5: *mut *mut i128, byte_ptr: *mut u8, mut _7: [i64; 4], mut _8: *mut i32, mut _9: i128, mut big_num: i128, ) { println!("entering fn3"); (*_5) = ptr::addr_of_mut!(big_num); *byte_ptr = 0; fn4(big_num, *_8, _5, _9, *_5); _7 = [0; 4]; } pub unsafe fn fn4( big_num: i128, mut _7: i32, mut _8: *mut *mut i128, mut _12: i128, mut _13: *mut i128, ) { println!("entering fn4"); (*_13) = 0; // This cannot change big_num as it was passed by value match big_num { 19769033156256055278156766228563896803 => { println!("right branch"); (*_8) = ptr::addr_of_mut!(_12); fn5(_7) } _ => { println!("wrong branch"); return; } } } pub fn fn5(mut _1: i32) { println!("entering fn5"); dump_var(5, 1, _1, 0, 0, 0, 0, 0, 0); } pub fn main() { let mut _6: i32 = 0; let _16 = ptr::addr_of_mut!(_6); unsafe { fn2(_16) } }
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