1|       |#![feature(or_patterns)]
    2|       |
    3|      1|fn main() {
    4|      1|    // Initialize test constants in a way that cannot be determined at compile time, to ensure
    5|      1|    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
    6|      1|    // dependent conditions.
    7|      1|    let is_true = std::env::args().len() == 1;
    8|      1|
    9|      1|    let mut a: u8 = 0;
   10|      1|    let mut b: u8 = 0;
   11|      1|    if is_true {
   12|      1|        a = 2;
   13|      1|        b = 0;
   14|      1|    }
                   ^0
   15|      1|    match (a, b) {
   16|       |        // Or patterns generate MIR `SwitchInt` with multiple targets to the same `BasicBlock`.
   17|       |        // This test confirms a fix for Issue #79569.
   18|      0|        (0 | 1, 2 | 3) => {}
   19|      1|        _ => {}
   20|       |    }
   21|      1|    if is_true {
   22|      1|        a = 0;
   23|      1|        b = 0;
   24|      1|    }
                   ^0
   25|      1|    match (a, b) {
   26|      0|        (0 | 1, 2 | 3) => {}
   27|      1|        _ => {}
   28|       |    }
   29|      1|    if is_true {
   30|      1|        a = 2;
   31|      1|        b = 2;
   32|      1|    }
                   ^0
   33|      1|    match (a, b) {
   34|      0|        (0 | 1, 2 | 3) => {}
   35|      1|        _ => {}
   36|       |    }
   37|      1|    if is_true {
   38|      1|        a = 0;
   39|      1|        b = 2;
   40|      1|    }
                   ^0
   41|      1|    match (a, b) {
   42|      1|        (0 | 1, 2 | 3) => {}
   43|      0|        _ => {}
   44|       |    }
   45|      1|}