1const std = @import("std");
 2
 3pub fn panic(message: []const u8, stack_trace: ?*std.builtin.StackTrace, _: ?usize) noreturn {
 4    _ = stack_trace;
 5    if (std.mem.eql(u8, message, "left shift overflowed bits")) {
 6        std.process.exit(0);
 7    }
 8    std.process.exit(1);
 9}
10
11pub fn main() !void {
12    const x = shl(-16385, 1);
13    if (x == 0) return error.Whatever;
14    return error.TestFailed;
15}
16fn shl(a: i16, b: u4) i16 {
17    return @shlExact(a, b);
18}
19// run
20// backend=selfhosted,llvm
21// target=x86_64-linux