zig/test/cases/safety/pointer casting to null function pointer.zig
2025-07-26 17:31:04 -04:00

23 lines
603 B
Zig

const std = @import("std");
pub fn panic(message: []const u8, stack_trace: ?*std.builtin.StackTrace, _: ?usize) noreturn {
_ = stack_trace;
if (std.mem.eql(u8, message, "cast causes pointer to be null")) {
std.process.exit(0);
}
std.process.exit(1);
}
fn getNullPtr() ?*const anyopaque {
return null;
}
pub fn main() !void {
const null_ptr: ?*const anyopaque = getNullPtr();
const required_ptr: *align(1) const fn () void = @ptrCast(null_ptr);
_ = required_ptr;
return error.TestFailed;
}
// run
// backend=stage2,llvm
// target=x86_64-linux,aarch64-linux