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test_packed_struct_field_address.zig (416B) - Raw

      1 const std = @import("std");
      2 const expect = std.testing.expect;
      3 
      4 const BitField = packed struct {
      5     a: u3,
      6     b: u3,
      7     c: u2,
      8 };
      9 
     10 var bit_field = BitField{
     11     .a = 1,
     12     .b = 2,
     13     .c = 3,
     14 };
     15 
     16 test "pointers of sub-byte-aligned fields share addresses" {
     17     try expect(@intFromPtr(&bit_field.a) == @intFromPtr(&bit_field.b));
     18     try expect(@intFromPtr(&bit_field.a) == @intFromPtr(&bit_field.c));
     19 }
     20 
     21 // test