ad := (descsz + 3) &^ 3

			if int(12+an+ad) > len(d) {
				t.Logf("note section %d too short for header (%d < 12 + align(%d,4) + align(%d,4))", i, len(d), namesz, descsz)
				continue sections
			}

			// 3 == NT_GNU_BUILD_ID
			if typ == 3 && namesz == 4 && bytes.Equal(d[12:16], []byte("GNU\000")) {
				c++
			}

			d = d[12+an+ad:]
		}
	}

	if c > 1 {
		t.Errorf("found %d build ID notes", c)
	}

</p>

<p><!-- CL 511475 -->
  On ELF platforms, the <code>-B</code> linker flag now accepts a special form:
  with <code>-B</code> <code>gobuildid</code>, the linker will generate a GNU
  build ID (the ELF <code>NT_GNU_BUILD_ID</code> note) derived from the Go
  build ID.
</p>

<p><!-- CL 534555 -->
  On Windows, when building with <code>-linkmode=internal</code>, the linker now