[Libguestfs] [libnbd PATCH 6/6] common/include: Fix MIN and MAX macros so they can be nested [finish port]

From: "Richard W.M. Jones" <rjones(a)redhat.com&gt; Original commit message: Thanks: Eric Blake Porting notes: We already have the nesting fix in the "common/include/minmax.h" header file, from nbdkit commit 9f462af12e3b ("common/include: Fix MIN and MAX macros so they can be nested", 2022-02-22), via libnbd commit 2f25695212db5. However, that port didn't include the update to the test case. Do it now. Signed-off-by: Laszlo Ersek <lersek(a)redhat.com&gt; (cherry picked from nbdkit commit 9f462af12e3b8b9840435a266d7e6e7d45ed70bf) --- common/include/test-minmax.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/common/include/test-minmax.c b/common/include/test-minmax.c index 285f8074e503..095c91491acc 100644 --- a/common/include/test-minmax.c +++ b/common/include/test-minmax.c @@ -154,5 +154,19 @@ main (void) SIGNED_TEST (f, -FLT_MAX, FLT_MAX); SIGNED_TEST (d, -DBL_MAX, DBL_MAX); + /* Test that MIN and MAX can be nested. This is really a compile + * test, but we do check the answer. + */ + assert (MIN (MIN (1, 2), 3) == 1); + assert (MAX (MIN (1, 2), 3) == 3); + assert (MIN (MAX (1, 2), 3) == 2); + assert (MAX (MAX (1, 4), 3) == 4); + assert (MIN (3, MIN (1, 2)) == 1); + assert (MAX (3, MIN (1, 2)) == 3); + assert (MIN (3, MAX (1, 2)) == 2); + assert (MAX (3, MAX (1, 4)) == 4); + assert (MIN (MIN (1, MIN (2, 3)), 4) == 1); + assert (MAX (MAX (1, MAX (2, 3)), 4) == 4); + exit (EXIT_SUCCESS); }