[Bug 227951] x11-wm/icewm: Does not build due to some C++11 compilation errors

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227951

w.schwarzenfeld at utanet.at changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |w.schwarzenfeld at utanet.at

--- Comment #1 from w.schwarzenfeld at utanet.at ---
It also fails on 10.4.  I got it to compile with USES=          
compiler:c++11-lang in the Makefile and with clang50. It does not compile with
clang60.

With clang69 a lot of errors like 
./ref.h:22:15: note: expanded from macro 'null'
:#define null (*(class null_ref *)0)15: note: expanded from macro 'null'

#define null (*(class null_ref *)0)              ^~~~~~~~~~~~~~~~~~~~

              ^~~~~~~~~~~~~~~~~~~~
wmapp.cc:652:39: warning: binding dereferenced null pointer to reference has
undefined behavior
      [-Wnull-dereference]
    if (TEST_GRADIENT(logoutPixbuf == null))
                                      ^~~~
./ref.h:22:15: note: expanded from macro 'null'
#define null (*(class null_ref *)0)
              ^~~~~~~~~~~~~~~~~~~~
./ypaint.h:36:30: note: expanded from macro 'TEST_GRADIENT'
#define TEST_GRADIENT(Cond) (Cond)
                             ^~~~
wmapp.cc:654:43: warning: binding dereferenced null pointer to reference has
undefined behavior
      [-Wnull-dereference]
    if (TEST_GRADIENT(switchbackPixbuf == null))
                                          ^~~~
./ref.h:22:15: note: expanded from macro 'null'
#define null (*(class null_ref *)0)
              ^~~~~~~~~~~~~~~~~~~~
./ypaint.h:36:30: note: expanded from macro 'TEST_GRADIENT'
#define TEST_GRADIENT(Cond) (Cond)
                             ^~~~
wmapp.cc:656:41: warning: binding dereferenced null pointer to reference has
undefined behavior
      [-Wnull-dereference]
    if (TEST_GRADIENT(menubackPixbuf == null))
                                        ^~~~
./ref.h:22:15: note: expanded from macro 'null'
#define null (*(class null_ref *)0)
              ^~~~~~~~~~~~~~~~~~~~
./ypaint.h:36:30: note: expanded from macro 'TEST_GRADIENT'
#define TEST_GRADIENT(Cond) (Cond)
                             ^~~~
wmapp.cc:658:40: warning: binding dereferenced null pointer to reference has
undefined behavior
      [-Wnull-dereference]
    if (TEST_GRADIENT(menuselPixbuf == null))
                                       ^~~~
./ref.h:22:15: note: expanded from macro 'null'
#define null (*(class null_ref *)0)
              ^~~~~~~~~~~~~~~~~~~~
./ypaint.h:36:30: note: expanded from macro 'TEST_GRADIENT'
#define TEST_GRADIENT(Cond) (Cond)
                             ^~~~
wmapp.cc:660:40: warning: binding dereferenced null pointer to reference has
undefined behavior
      [-Wnull-dereference]
    if (TEST_GRADIENT(menusepPixbuf == null))
                                       ^~~~
./ref.h:22:15: note: expanded from macro 'null'
wmframe.cc#define null (*(class null_ref *)0)
              ^~~~~~~~~~~~~~~~~~~~
:./ypaint.h:36:30: note: expanded from macro 'TEST_GRADIENT'
2227#define TEST_GRADIENT(Cond) (Cond)
                             ^~~~
wmapp.cc:664:41: warning: binding dereferenced null pointer to reference has
undefined behavior
      [-Wnull-dereference]
:21    if (TEST_GRADIENT(listbackPixbuf == null) &&
                                        ^~~~
:./ref.h:22:15: note: expanded from macro 'null'
 #define null (*(class null_ref *)0)warning: binding dereferenced null pointer
to reference has undefined behavior
      [-Wnull-dereference]

    WindowOption wo(null);              ^~~~~~~~~~~~~~~~~~~~

                    ^~~~
./ref.h:22:15: note: expanded from macro 'null'
./ypaint.h#define null (*(class null_ref *)0):36:30: note: expanded from macro
'TEST_GRADIENT'

#define TEST_GRADIENT(Cond) (Cond)
                             ^~~~
wmapp.cc:665:66: warning: binding dereferenced null pointer to reference has
undefined behavior
      [-Wnull-dereference]
        (listbackPixmap = paths->loadPixmap(0, "listbg.xpm")) == null)
                                                                 ^~~~
./ref.h:22:15: note: expanded from macro 'null'
#define null (*(class null_ref *)0)
              ^~~~~~~~~~~~~~~~~~~~
wmapp.cc:668:43: warning: binding dereferenced null pointer to reference has
undefined behavior
      [-Wnull-dereference]
    if (TEST_GRADIENT(dialogbackPixbuf == null) &&
                                          ^~~~
./ref.h:22:15: note: expanded from macro 'null'
#define null (*(class null_ref *)0)
              ^~~~~~~~~~~~~~~~~~~~
./ypaint.h:36:30: note: expanded from macro 'TEST_GRADIENT'
#define TEST_GRADIENT(Cond) (Cond)
                             ^~~~
wmapp.cc:669:70: warning: binding dereferenced null pointer to reference has
undefined behavior

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