fhandler_dsp.cc error: nonnull argument ‘this’ compared to NULL

[Brian Inglis]

Getting failure building latest git with current gcc 6.3
...
c++wrap -O2 -g -fno-rtti -fno-exceptions -fno-use-cxa-atexit -Wall
-Wstrict-aliasing -Wwrite-strings -fno-common -pipe -fbuiltin -fmessage-length=0
-MMD -Werror -fmerge-constants -ftracer -c -o fhandler_dsp.o
../../.././winsup/cygwin/fhandler_dsp.cc
../../.././winsup/cygwin/fhandler_dsp.cc: In member function ‘void
fhandler_dev_dsp::Audio_out::buf_info(audio_buf_info*, int, int, int)’:
../../.././winsup/cygwin/fhandler_dsp.cc:503:3: error: nonnull argument ‘this’
compared to NULL [-Werror=nonnull-compar ]
   if (this && dev_)
   ^~
../../.././winsup/cygwin/fhandler_dsp.cc: In member function ‘void
fhandler_dev_dsp::Audio_in::buf_info(audio_buf_info*, int, int, int)’:
../../.././winsup/cygwin/fhandler_dsp.cc:960:3: error: nonnull argument ‘this’
compared to NULL [-Werror=nonnull-compar ]
   if (this && dev_)
   ^~
cc1plus: all warnings being treated as errors
make[3]: *** [../../.././winsup/cygwin/../Makefile.common:41: fhandler_dsp.o]
Error 1

$ gcc --version
gcc (GCC) 6.3.0

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada