[Debian GNUstep maintainers] Bug#957682: pikopixel.app: ftbfs with GCC-10

[Matthias Klose]

Package: src:pikopixel.app
Version: 1.0-b9d-2
Severity: normal
Tags: sid bullseye
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-10

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-10/g++-10, but succeeds to build with gcc-9/g++-9. The
severity of this report will be raised before the bullseye release,
so nothing has to be done for the buster release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc10-20200225/pikopixel.app_1.0-b9d-2_unstable_gcc10.log
The last lines of the build log are at the end of this report.

To build with GCC 10, either set CC=gcc-10 CXX=g++-10 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

Common build failures are new warnings resulting in build failures with
-Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-10/porting_to.html

[...]
PPGNUstepGlue_WindowStyleOffsets.m:100:68: error: expected ‘)’ before ‘::’ token
  100 |         ppSwizzleInstanceMethodWithSelector: @selector(styleoffsets::::::)
      |                                                       ~            ^~
      |                                                                    )
PPGNUstepGlue_WindowStyleOffsets.m:101:79: error: expected ‘)’ before ‘::’ token
  101 |         forInstanceMethodWithSelector: @selector(ppGSPatch_Compiz_Styleoffsets::::::)];
      |                                                 ~                             ^~
      |                                                                               )
In file included from PPGNUstepGlue_WindowStyleOffsets.m:38:
PPGNUstepGlue_WindowStyleOffsets.m: In function ‘+[NSObject(PPGNUstepGlue) WindowStyleOffsets_ppGSGlue_WindowStyleOffsets_KwinMrcoOpbxWmkrXfwm_InstallPatches]’:
PPGNUstepGlue_WindowStyleOffsets.m:115:76: error: expected ‘)’ before ‘::’ token
  115 |     macroSwizzleInstanceMethod(NSClassFromString(@"XGServer"), styleoffsets::::::,
      |                                                                            ^~
NSObject_PPUtilities.h:53:71: note: in definition of macro ‘macroSwizzleInstanceMethod’
   53 |                 [class ppSwizzleInstanceMethodWithSelector: @selector(selectorName1)    \
      |                                                                       ^~~~~~~~~~~~~
NSObject_PPUtilities.h:53:70: note: to match this ‘(’
   53 |                 [class ppSwizzleInstanceMethodWithSelector: @selector(selectorName1)    \
      |                                                                      ^
PPGNUstepGlue_WindowStyleOffsets.m:115:5: note: in expansion of macro ‘macroSwizzleInstanceMethod’
  115 |     macroSwizzleInstanceMethod(NSClassFromString(@"XGServer"), styleoffsets::::::,
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
PPGNUstepGlue_WindowStyleOffsets.m:116:76: error: expected ‘)’ before ‘::’ token
  116 |                                 ppGSPatch_KwinMrcoOpbxWmkrXfwm_Styleoffsets::::::);
      |                                                                            ^~
NSObject_PPUtilities.h:54:66: note: in definition of macro ‘macroSwizzleInstanceMethod’
   54 |                         forInstanceMethodWithSelector: @selector(selectorName2)]
      |                                                                  ^~~~~~~~~~~~~
NSObject_PPUtilities.h:54:65: note: to match this ‘(’
   54 |                         forInstanceMethodWithSelector: @selector(selectorName2)]
      |                                                                 ^
PPGNUstepGlue_WindowStyleOffsets.m:115:5: note: in expansion of macro ‘macroSwizzleInstanceMethod’
  115 |     macroSwizzleInstanceMethod(NSClassFromString(@"XGServer"), styleoffsets::::::,
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
PPGNUstepGlue_WindowStyleOffsets.m: In function ‘+[NSObject(PPGNUstepGlue) WindowStyleOffsets_ppGSGlue_WindowStyleOffsets_BgieGalaMufnMutr_InstallPatches]’:
PPGNUstepGlue_WindowStyleOffsets.m:125:59: error: expected ‘)’ before ‘::’ token
  125 |     macroSwizzleInstanceMethod(XGServerClass, styleoffsets::::::,
      |                                                           ^~
NSObject_PPUtilities.h:53:71: note: in definition of macro ‘macroSwizzleInstanceMethod’
   53 |                 [class ppSwizzleInstanceMethodWithSelector: @selector(selectorName1)    \
      |                                                                       ^~~~~~~~~~~~~
NSObject_PPUtilities.h:53:70: note: to match this ‘(’
   53 |                 [class ppSwizzleInstanceMethodWithSelector: @selector(selectorName1)    \
      |                                                                      ^
PPGNUstepGlue_WindowStyleOffsets.m:125:5: note: in expansion of macro ‘macroSwizzleInstanceMethod’
  125 |     macroSwizzleInstanceMethod(XGServerClass, styleoffsets::::::,
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
PPGNUstepGlue_WindowStyleOffsets.m:126:72: error: expected ‘)’ before ‘::’ token
  126 |                                 ppGSPatch_BgieGalaMufnMutr_Styleoffsets::::::);
      |                                                                        ^~
NSObject_PPUtilities.h:54:66: note: in definition of macro ‘macroSwizzleInstanceMethod’
   54 |                         forInstanceMethodWithSelector: @selector(selectorName2)]
      |                                                                  ^~~~~~~~~~~~~
NSObject_PPUtilities.h:54:65: note: to match this ‘(’
   54 |                         forInstanceMethodWithSelector: @selector(selectorName2)]
      |                                                                 ^
PPGNUstepGlue_WindowStyleOffsets.m:125:5: note: in expansion of macro ‘macroSwizzleInstanceMethod’
  125 |     macroSwizzleInstanceMethod(XGServerClass, styleoffsets::::::,
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
make[5]: *** [/usr/share/GNUstep/Makefiles/rules.make:479: obj/PikoPixel.obj/PPGNUstepGlue_WindowStyleOffsets.m.o] Error 1
make[5]: *** Waiting for unfinished jobs....
make[4]: *** [/usr/share/GNUstep/Makefiles/Instance/application.make:147: internal-app-run-compile-submake] Error 2
make[3]: *** [/usr/share/GNUstep/Makefiles/Master/rules.make:297: PikoPixel.all.app.variables] Error 2
make[2]: *** [/usr/share/GNUstep/Makefiles/Master/application.make:38: internal-all] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>/PikoPixel'
dh_auto_build: error: cd PikoPixel && make -j4 "INSTALL=install --strip-program=true" messages=yes "CFLAGS=-g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security" "CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2" "CXXFLAGS=-g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security" "FCFLAGS=-g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong" "FFLAGS=-g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong" "GCJFLAGS=-g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong" "LDFLAGS=-Wl,-z,relro -Wl,-z,now -Wl,--no-undefined -Wl,--as-needed" "OBJCFLAGS=-g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security" "OBJCXXFLAGS=-g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security" returned exit code 2
make[1]: *** [debian/rules:14: override_dh_auto_build] Error 25
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:11: build] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2