Bug#957190: f2j: ftbfs with GCC-10

[Matthias Klose]

Package: src:f2j
Version: 0.8.1+dfsg-4
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/f2j_0.8.1+dfsg-4_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

[...]
 4817 |   for(i=0; i<=MAX_ARRAY_DIM; i++) {
      |   ^~~
gcc -Wall -DDEBUG_MEM -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -I /<<PKGBUILDDIR>>/libbytecode -c f2jlex.c
gcc -Wall -DDEBUG_MEM -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -I /<<PKGBUILDDIR>>/libbytecode -c f2jmain.c
gcc -Wall -DDEBUG_MEM -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -I /<<PKGBUILDDIR>>/libbytecode -c codegen.c
codegen.c: In function ‘emit’:
codegen.c:112:7: warning: case value ‘0’ not in enumerated type ‘enum _nodetype’ [-Wswitch]
  112 |       case 0:
      |       ^~~~
codegen.c:108:9: warning: variable ‘locals’ set but not used [-Wunused-but-set-variable]
  108 |     int locals;
      |         ^~~~~~
codegen.c: In function ‘getNameFromCommonDesc’:
codegen.c:1847:8: warning: comparison between pointer and zero character constant [-Wpointer-compare]
 1847 |   if(p == '\0')
      |        ^~
codegen.c:1847:6: note: did you mean to dereference the pointer?
 1847 |   if(p == '\0')
      |      ^
codegen.c: In function ‘getFieldDescFromCommonDesc’:
codegen.c:1890:8: warning: comparison between pointer and zero character constant [-Wpointer-compare]
 1890 |   if(p == '\0')
      |        ^~
codegen.c:1890:6: note: did you mean to dereference the pointer?
 1890 |   if(p == '\0')
      |      ^
codegen.c: In function ‘data_string_emit’:
codegen.c:3306:16: warning: variable ‘count’ set but not used [-Wunused-but-set-variable]
 3306 |   unsigned int count, size = 0;
      |                ^~~~~
codegen.c: In function ‘LHS_bytecode_emit’:
codegen.c:11009:12: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
11009 |            (BOOL)isArg, class, name, desc, typenode->variable->astnode.ident.localvnum, FALSE);
      |            ^
gcc -Wall -DDEBUG_MEM -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -I /<<PKGBUILDDIR>>/libbytecode -c vcg_emitter.c
vcg_emitter.c: In function ‘emit_vcg’:
vcg_emitter.c:234:5: warning: case value ‘0’ not in enumerated type ‘enum _nodetype’ [-Wswitch]
  234 |     case 0:
      |     ^~~~
gcc -Wall -DDEBUG_MEM -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -I /<<PKGBUILDDIR>>/libbytecode -c typecheck.c
typecheck.c: In function ‘typecheck’:
typecheck.c:102:5: warning: case value ‘0’ not in enumerated type ‘enum _nodetype’ [-Wswitch]
  102 |     case 0:
      |     ^~~~
gcc -Wall -DDEBUG_MEM -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -I /<<PKGBUILDDIR>>/libbytecode -c optimize.c
optimize.c: In function ‘optimize’:
optimize.c:188:5: warning: case value ‘0’ not in enumerated type ‘enum _nodetype’ [-Wswitch]
  188 |     case 0:
      |     ^~~~
gcc -Wall -DDEBUG_MEM -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -I /<<PKGBUILDDIR>>/libbytecode -c globals.c
gcc -Wall -DDEBUG_MEM -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -I /<<PKGBUILDDIR>>/libbytecode -o f2java y.tab.o f2jlex.o f2jmain.o  symtab.o codegen.o vcg_emitter.o dlist.o typecheck.o optimize.o globals.o f2jmem.o -L/<<PKGBUILDDIR>>/libbytecode -lbytecode  -Wl,-z,relro -Wl,-z,now
/usr/bin/ld: f2jlex.o:./src/opcodes.h:50: multiple definition of `array_spec_descriptor'; y.tab.o:./src/opcodes.h:50: first defined here
/usr/bin/ld: f2jmain.o:./src/opcodes.h:50: multiple definition of `array_spec_descriptor'; y.tab.o:./src/opcodes.h:50: first defined here
/usr/bin/ld: symtab.o:./src/opcodes.h:50: multiple definition of `array_spec_descriptor'; y.tab.o:./src/opcodes.h:50: first defined here
/usr/bin/ld: codegen.o:./src/opcodes.h:50: multiple definition of `array_spec_descriptor'; y.tab.o:./src/opcodes.h:50: first defined here
/usr/bin/ld: vcg_emitter.o:./src/opcodes.h:50: multiple definition of `array_spec_descriptor'; y.tab.o:./src/opcodes.h:50: first defined here
/usr/bin/ld: dlist.o:./src/opcodes.h:50: multiple definition of `array_spec_descriptor'; y.tab.o:./src/opcodes.h:50: first defined here
/usr/bin/ld: typecheck.o:./src/opcodes.h:50: multiple definition of `array_spec_descriptor'; y.tab.o:./src/opcodes.h:50: first defined here
/usr/bin/ld: optimize.o:./src/optimize.c:49: multiple definition of `unit_name'; codegen.o:./src/codegen.c:28: first defined here
/usr/bin/ld: optimize.o:./src/opcodes.h:50: multiple definition of `array_spec_descriptor'; y.tab.o:./src/opcodes.h:50: first defined here
/usr/bin/ld: globals.o:./src/opcodes.h:50: multiple definition of `array_spec_descriptor'; y.tab.o:./src/opcodes.h:50: first defined here
/usr/bin/ld: f2jmem.o:./src/opcodes.h:50: multiple definition of `array_spec_descriptor'; y.tab.o:./src/opcodes.h:50: first defined here
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:20: f2java] Error 1
make[2]: Leaving directory '/<<PKGBUILDDIR>>/src'
make[1]: *** [Makefile:24: f2java] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
dh_auto_build: error: make -j4 returned exit code 2
make: *** [debian/rules:12: build] Error 25
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2