[Bug-apl] svn r849 fails to compile with gcc 6.2 -O3

[Xiao-Yong Jin]

Not sure if it's another gcc unrolling bug.
Using gcc 6.2.0

g++ -DHAVE_CONFIG_H -I. -I..    -Werror -Wall -I sql -I/sandbox/pkg/lib/include 
-I/sandbox/pkg/include  -rdynamic -march=native -O3 -pipe 
-I/sandbox/pkg/include -MT apl-Bif_F12_SORT.o -MD -MP -MF .deps/ap
l-Bif_F12_SORT.Tpo -c -o apl-Bif_F12_SORT.o `test -f 'Bif_F12_SORT.cc' || echo 
'./'`Bif_F12_SORT.cc
In file included from PrintBuffer.hh:28:0,
                 from Cell.hh:27,
                 from Value.hh:30,
                 from Value.icc:24,
                 from NamedObject.hh:25,
                 from Function.hh:27,
                 from PrimitiveFunction.hh:25,
                 from Bif_F12_SORT.hh:25,
                 from Bif_F12_SORT.cc:22:
Shape.hh: In constructor ‘CollatingCache::CollatingCache(const Value&, const 
Cell*, ShapeItem)’:
Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[7]’ may be used 
uninitialized in this function [-Werror=maybe-uninitialized]
         rho[rho_rho++] = len;   volume *= len; }
                                           ^~~
Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[7]’ was declared 
here
          const CollatingCacheEntry entry(uni, A.get_shape());
                                    ^~~~~
In file included from PrintBuffer.hh:28:0,
                 from Cell.hh:27,
                 from Value.hh:30,
                 from Value.icc:24,
                 from NamedObject.hh:25,
                 from Function.hh:27,
                 from PrimitiveFunction.hh:25,
                 from Bif_F12_SORT.hh:25,
                 from Bif_F12_SORT.cc:22:
Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[6]’ may be used 
uninitialized in this function [-Werror=maybe-uninitialized]
         rho[rho_rho++] = len;   volume *= len; }
                                           ^~~
Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[6]’ was declared 
here
          const CollatingCacheEntry entry(uni, A.get_shape());
                                    ^~~~~
In file included from PrintBuffer.hh:28:0,
                 from Cell.hh:27,
                 from Value.hh:30,
                 from Value.icc:24,
                 from NamedObject.hh:25,
                 from Function.hh:27,
                 from PrimitiveFunction.hh:25,
                 from Bif_F12_SORT.hh:25,
                 from Bif_F12_SORT.cc:22:
Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[5]’ may be used 
uninitialized in this function [-Werror=maybe-uninitialized]
         rho[rho_rho++] = len;   volume *= len; }
                                           ^~~
Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[5]’ was declared 
here
          const CollatingCacheEntry entry(uni, A.get_shape());
                                    ^~~~~
In file included from PrintBuffer.hh:28:0,
                 from Cell.hh:27,
                 from Value.hh:30,
                 from Value.icc:24,
                 from NamedObject.hh:25,
                 from Function.hh:27,
                 from PrimitiveFunction.hh:25,
                 from Bif_F12_SORT.hh:25,
                 from Bif_F12_SORT.cc:22:
Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[4]’ may be used 
uninitialized in this function [-Werror=maybe-uninitialized]
         rho[rho_rho++] = len;   volume *= len; }
                                           ^~~
Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[4]’ was declared 
here
          const CollatingCacheEntry entry(uni, A.get_shape());
                                    ^~~~~
In file included from PrintBuffer.hh:28:0,
                 from Cell.hh:27,
                 from Value.hh:30,
                 from Value.icc:24,
                 from NamedObject.hh:25,
                 from Function.hh:27,
                 from PrimitiveFunction.hh:25,
                 from Bif_F12_SORT.hh:25,
                 from Bif_F12_SORT.cc:22:
Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[3]’ may be used 
uninitialized in this function [-Werror=maybe-uninitialized]
         rho[rho_rho++] = len;   volume *= len; }
                                           ^~~
Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[3]’ was declared 
here
          const CollatingCacheEntry entry(uni, A.get_shape());
                                    ^~~~~
In file included from PrintBuffer.hh:28:0,
                 from Cell.hh:27,
                 from Value.hh:30,
                 from Value.icc:24,
                 from NamedObject.hh:25,
                 from Function.hh:27,
                 from PrimitiveFunction.hh:25,
                 from Bif_F12_SORT.hh:25,
                 from Bif_F12_SORT.cc:22:
Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[2]’ may be used 
uninitialized in this function [-Werror=maybe-uninitialized]
         rho[rho_rho++] = len;   volume *= len; }
                                           ^~~
Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[2]’ was declared 
here
          const CollatingCacheEntry entry(uni, A.get_shape());
                                    ^~~~~
In file included from PrintBuffer.hh:28:0,
                 from Cell.hh:27,
                 from Value.hh:30,
                 from Value.icc:24,
                 from NamedObject.hh:25,
                 from Function.hh:27,
                 from PrimitiveFunction.hh:25,
                 from Bif_F12_SORT.hh:25,
                 from Bif_F12_SORT.cc:22:
Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[1]’ may be used 
uninitialized in this function [-Werror=maybe-uninitialized]
         rho[rho_rho++] = len;   volume *= len; }
                                           ^~~
Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[1]’ was declared 
here
          const CollatingCacheEntry entry(uni, A.get_shape());
                                    ^~~~~
cc1plus: all warnings being treated as errors
make[3]: *** [apl-Bif_F12_SORT.o] Error 1