In addition, there is one more warning/error.
g++ -DHAVE_CONFIG_H -I. -I.. -Werror -Wall -I sql -I/sandbox/pkg/lib/include
-I/sandbox/pkg/include -rdynamic -Wno-maybe-uninitialized -march=native -O3
-pipe -I/sandbox/pkg/include -MT apl-SymbolTable.o -MD -MP -MF
.deps/apl-SymbolTable.Tpo -c -o apl-SymbolTable.o `test -f 'SymbolTable.cc' ||
echo './'`SymbolTable.cc
SymbolTable.cc: In member function ‘void SystemSymTab::clear(std::ostream&)’:
SymbolTable.cc:499:37: error: iteration 255 invokes undefined behavior
[-Werror=aggressive-loop-optimizations]
SystemName * sym = symbol_table[hash];
^
In file included from Assert.hh:24:0,
from Simple_string.hh:33,
from CDR_string.hh:24,
from CDR.hh:24,
from SymbolTable.cc:24:
Common.hh:106:44: note: within this loop
#define loop(v, e) for (ShapeItem v = 0; v < ShapeItem(e); ++v)
SymbolTable.cc:493:4: note: in expansion of macro ‘loop’
loop(hash, SYMBOL_HASH_TABLE_SIZE) clear_slot(out, hash);
^~~~
cc1plus: all warnings being treated as errors
> On Jan 16, 2017, at 8:05 PM, Xiao-Yong Jin <jinxiaoy...@gmail.com> wrote:
>
> 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
