Hi Xiao-Yong,
I suppose this warning is bogus as well. However, I have changed
the default Shape constructor
so that even unused elements of rho[] are initialized to 0. SVN 853.
/// Jürgen
On 01/17/2017 03:05 AM, Xiao-Yong Jin
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
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