GitHub-Proxy/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2025-04-16 14:49:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

bug #1410: fix lvalue propagation of Array/Matrix-Wrapper with a const nested expression.

Browse Source
This commit is contained in:
Gael Guennebaud 2017-06-09 13:13:03 +02:00
parent 723a59ac26
commit fb1ee04087
2 changed files with 25 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Eigen/src/Core/ArrayWrapper.h
View File

@ -32,7 +32,8 @@ struct traits<ArrayWrapper<ExpressionType> >
// Let's remove NestByRefBit
enum {
Flags0 = traits<typename remove_all<typename ExpressionType::Nested>::type >::Flags,
Flags = Flags0 & ~NestByRefBit
LvalueBitFlag = is_lvalue<ExpressionType>::value ? LvalueBit : 0,
Flags = (Flags0 & ~(NestByRefBit | LvalueBit)) | LvalueBitFlag
};
};
}
@ -129,7 +130,8 @@ struct traits<MatrixWrapper<ExpressionType> >
// Let's remove NestByRefBit
enum {
Flags0 = traits<typename remove_all<typename ExpressionType::Nested>::type >::Flags,
Flags = Flags0 & ~NestByRefBit
LvalueBitFlag = is_lvalue<ExpressionType>::value ? LvalueBit : 0,
Flags = (Flags0 & ~(NestByRefBit | LvalueBit)) | LvalueBitFlag
};
};
}

22
test/array_for_matrix.cpp
View File

@ -235,12 +235,31 @@ template<typename MatrixTraits> void resize(const MatrixTraits& t)
VERIFY(a1.size()==cols);
}
template<int>
void regression_bug_654()
{
ArrayXf a = RowVectorXf(3);
VectorXf v = Array<float,1,Dynamic>(3);
}
// Check propagation of LvalueBit through Array/Matrix-Wrapper
template<int>
void regrrssion_bug_1410()
{
const Matrix4i M;
const Array4i A;
ArrayWrapper<const Matrix4i> MA = M.array();
MA.row(0);
MatrixWrapper<const Array4i> AM = A.matrix();
AM.row(0);
VERIFY((internal::traits<ArrayWrapper<const Matrix4i> >::Flags&LvalueBit)==0);
VERIFY((internal::traits<MatrixWrapper<const Array4i> >::Flags&LvalueBit)==0);
VERIFY((internal::traits<ArrayWrapper<Matrix4i> >::Flags&LvalueBit)==LvalueBit);
VERIFY((internal::traits<MatrixWrapper<Array4i> >::Flags&LvalueBit)==LvalueBit);
}
void test_array_for_matrix()
{
for(int i = 0; i < g_repeat; i++) {
@ -280,5 +299,6 @@ void test_array_for_matrix()
CALL_SUBTEST_5( resize(MatrixXf(internal::random<int>(1,EIGEN_TEST_MAX_SIZE), internal::random<int>(1,EIGEN_TEST_MAX_SIZE))) );
CALL_SUBTEST_6( resize(MatrixXi(internal::random<int>(1,EIGEN_TEST_MAX_SIZE), internal::random<int>(1,EIGEN_TEST_MAX_SIZE))) );
}
CALL_SUBTEST_6( regression_bug_654() );
CALL_SUBTEST_6( regression_bug_654<0>() );
CALL_SUBTEST_6( regrrssion_bug_1410<0>() );
}