Segfaults in __mm_loadh_pd with clang 2.8

Submitted by Benoit Jacob

Assigned to Nobody

Link to original bugzilla bug (#201)

Description

Right now 51% tests are failing with Clang 2.8 / linux / x86-64 ! Looking at nomalloc_2, I get a segfault with this stack:

Program received signal SIGSEGV, Segmentation fault.  
0x0000000000480827 in ploadu (from=0x7fffffffdf60) at /home/bjacob/eigen/Eigen/src/Core/arch/SSE/PacketMath.h:270  
270       res = _mm_loadh_pd(res,from+1);  
(gdb) bt  
#0  0x0000000000480827 in ploadu (from=0x7fffffffdf60) at /home/bjacob/eigen/Eigen/src/Core/arch/SSE/PacketMath.h:270  
#1  0x0000000000480795 in ploadt (from=0x7fffffffdf60) at /home/bjacob/eigen/Eigen/src/Core/GenericPacketMath.h:288  
#2  0x0000000000494dc0 in packet (this=0x7fffffffb6a0, index=0) at /home/bjacob/eigen/Eigen/src/Core/MapBase.h:135  
#3  0x0000000000494d19 in packet (this=0x7fffffffb6a0, index=0) at /home/bjacob/eigen/Eigen/src/Core/CwiseUnaryOp.h:133  
#4  0x0000000000494b4c in copyPacket (this=0x7fffffffb740, index=0, other=...) at /home/bjacob/eigen/Eigen/src/Core/SelfCwiseBinaryOp.h:134  
#5  0x00000000004947ba in run (dst=..., src=...) at /home/bjacob/eigen/Eigen/src/Core/Assign.h:422  
#6  0x0000000000494621 in lazyAssign (this=0x7fffffffb740, rhs=...) at /home/bjacob/eigen/Eigen/src/Core/SelfCwiseBinaryOp.h:150  
#7  0x0000000000494430 in run (dst=..., other=...) at /home/bjacob/eigen/Eigen/src/Core/Assign.h:534  
#8  0x00000000004943f2 in operator= (this=0x7fffffffb740, other=...) at /home/bjacob/eigen/Eigen/src/Core/Assign.h:574  
#9  0x000000000049435c in operator= (this=0x7fffffffb740, _rhs=...) at /home/bjacob/eigen/Eigen/src/Core/SelfCwiseBinaryOp.h:163  
#10 0x0000000000490913 in operator+= (this=0x7fffffffb960, other=...) at /home/bjacob/eigen/Eigen/src/Core/CwiseBinaryOp.h:236  
#11 0x00000000004a1bb2 in run (rows=4, cols=4, _lhs=0x7fffffffdf40, lhsStride=4, _rhs=0x7fffffffdf40, rhsIncr=1, _res=0x7fffffffdeb0, resIncr=1, alpha=1)  
    at /home/bjacob/eigen/Eigen/src/Core/products/TriangularMatrixVector.h:69  
#12 0x00000000004a4a07 in run (prod=..., dest=..., alpha=1) at /home/bjacob/eigen/Eigen/src/Core/products/TriangularMatrixVector.h:264  
#13 0x00000000004a4692 in scaleAndAddTo (this=0x7fffffffd200, dst=..., alpha=1) at /home/bjacob/eigen/Eigen/src/Core/products/TriangularMatrixVector.h:173  
#14 0x00000000004a4482 in scaleAndAddTo (this=0x7fffffffd200, dst=..., alpha=1) at /home/bjacob/eigen/Eigen/src/Core/ProductBase.h:124  
#15 0x00000000004a443e in evalTo (this=0x7fffffffd200, dst=...) at /home/bjacob/eigen/Eigen/src/Core/ProductBase.h:115  
#16 0x00000000004a43da in lazyAssign (this=0x7fffffffd258, other=...) at /home/bjacob/eigen/Eigen/src/Core/ProductBase.h:283  
#17 0x00000000004a436d in run (dst=..., other=...) at /home/bjacob/eigen/Eigen/src/Core/Assign.h:534  
#18 0x000000000047dc70 in operator= (this=0x7fffffffd250, other=...) at /home/bjacob/eigen/Eigen/src/Core/NoAlias.h:54  
#19 0x000000000047ba78 in nomalloc (m=...) at /home/bjacob/eigen/test/nomalloc.cpp:86  
#20 0x0000000000476efd in test_nomalloc () at /home/bjacob/eigen/test/nomalloc.cpp:174  
#21 0x0000000000476d21 in main (argc=1, argv=0x7fffffffe338) at /home/bjacob/eigen/test/main.h:546  

Blocking

#25 (closed)