'm trying to use the heevr routine from lapack95 in fortran, but I'm getting segfault. I'm using the parallel studio xe 2016 composer edition for fortran update3. Here is a sample code, which shows the problem:
program test
use lapack95
implicit none
integer, parameter:: dp=kind(0.d0)
complex(dp), allocatable :: A(:,:)
real(dp), allocatable :: w(:)
integer :: n
n=20
allocate(A(n,n))
allocate(w(n))
A(:,:) = 0_dp
call heevr(A,w)
end program
I use the following command to compile:
ifort test.f90 -heap-arrays -check all -warn all -g -traceback -I${MKLROOT}/include/intel64/lp64 -I${MKLROOT}/include ${MKLROOT}/lib/intel64/libmkl_lapack95_lp64.a -Wl,--start-group ${MKLROOT}/lib/intel64/libmkl_intel_lp64.a ${MKLROOT}/lib/intel64/libmkl_core.a ${MKLROOT}/lib/intel64/libmkl_sequential.a -Wl,--end-group -lpthread -lm -ldl -o test.x
It complies fine, but when I run it a segmentation fault occurs:
forrtl: severe (174): SIGSEGV, segmentation fault occurred
Image PC Routine Line Source
test.x 0000000000C404E6 Unknown Unknown Unknown
libpthread.so.0 00007FC2936BA3D0 Unknown Unknown Unknown
test.x 0000000000C3FBEF Unknown Unknown Unknown
libpthread.so.0 00007FC2936BA3D0 Unknown Unknown Unknown
The segmentation fault does not occur if n<11 or if I use heevd instead of heevr. The stack size is set to unlimited.
