[petsc-users] Bug in ex14f.F90 when debug flags are used?

[Danyang Su]

Thanks, Satish.

Danyang

On 2020-06-05, 2:11 PM, "Satish Balay" <balay at mcs.anl.gov> wrote:

    VecGetArray() is for F77 - it relies on  out-of-bound access.

    The safer call is  VecGetArrayF90()

    Now that PETSc requires F90  - perhaps VecGetArray() should be deprecated [and all examples fixed to use VecGetArrayF90]..

    Satish

    On Fri, 5 Jun 2020, Danyang Su wrote:

    > Hi All,
    > 
    >  
    > 
    > I have a question regarding the following example. 
    > 
    > https://www.mcs.anl.gov/petsc/petsc-current/src/ksp/ksp/tutorials/ex14f.F90.html
    > 
    >  
    > 
    >  
    > 
    > When debug flags are used in the make file, the code crashed with following error.
    > 
    >  
    > 
    > At line 335 of file ex14f.F90
    > 
    > Fortran runtime error: Index '-14450582413' of dimension 1 of array 'xx' below lower bound of 1
    > 
    >  
    > 
    > FFLAGS           = -g -fcheck=all -fbacktrace -Wall
    > 
    > CPPFLAGS         = -g -fcheck=all -fbacktrace -Wall
    > 
    >  
    > 
    > Does this make sense?
    > 
    >  
    > 
    > Danyang
    > 
    >