My code was definitely compiled with "-g" but:

An error occurred in line <509> of file 
</scratch/00434/eijkhout/htmri25/Sources/dealii/dealii-9.7.1/source/lac/trilinos_solver.cc>
 
in function
    void dealii::TrilinosWrappers::SolverBase::do_solve(const 
Preconditioner &) [Preconditioner = 
dealii::TrilinosWrappers::PreconditionBase]
Additional information:
    AztecOO::Iterate error code -3: loss of precision

Stacktrace:
-----------
#0 
 /scratch/00434/eijkhout/htmri25/Binaries/dealii-9.7.1/lib/libdeal_II.so.9.7.1: 
void 
dealii::TrilinosWrappers::SolverBase::do_solve<dealii::TrilinosWrappers::PreconditionBase>(dealii::TrilinosWrappers::PreconditionBase
 
const&)
#1 
 /work2/00434/eijkhout/htmr_sandbox/installation-step32v2-intel25.3/step32v2: 
) [0x4d247d]
#2 
 /work2/00434/eijkhout/htmr_sandbox/installation-step32v2-intel25.3/step32v2: 
) [0x4cfe36]
#3 
 /work2/00434/eijkhout/htmr_sandbox/installation-step32v2-intel25.3/step32v2: 
) [0x4cc3bb]
#4 
 /work2/00434/eijkhout/htmr_sandbox/installation-step32v2-intel25.3/step32v2: 
) [0x4b64bd]
#5 
 /work2/00434/eijkhout/htmr_sandbox/installation-step32v2-intel25.3/step32v2: 
) [0x475950]
#6 
 /work2/00434/eijkhout/htmr_sandbox/installation-step32v2-intel25.3/step32v2: 
) [0x471f50]
#7  /usr/lib64/libc.so.6:
#8  /usr/lib64/libc.so.6: __libc_start_main
#9 
 /work2/00434/eijkhout/htmr_sandbox/installation-step32v2-intel25.3/step32v2: 
) [0x470745]
--------------------------------------------------------


How do I get a stacktrace of the D2 calls?

Victor.

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