Skip to main content
`Ctrl`+`K`

# PetscStackUpdateLine

in a function that has a `PetscFunctionBegin` or `PetscFunctionBeginUser` updates the stack line number to the current line number.

## Synopsis

    #include <petscsys.h>
    void PetscStackUpdateLine

Not Collective

## Notes

Using `PetscCall()` and friends automatically handles this process

In debug mode PETSc maintains a stack of the current function calls that can be used to help to quickly see where a problem has occurred, for example, when a signal is received. It is recommended to use the debugger if extensive information is needed to help debug the problem.

The default stack is a global variable called `petscstack`.

This is used by `PetscCall()` and is otherwise not like to be needed

## See Also

`PetscAttachDebugger()`, `PetscStackCopy()`, `PetscStackView()`, `PetscStackPushNoCheck()`, `PetscStackPop`, `PetscCall()`

## Level

developer

## Location

include/petscerror.h

Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages