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<a name="Tasking-Support-when-Debugging-Core-Files"></a>
<h4 class="subsubsection">15.4.10.8 Tasking Support when Debugging Core Files</h4>
<a name="index-Ada-tasking-and-core-file-debugging"></a>

<p>When inspecting a core file, as opposed to debugging a live program,
tasking support may be limited or even unavailable, depending on
the platform being used.
For instance, on x86-linux, the list of tasks is available, but task
switching is not supported.
</p>
<p>On certain platforms, the debugger needs to perform some
memory writes in order to provide Ada tasking support.  When inspecting
a core file, this means that the core file must be opened with read-write
privileges, using the command &lsquo;<samp>&quot;set write on&quot;</samp>&rsquo; (see <a href="Patching.html#Patching">Patching</a>).
Under these circumstances, you should make a backup copy of the core
file before inspecting it with <small>GDB</small>.
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