doc/gdb/Disabling.html

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<a name="Disabling"></a>
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<a name="Disabling-Breakpoints"></a>
<h4 class="subsection">5.1.5 Disabling Breakpoints</h4>

<a name="index-enable_002fdisable-a-breakpoint"></a>
<p>Rather than deleting a breakpoint, watchpoint, or catchpoint, you might
prefer to <em>disable</em> it.  This makes the breakpoint inoperative as if
it had been deleted, but remembers the information on the breakpoint so
that you can <em>enable</em> it again later.
</p>
<p>You disable and enable breakpoints, watchpoints, and catchpoints with
the <code>enable</code> and <code>disable</code> commands, optionally specifying
one or more breakpoint numbers as arguments.  Use <code>info break</code> to
print a list of all breakpoints, watchpoints, and catchpoints if you
do not know which numbers to use.
</p>
<p>Disabling and enabling a breakpoint that has multiple locations
affects all of its locations.
</p>
<p>A breakpoint, watchpoint, or catchpoint can have any of several
different states of enablement:
</p>
<ul>
<li> Enabled.  The breakpoint stops your program.  A breakpoint set
with the <code>break</code> command starts out in this state.
</li><li> Disabled.  The breakpoint has no effect on your program.
</li><li> Enabled once.  The breakpoint stops your program, but then becomes
disabled.
</li><li> Enabled for a count.  The breakpoint stops your program for the next
N times, then becomes disabled.
</li><li> Enabled for deletion.  The breakpoint stops your program, but
immediately after it does so it is deleted permanently.  A breakpoint
set with the <code>tbreak</code> command starts out in this state.
</li></ul>

<p>You can use the following commands to enable or disable breakpoints,
watchpoints, and catchpoints:
</p>
<dl compact="compact">
<dd><a name="index-disable"></a>
<a name="index-dis-_0028disable_0029"></a>
</dd>
<dt><code>disable <span class="roman">[</span>breakpoints<span class="roman">]</span> <span class="roman">[</span><var>list</var>&hellip;<span class="roman">]</span></code></dt>
<dd><p>Disable the specified breakpoints&mdash;or all breakpoints, if none are
listed.  A disabled breakpoint has no effect but is not forgotten.  All
options such as ignore-counts, conditions and commands are remembered in
case the breakpoint is enabled again later.  You may abbreviate
<code>disable</code> as <code>dis</code>.
</p>
<a name="index-enable"></a>
</dd>
<dt><code>enable <span class="roman">[</span>breakpoints<span class="roman">]</span> <span class="roman">[</span><var>list</var>&hellip;<span class="roman">]</span></code></dt>
<dd><p>Enable the specified breakpoints (or all defined breakpoints).  They
become effective once again in stopping your program.
</p>
</dd>
<dt><code>enable <span class="roman">[</span>breakpoints<span class="roman">]</span> once <var>list</var>&hellip;</code></dt>
<dd><p>Enable the specified breakpoints temporarily.  <small>GDB</small> disables any
of these breakpoints immediately after stopping your program.
</p>
</dd>
<dt><code>enable <span class="roman">[</span>breakpoints<span class="roman">]</span> count <var>count</var> <var>list</var>&hellip;</code></dt>
<dd><p>Enable the specified breakpoints temporarily.  <small>GDB</small> records
<var>count</var> with each of the specified breakpoints, and decrements a
breakpoint&rsquo;s count when it is hit.  When any count reaches 0,
<small>GDB</small> disables that breakpoint.  If a breakpoint has an ignore
count (see <a href="Conditions.html#Conditions">Break Conditions</a>), that will be
decremented to 0 before <var>count</var> is affected.
</p>
</dd>
<dt><code>enable <span class="roman">[</span>breakpoints<span class="roman">]</span> delete <var>list</var>&hellip;</code></dt>
<dd><p>Enable the specified breakpoints to work once, then die.  <small>GDB</small>
deletes any of these breakpoints as soon as your program stops there.
Breakpoints set by the <code>tbreak</code> command start out in this state.
</p></dd>
</dl>

<p>Except for a breakpoint set with <code>tbreak</code> (see <a href="Set-Breaks.html#Set-Breaks">Setting Breakpoints</a>), breakpoints that you set are initially enabled;
subsequently, they become disabled or enabled only when you use one of
the commands above.  (The command <code>until</code> can set and delete a
breakpoint of its own, but it does not change the state of your other
breakpoints; see <a href="Continuing-and-Stepping.html#Continuing-and-Stepping">Continuing and
Stepping</a>.)
</p>
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