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  16. <title>Disabling (Debugging with GDB)</title>
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  57. <a name="Disabling"></a>
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  59. <p>
  60. Next: <a href="Conditions.html#Conditions" accesskey="n" rel="next">Conditions</a>, Previous: <a href="Delete-Breaks.html#Delete-Breaks" accesskey="p" rel="prev">Delete Breaks</a>, Up: <a href="Breakpoints.html#Breakpoints" accesskey="u" rel="up">Breakpoints</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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  62. <hr>
  63. <a name="Disabling-Breakpoints"></a>
  64. <h4 class="subsection">5.1.5 Disabling Breakpoints</h4>
  65. <a name="index-enable_002fdisable-a-breakpoint"></a>
  66. <p>Rather than deleting a breakpoint, watchpoint, or catchpoint, you might
  67. prefer to <em>disable</em> it. This makes the breakpoint inoperative as if
  68. it had been deleted, but remembers the information on the breakpoint so
  69. that you can <em>enable</em> it again later.
  70. </p>
  71. <p>You disable and enable breakpoints, watchpoints, and catchpoints with
  72. the <code>enable</code> and <code>disable</code> commands, optionally specifying
  73. one or more breakpoint numbers as arguments. Use <code>info break</code> to
  74. print a list of all breakpoints, watchpoints, and catchpoints if you
  75. do not know which numbers to use.
  76. </p>
  77. <p>Disabling and enabling a breakpoint that has multiple locations
  78. affects all of its locations.
  79. </p>
  80. <p>A breakpoint, watchpoint, or catchpoint can have any of several
  81. different states of enablement:
  82. </p>
  83. <ul>
  84. <li> Enabled. The breakpoint stops your program. A breakpoint set
  85. with the <code>break</code> command starts out in this state.
  86. </li><li> Disabled. The breakpoint has no effect on your program.
  87. </li><li> Enabled once. The breakpoint stops your program, but then becomes
  88. disabled.
  89. </li><li> Enabled for a count. The breakpoint stops your program for the next
  90. N times, then becomes disabled.
  91. </li><li> Enabled for deletion. The breakpoint stops your program, but
  92. immediately after it does so it is deleted permanently. A breakpoint
  93. set with the <code>tbreak</code> command starts out in this state.
  94. </li></ul>
  95. <p>You can use the following commands to enable or disable breakpoints,
  96. watchpoints, and catchpoints:
  97. </p>
  98. <dl compact="compact">
  99. <dd><a name="index-disable"></a>
  100. <a name="index-dis-_0028disable_0029"></a>
  101. </dd>
  102. <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>
  103. <dd><p>Disable the specified breakpoints&mdash;or all breakpoints, if none are
  104. listed. A disabled breakpoint has no effect but is not forgotten. All
  105. options such as ignore-counts, conditions and commands are remembered in
  106. case the breakpoint is enabled again later. You may abbreviate
  107. <code>disable</code> as <code>dis</code>.
  108. </p>
  109. <a name="index-enable"></a>
  110. </dd>
  111. <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>
  112. <dd><p>Enable the specified breakpoints (or all defined breakpoints). They
  113. become effective once again in stopping your program.
  114. </p>
  115. </dd>
  116. <dt><code>enable <span class="roman">[</span>breakpoints<span class="roman">]</span> once <var>list</var>&hellip;</code></dt>
  117. <dd><p>Enable the specified breakpoints temporarily. <small>GDB</small> disables any
  118. of these breakpoints immediately after stopping your program.
  119. </p>
  120. </dd>
  121. <dt><code>enable <span class="roman">[</span>breakpoints<span class="roman">]</span> count <var>count</var> <var>list</var>&hellip;</code></dt>
  122. <dd><p>Enable the specified breakpoints temporarily. <small>GDB</small> records
  123. <var>count</var> with each of the specified breakpoints, and decrements a
  124. breakpoint&rsquo;s count when it is hit. When any count reaches 0,
  125. <small>GDB</small> disables that breakpoint. If a breakpoint has an ignore
  126. count (see <a href="Conditions.html#Conditions">Break Conditions</a>), that will be
  127. decremented to 0 before <var>count</var> is affected.
  128. </p>
  129. </dd>
  130. <dt><code>enable <span class="roman">[</span>breakpoints<span class="roman">]</span> delete <var>list</var>&hellip;</code></dt>
  131. <dd><p>Enable the specified breakpoints to work once, then die. <small>GDB</small>
  132. deletes any of these breakpoints as soon as your program stops there.
  133. Breakpoints set by the <code>tbreak</code> command start out in this state.
  134. </p></dd>
  135. </dl>
  136. <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;
  137. subsequently, they become disabled or enabled only when you use one of
  138. the commands above. (The command <code>until</code> can set and delete a
  139. breakpoint of its own, but it does not change the state of your other
  140. breakpoints; see <a href="Continuing-and-Stepping.html#Continuing-and-Stepping">Continuing and
  141. Stepping</a>.)
  142. </p>
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