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Revised and updated images for Debugging a project page
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L. Frank Turovich
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3 changed files with 86 additions and 46 deletions
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<p>The debugger lets you control the execution of your program by setting
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breakpoints, suspending executed programs, stepping through your code, and
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examining the contents of variables.</p>
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<p>To debug a project:</p>
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<h2>To debug a project:</h2>
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<ol>
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<li>Click <strong>Run > Debug Configurations...</strong>.<p>The Debug Configurations dialog opens.</li>
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<li>Double-click <strong>C/C++ Application</strong>.</li>
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<li>In the <strong>Name</strong> field, type <strong>Hello World</strong>.</li>
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<p>You can now select this debug launch configuration by name the next time
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that you debug this project.</p>
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<li>In the <strong>Project</strong> box, type or choose your project, e.g. <strong>HelloWorld</strong>.
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<br>
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Your executable should be selected under "C/C++ Application."
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<br>If not, the <strong>Search Project</strong> button should find the executable in the project.
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<p> </p>
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<li>Click the <strong>Run > Debug Configurations...</strong> menu option.<br>
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<br>
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<p>The <strong>Debug</strong> <strong>Configurations</strong> dialog opens.<br>
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<br>
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<img src="../images/cdt_w_debug_configurations_01.png" width="873" height="662"><br>
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<br>
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</li>
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<ul>
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<li>If you see the error "[Debugger]: No debugger available", select the Debugger tab
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and choose a valid debugger for your platform (e.g. gdb/mi).
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</li>
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</ul>
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<li>Double-click <strong>C/C++ Application</strong> to create a new launch configuration.<br>
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<br>
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<img src="../images/cdt_w_debug_configurations_02.png" width="763" height="601"><br>
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<br>
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<p>If a project is selected in the <a href="../reference/cdt_u_project_explorer_view.htm">Project Explorer</a> view the following data is automatically entered, take a moment to verify its accuracy or change as needed. <br>
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<br>
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</p>
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<ol type="a">
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<li>In the <strong>Name</strong> edit box, type the project name, like <strong>Hello World</strong>.<br>
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<br>
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You can now select this debug launch configuration by name the next time
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that you debug this project.<br>
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<br>
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</li>
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<li>In the <strong>C/C++ Application</strong> edit box, type the name of the executable if its not already entered. <br>
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<br>
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If not, click the <strong>Search Project</strong> button to locate the executable in the project.<br>
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<br>
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</li>
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<li>
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<p>In the <strong>Project</strong> edit box, type or choose your project, e.g. <strong>HelloWorld</strong>.<br>
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</p>
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<p> </p>
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<p><strong>NOTE</strong> If you see the error "<span class="typewriter">[Debugger]: No debugger available</span>", select the <strong>Debugger</strong> tab
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and choose a valid debugger for your platform (e.g. <span class="typewriter">gdb/mi</span>). <br>
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<br>
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</p>
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</li>
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</ol>
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</li>
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<li>Click <strong>Debug</strong>.</li>
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<p>You will be prompted to switch to the Debug Perspective. Click <strong>Yes</strong></p>
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<p>You will now see the debug perspective with the hello.exe application window open.
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<p>You may be prompted to switch to the <strong>Debug</strong> perspective. Click <strong>Yes</strong></p>
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<p>The <strong>Debug</strong> perspective appears with the <span class="typewriter">helloworld.exe</span> application window open.
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The C/C++ editor repositions in the perspective.</p>
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<ul>
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<li>If you see an error in the editor "Can't find source file" you can use the buttons provided
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to point to your source file, e.g. "Locate File."
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</li>
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</ul>
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<li>In the left margin of the main.cpp window, double-click to set a
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breakpoint on:<br>
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cout << "You just entered"
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<br>You'll see an icon there indicating the breakpoint is set.</br>
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</li>
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<li>Click <strong>Run > Resume</strong>.
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<br>Or, you can use the <strong>Resume</strong> button (green arrow) on the toolbar <em>of the Debug View</em>
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</li>
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<li>When prompted, in the Console view, type a value other than 'm', and hit Enter/Return.<br>
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The breakpoint will be hit.</li>
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<li>In the <strong>Variables</strong> view, verify that the variable is not 'm'.</li>
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<li>Click <strong>Run > Resume</strong>.</li>
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<li>When prompted, again type a value other than 'm' in the Console view, and press Enter/Return.</li>
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<p>The breakpoint will be hit.</p>
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<li>In the <strong>Variables</strong> view, verify that the variable is not 'm'.</li>
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<li>In the <strong>Variables</strong> view, right-click the input variable, and select <strong>Change Value...</strong>
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and type <strong>'m'</strong> <em>between the single quotes</em> and hit <strong>OK</strong>.</li>
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<li>Click <strong>Run > Resume</strong>.</li>
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<p>The output in the hello.exe application window is:<br>
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"You just entered m, you need to enter m to exit."
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<li>The application terminates and the debug session ends. The debug
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perspective remains open.</li>
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</ol>
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<blockquote>
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<p><strong>NOTE</strong> If you see the error "<span class="typewriter">Can't find source file</span>" in the editor view, use the <strong>Locate File</strong> button
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to locate your source file.<br>
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</p>
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</blockquote>
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<ol>
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<li>In the left margin of the <span class="typewriter">main.cpp</span> window, double-click to set a
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breakpoint on:<br>
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<br>
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<span class="typewriter">cout << "You just entered"
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</span><br>
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<br>
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You'll see a blue circle (<img src="../images/icon_breakpoint_obj.gif" alt="Breakpoint" width="16" height="16" align="absmiddle">) there indicating the breakpoint is set.</br>
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<br>
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<br>
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</li>
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<li>Click <strong>Run > Resume</strong>.
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<br>
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<br>
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Or, you can use the <strong>Resume</strong> button (<img src="../images/icon_db_resume.png" alt="Resume" width="19" height="14" align="absmiddle">) on the toolbar of the <strong>Debug</strong> view
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.<br>
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<br>
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</li>
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<li>When prompted, in the <strong>Console</strong> view, type a value other than 'm', and press Enter.<br>
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<br>
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The breakpoint will be hit.<br>
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<br>
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</li>
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<li>In the <strong>Variables</strong> view, verify that the variable is not 'm'.<br>
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<br>
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</li>
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<li>Click <strong>Run > Resume</strong>.<br>
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<br>
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</li>
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<li>When prompted, again type a value other than 'm' in the <a href="../reference/cdt_u_console_view.htm">Console</a> view, and press Enter.</li>
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<p>The breakpoint will be hit.</p>
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<li>In the <strong>Variables</strong> view, verify that the variable is not 'm'.<br>
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<br>
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</li>
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<li>In the <strong>Variables</strong> view, right-click the input variable, and select <strong>Change Value...</strong>
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and type <strong>'m'</strong> <em>between the single quotes</em> and hit <strong>OK</strong>.<br>
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<br>
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</li>
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<li>Click <strong>Run > Resume</strong>.</li>
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<p>The output in the <span class="typewriter">helloworld.exe</span> application window is: "<span class="typewriter">You just entered m, you need to enter m to exit.</span>"
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<li>The application terminates and the debug session ends. The <strong>Debug</strong> perspective remains open.</li>
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</ol>
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<p>To learn more about debugging, see the related debug conceptual topics.</p>
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<p align="left"> <a href="cdt_w_build.htm">
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doc/org.eclipse.cdt.doc.user/images/cdt_w_debug_configurations_01.png
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