However, in some Linux distributions, such as Arch Linux, debug output is sent to the system log. To override this behavior, select the Force logging to console check box.
To automatically map the source paths to a Qt version that has not been patched, select Add Qt Sources and browse to the location of the Qt source files. To specify a timeout for terminating non-responsive GDB processes, set the number of seconds to wait in the GDB timeout field.
The default value of 20 seconds should be sufficient for most applications, but if loading big libraries or listing source files takes much longer than that on slow machines, you should increase the value. To compress several steps into one step for less noisy debugging when stepping into code, select the Skip known frames when stepping check box. For example, the atomic reference counting code is skipped, and a single Step Into for a signal emission ends up directly in the slot connected to it.
To display a message box as soon as your application receives a signal, such as SIGSEGV, during debugging, select the Show a message box when receiving a signal check box.
GDB allows setting breakpoints on source lines for which no code was generated. To reflect such temporary changes by moving the breakpoint markers in the source code editor, select the Adjust breakpoint locations check box. To specify whether the dynamic or the static type of objects will be displayed, select the Use dynamic object type for display check box.
To allow reading the user's default. To use the default GDB pretty printers installed in your system or linked to the libraries your application uses, select the Load system GDB pretty printers check box.
To switch to the Intel style, select the Use Intel style disassembly check box. To have GDB automatically save a copy of its symbol index in a cache on disk and retrieve it from there when loading the same binary in the future, select the Use automatic symbol cache check box.
To execute GDB commands after GDB has been started, but before the debugged program is started or attached, and before the debugging helpers are initialized, enter them in the Additional Startup Commands field. You can add commands to further set up the target here, such as monitor reset or load. To execute simple Python commands, prefix them with python. To execute sequences of Python commands spanning multiple lines, prepend the block with python on a separate line, and append end on a separate line.
The settings give access to advanced or experimental functions of GDB. Enabling them may negatively impact your debugging experience, so use them with care. To stop when qWarning , qFatal , or abort is called, select the respective check box. To enable stepping backwards, select the Enable reverse debugging check box. This feature is very slow and unstable on the GDB side.
It exhibits unpredictable behavior when going backwards over system calls and is very likely to destroy your debugging session. To keep debugging all children after a fork, select the Debug all child processes check box.
If a console application does not start up properly in the configured console and the subsequent attach fails, you can diagnose the issue by using CDB's native console. Select the Use CDB console check box to override the console set in the Windows system environment variables. Note that the native console does not prompt on application exit. This catches runtime error messages caused by assert , for example. CDB enables setting breakpoints in comments or on source lines for which no code was generated.
To reflect such temporary changes by moving the breakpoint markers in the source code editor, select the Correct breakpoint location check box. For more information, see Setting Breakpoints. To use the abstraction layer provided by Python Dumper classes to create a description of data items displayed in the Locals and Expressions views, select the Use Python dumper check box.
For more information, see Debugging Helper Implementation. To add information about first-chance and second-chance exceptions to the Issues output pane, select the check boxes in the Add Exceptions to the Issues View group. To obtain debugging information for the operating system libraries for debugging Windows applications, add the Symbol Server provided by Microsoft to the symbol search path of the debugger:.
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Interacting with the Debugger You can use the Qt Creator Debug mode to inspect the state of your application while debugging. You can interact with the debugger in several ways, including the following: Go through a program line-by-line or instruction-by-instruction.
Interrupt running programs. Set breakpoints. Examine the contents of the call stack. Examine and modify contents of local and global variables. Examine and modify registers and memory contents of the debugged program. Examine the list of loaded shared libraries. Disassemble sections of code. Using the Debugger In Debug mode, you can use several views to interact with the program you are debugging.
To show and hide columns in views, toggle Show Column in the context menu. Once the program stops, Qt Creator: Retrieves data representing the call stack at the program's current position. Retrieves the contents of local variables. Examines Expressions. If you use a qmake based project in Qt Creator, you can set a flag in your run configuration, in Projects mode. In the run configuration, select Use debug version of frameworks. To obtain debugging information for the operating system libraries for debugging Windows applications, add the Symbol Server provided by Microsoft to the symbol search path of the debugger:.
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Make sure it is related to this specific page. For more general bugs and requests, please use the Qt Bug Tracker. RSS Atom. Supported Native Debugger Versions The debugger plugin supports different builds of the GDB debugger, both with and without the ability to use Python scripting. If it does not due to non-standard installation paths , please point the Debugger kit configuration dialog to the location. The 32bit version of cdb. The 64bit version can debug both 64bit and 32bit executables, however interrupting a 32bit executable with a 64bit debugger can result in a stacktrace of the Wow64 32bit emulation layer being displayed.
Qt Creator extends the command line debugger by loading an extension library into it qtcreatorcdbext. When launching debugging for the first time, you are prompted to set up a Symbol server , which adds a special entry to the symbol path of the debugger. The Symbol Server provides debugging information for operating system and compiler runtime libraries.
How do I load it? It tells me that it can see that I have Netscape, but do not have this plugin, that normally loads on start-up. I can't find anywhere to get it from
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