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Details

Type: Bug
Resolution: Done
Priority: Not Evaluated
Fix Version/s: None
Affects Version/s: Qt Creator 2.3.0
Component/s: Debugger
Labels:
- beta230
Environment:
Windows 7, 64 bit
using
MS VC 2010 Express (x86) compiler
Debugging Tools for Windows (64 bit)

Qt version: 4.7.4

Commits:
58faedc4e56a871828c88ebb72b57f1d46afde85

Description

Steps to reproduce:

Create mixed QML/C++ , set BP on empty line in main.cpp
Run into breakpoint: Debugger stops, state is not set correctly (all icons disabled)

Note: Seems to be related to startup situation, see attached (debug.log).

Reproduced with CDB, g++, Linux, windows.

Debugging cannot be done when setting a breakpoint directly on the main().
This only happens when the QML debugging is enabled.

The buttons (and also the menu items) for "step over", "step in" and so on aren't enabled, so debugger seems to hang

Actually I only can use a work-around for that:
1. on the Application Output: attach debugger to this process
2. now you can press either "step in" or "step over" (no matter which one) - then this process seems to hang too
3. now go to Menubar->Debug->Abort Debugging and "normal" debugging should work

CDB debugger output:

sStarting debugger 'QmlCppEngine' for ABI 'x86-windows-msvc2010-pe-32bit'...
dStart parameters: 'damn' mode: 1
dABI: x86-windows-msvc2010-pe-32bit
dExecutable: C:\Testing\Tutorials\damn-build-desktop-Qt_aus_PATH_Debug\debug\damn.exe "-qmljsdebugger=port:3768,block"
dDirectory: C:\Testing\Tutorials\damn-build-desktop-Qt_aus_PATH_Debug
dDebugger: C:\Program Files\Debugging Tools For Windows (x64)\cdb.exe
dProject: C:\Testing\Tutorials\damn (built: C:\Testing\Tutorials\damn-build-desktop-Qt_aus_PATH_Debug)
dQt: C:\repos\qt
dQML server: 127.0.0.1:3768
d
dDebugger settings: 
dUseAlternatingRowColours: false  (default: false)
dFontSizeFollowsEditor: false  (default: false)
dUseMessageBoxForSignals: true  (default: true)
dAutoQuit: false  (default: false)
dLogTimeStamps: false  (default: false)
dVerboseLog: false  (default: false)
dCloseBuffersOnExit: false  (default: false)
dSwitchModeOnExit: false  (default: false)
dUseDebuggingHelper: true  (default: true)
dUseCodeModel: true  (default: true)
dShowThreadNames: false  (default: false)
dUseToolTips: true  (default: false)  ***
dUseToolTipsInLocalsView: false  (default: false)
dUseToolTipsInBreakpointsView: true  (default: false)  ***
dUseAddressInBreakpointsView: false  (default: false)
dUseAddressInStackView: false  (default: false)
dRegisterForPostMortem: false  (default: false)
dLoadGdbInit: true  (default: true)
dScriptFile:   (default: )
dWatchdogTimeout: 20  (default: 20)
dTargetAsync: false  (default: false)
dMaximalStackDepth: 20  (default: 20)
dAlwaysAdjustStackColumnWidths: false  (default: false)
dShowStandardNamespace: true  (default: true)
dShowQtNamespace: true  (default: true)
dSortStructMembers: true  (default: true)
dAutoDerefPointers: true  (default: true)
dAlwaysAdjustLocalsColumnWidths: false  (default: false)
dListSourceFiles: false  (default: false)
dSkipKnownFrames: false  (default: false)
dEnableReverseDebugging: false  (default: false)
dAllPluginBreakpoints: true  (default: true)
dSelectedPluginBreakpoints: false  (default: false)
dAdjustBreakpointLocations: true  (default: true)
dAlwaysAdjustBreakpointsColumnWidths: false  (default: false)
dNoPluginBreakpoints: false  (default: false)
dSelectedPluginBreakpointsPattern: .*  (default: .*)
dBreakOnThrow: false  (default: false)
dBreakOnCatch: false  (default: false)
dBreakOnWarning: false  (default: false)
dAlwaysAdjustRegistersColumnWidths: false  (default: false)
dAlwaysAdjustSnapshotsColumnWidths: false  (default: false)
dAlwaysAdjustThreadsColumnWidths: false  (default: false)
dAlwaysAdjustModulesColumnWidths: false  (default: false)
dState changed from DebuggerNotReady(0) to EngineSetupRequested(1).
dQUEUE: SETUP ENGINE
dCALL: SETUP ENGINE
dState changed from DebuggerNotReady(0) to EngineSetupRequested(1).
dQUEUE: SETUP ENGINE
dState changed from DebuggerNotReady(0) to EngineSetupRequested(1).
dQUEUE: SETUP ENGINE
dCALL: SETUP ENGINE
dNOTE: ENGINE SETUP OK
dState changed from EngineSetupRequested(1) to EngineSetupOk(3).
dQUEUE: SETUP INFERIOR
dCALL: SETUP ENGINE
 Launching C:\Program Files\Debugging Tools For Windows (x64)\cdb.exe -aqtcreatorcdbext.dll -lines -G -c .idle_cmd !qtcreatorcdbext.idle -y symsrv*symsrv.dll*C:\Users\chris\AppData\Local\Temp\symbolcache*http://msdl.microsoft.com/download/symbols C:\Testing\Tutorials\damn-build-desktop-Qt_aus_PATH_Debug\debug\damn.exe "-qmljsdebugger=port:3768,block"
 using C:\Testing\Qt\qtcreator-2.2.81\lib\qtcreatorcdbext64\qtcreatorcdbext.dll of 29.06.2011 09:56:58.
 C:\Program Files\Debugging Tools For Windows (x64)\cdb.exe running as 4160
 Microsoft (R) Windows Debugger Version 6.12.0002.633 AMD64
 Copyright (c) Microsoft Corporation. All rights reserved.
 CommandLine: C:\Testing\Tutorials\damn-build-desktop-Qt_aus_PATH_Debug\debug\damn.exe "-qmljsdebugger=port:3768,block"
 Symbol search path is: symsrv*symsrv.dll*C:\Users\chris\AppData\Local\Temp\symbolcache*http://msdl.microsoft.com/download/symbols
 Executable search path is: 
 ModLoad: 00000000`00c20000 00000000`00c8e000   damn.exe
 ModLoad: 00000000`77c20000 00000000`77dc9000   ntdll.dll
 ModLoad: 00000000`77e00000 00000000`77f80000   ntdll32.dll
 ModLoad: 00000000`74400000 00000000`7443f000   C:\Windows\SYSTEM32\wow64.dll
 ModLoad: 00000000`743a0000 00000000`743fc000   C:\Windows\SYSTEM32\wow64win.dll
 ModLoad: 00000000`74390000 00000000`74398000   C:\Windows\SYSTEM32\wow64cpu.dll
 (f54.1390): Break instruction exception - code 80000003 (first chance)
 ntdll!LdrpDoDebuggerBreak+0x30:
 00000000`77cccb60 cc              int     3
 cdb: Reading initial command '.idle_cmd !qtcreatorcdbext.idle'
 Execute when idle: !qtcreatorcdbext.idle
 0:000>
<l+t
<l+s
dNOTE: ENGINE SETUP OK
dState changed from EngineSetupRequested(1) to EngineSetupOk(3).
dNOTE: ENGINE SETUP OK
dState changed from EngineSetupRequested(1) to EngineSetupOk(3).
dQUEUE: SETUP INFERIOR
dState changed from EngineSetupOk(3) to InferiorSetupRequested(4).
dQUEUE: SETUP INFERIOR
dQUEUE: SETUP INFERIOR
dCALL: SETUP INFERIOR
dState changed from EngineSetupOk(3) to InferiorSetupRequested(4).
dQUEUE: SETUP INFERIOR
dState changed from EngineSetupOk(3) to InferiorSetupRequested(4).
dQUEUE: SETUP INFERIOR
dCALL: SETUP INFERIOR
dNOTE: INFERIOR SETUP OK
dState changed from InferiorSetupRequested(4) to InferiorSetupOk(6).
dCALL: SETUP INFERIOR
<bu3 `damn!C:\Testing\Tutorials\damn\main.cpp:6`
<!qtcreatorcdbext.breakpoints -t 0 -v
<sxn 0x4000001f
<.asm source_line
<!qtcreatorcdbext.pid -t 1
dATTEMPT SYNC
dJSDebugger sending BREAKPOINTS []
 Source options are 1:
      1/t - Step/trace by source line
 Source options are 5:
      1/t - Step/trace by source line
      4/s - List source code at prompt
 Obtained breakpoint 0x18d624 (#3), at 0xc21125, module: 'damn'
 All breakpoints have been resolved.
 
 Assembly options: source_line
 Qt Creator CDB extension version 0.1 64 bit built Jun 29 2011.
dTaking notice of pid 3924
dNOTE: INFERIOR SETUP OK
dState changed from InferiorSetupRequested(4) to InferiorSetupOk(6).
dNOTE: INFERIOR SETUP OK
dState changed from InferiorSetupRequested(4) to InferiorSetupOk(6).
dState changed from InferiorSetupOk(6) to EngineRunRequested(7).
dQUEUE: RUN ENGINE
dCALL: RUN ENGINE
dState changed from InferiorSetupOk(6) to EngineRunRequested(7).
dQUEUE: RUN ENGINE
dState changed from InferiorSetupOk(6) to EngineRunRequested(7).
dQUEUE: RUN ENGINE
dCALL: RUN ENGINE
dCALL: RUN ENGINE
<g
dNOTE: ENGINE RUN AND INFERIOR RUN OK
dState changed from EngineRunRequested(7) to InferiorRunOk(11).
 ModLoad: 00000000`77a00000 00000000`77b1f000   WOW64_IMAGE_SECTION
 ModLoad: 00000000`76300000 00000000`76410000   WOW64_IMAGE_SECTION
 ModLoad: 00000000`77a00000 00000000`77b1f000   NOT_AN_IMAGE
 ModLoad: 00000000`77b20000 00000000`77c1a000   NOT_AN_IMAGE
 ModLoad: 00000000`76300000 00000000`76410000   C:\Windows\syswow64\kernel32.dll
 ModLoad: 00000000`77270000 00000000`772b6000   C:\Windows\syswow64\KERNELBASE.dll
 ModLoad: 00000000`61930000 00000000`61e02000   C:\repos\qt\lib\QtDeclaratived4.dll
 ModLoad: 00000000`61690000 00000000`61924000   C:\repos\qt\lib\QtScriptd4.dll
 ModLoad: 00000000`752d0000 00000000`75302000   C:\Windows\SysWOW64\WINMM.dll
 ModLoad: 00000000`77690000 00000000`7773c000   C:\Windows\syswow64\msvcrt.dll
 ModLoad: 00000000`770f0000 00000000`771f0000   C:\Windows\syswow64\USER32.dll
 ModLoad: 00000000`761c0000 00000000`76250000   C:\Windows\syswow64\GDI32.dll
 ModLoad: 00000000`75b60000 00000000`75b6a000   C:\Windows\syswow64\LPK.dll
 ModLoad: 00000000`777a0000 00000000`7783d000   C:\Windows\syswow64\USP10.dll
 ModLoad: 00000000`75ab0000 00000000`75b50000   C:\Windows\syswow64\ADVAPI32.dll
 ModLoad: 00000000`75f10000 00000000`75f29000   C:\Windows\SysWOW64\sechost.dll
 ModLoad: 00000000`759c0000 00000000`75ab0000   C:\Windows\syswow64\RPCRT4.dll
 ModLoad: 00000000`75960000 00000000`759c0000   C:\Windows\syswow64\SspiCli.dll
 ModLoad: 00000000`75950000 00000000`7595c000   C:\Windows\syswow64\CRYPTBASE.dll
 ModLoad: 00000000`61290000 00000000`61681000   C:\repos\qt\lib\QtCored4.dll
 ModLoad: 00000000`75f90000 00000000`760ec000   C:\Windows\syswow64\ole32.dll
 ModLoad: 00000000`75d20000 00000000`75d55000   C:\Windows\syswow64\WS2_32.dll
 ModLoad: 00000000`75b50000 00000000`75b56000   C:\Windows\syswow64\NSI.dll
 ModLoad: 00000000`64580000 00000000`64637000   C:\Windows\SysWOW64\MSVCP100D.dll
 ModLoad: 00000000`62e00000 00000000`62f72000   C:\Windows\SysWOW64\MSVCR100D.dll
 ModLoad: 00000000`64520000 00000000`64576000   C:\repos\qt\lib\QtSqld4.dll
 ModLoad: 00000000`60cf0000 00000000`61290000   C:\repos\qt\lib\QtXmlPatternsd4.dll
 ModLoad: 00000000`60b80000 00000000`60cea000   C:\repos\qt\lib\QtNetworkd4.dll
 ModLoad: 00000000`5c950000 00000000`5d72e000   C:\repos\qt\lib\QtGuid4.dll
 ModLoad: 00000000`771f0000 00000000`7726b000   C:\Windows\syswow64\COMDLG32.dll
 ModLoad: 00000000`76250000 00000000`762a7000   C:\Windows\syswow64\SHLWAPI.dll
 ModLoad: 00000000`755e0000 00000000`7577e000   C:\Windows\WinSxS\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_41e6975e2bd6f2b2\COMCTL32.dll
 ModLoad: 00000000`764a0000 00000000`770ea000   C:\Windows\syswow64\SHELL32.dll
 ModLoad: 00000000`75e80000 00000000`75f0f000   C:\Windows\syswow64\OLEAUT32.dll
 ModLoad: 00000000`77740000 00000000`777a0000   C:\Windows\syswow64\IMM32.dll
 ModLoad: 00000000`760f0000 00000000`761bc000   C:\Windows\syswow64\MSCTF.dll
 ModLoad: 00000000`742e0000 00000000`74331000   C:\Windows\SysWOW64\WINSPOOL.DRV
 (f54.1390): WOW64 breakpoint - code 4000001f (first chance)
s
sException at 0x77ea0f3b, code: 0x4000001f: Win32 x86 emulation subsystem breakpoint hit, flags=0x0 in ntdll32!LdrpDoDebuggerBreak
 Breakpoint 3 hit
 >    6:     QApplication app(argc, argv);
 damn!main+0x25:
     6 00c21125 6804070400      push    40704h
sStopped at breakpoint 3 (3) in thread 0.
dNOTE: INFERIOR SPONTANEOUS STOP
dState changed from InferiorRunOk(11) to InferiorStopOk(14).
<!qtcreatorcdbext.locals -t 2 -D -c -W 0

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debuglog.txt
7 kB
08 Jul '11 17:14

Issue Links

relates to

QTCREATORBUG-5400 There is no "continue" button when debugging stop at "main.cpp"

Closed

QTCREATORBUG-5407 Strange activities of debugger when debugging Qt Quick application

Closed

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Mixed QML/C++-Debugging: Debugging "hangs" when hitting a C++ breakpoint by source line for which a location correction triggers during startup

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