C++ 为什么GDB不加载DLL？

请帮助我理解，为什么带有动态加载库的简单qt应用程序在

gdb

下运行，而更复杂的不是。Qt工具包我使用的是两者

这是我的测试应用程序构建（lib和exe）的方式：

以及我的复杂应用程序大楼：

g++ -c -pipe -Wall -Wextra -Werror -g -g -frtti -fexceptions -mthreads -Wall -Wextra -DUNICODE -DSIP_LIB -DQWT_DLL -DQT_DLL -DQT_WEBKIT_LIB -DQT_SVG_LIB -DQT_SQL_LIB -DQT_XMLPATTERNS_LIB -DQT_XML_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_THREAD_SUPPORT -I'../../../../Qt/4.8.6/include/QtCore' -I'../../../../Qt/4.8.6/include/QtNetwork' -I'../../../../Qt/4.8.6/include/QtGui' -I'../../../../Qt/4.8.6/include/QtXml' -I'../../../../Qt/4.8.6/include/QtXmlPatterns' -I'../../../../Qt/4.8.6/include/QtSql' -I'../../../../Qt/4.8.6/include/QtSvg' -I'../../../../Qt/4.8.6/include/QtWebKit' -I'../../../../Qt/4.8.6/include' -I'.' -I'../SIP_Common' -I'../SIP_Qwt' -I'../SIP_Qwt/src' -I'../../../../Qt/4.8.6/include/ActiveQt' -I'debug/mocs' -I'debug/uics' -I'../../../../Qt/4.8.6/mkspecs/win32-g++' -o debug/objs/moc_sbmrscwidget.o debug/mocs/moc_sbmrscwidget.cpp
g++ -export-dynamic -mthreads -shared -Wl,--out-implib,./debug/libWidgets.a -o debug/Widgets.dll object_script.Widgets.Debug  -L'c:/Qt/4.8.6/lib' -lCommon -L../SIP_Common/debug -lQwt_4 -L../SIP_Qwt/debug -lQtWebKitd4 -lQtSvgd4 -lQtSqld4 -lQtXmlPatternsd4 -lQtXmld4 -lQtGuid4 -lQtNetworkd4 -lQtCored4 
C:/devtools/mingw-i686-4.8.2-release-posix-dwarf-rt_v3-rev3/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.8.2/../../../../i686-w64-mingw32/bin/ld.exe: warning: --export-dynamic is not supported for PE targets, did you mean --export-all-symbols?

最后说明了库和exe构建标志，标志相同

当gdb启动时，我在QtCreator gdb输出中看到了具体的差异。对于简单应用程序，gdb开始加载LIB，如下所示：

>=library-loaded,id="C:\\Windows\\system32\\ntdll.dll",target-name="C:\\Windows\\system32\\ntdll.dll",host-name="C:\\Windows\\system32\\ntdll.dll",symbols-loaded="0",thread-group="i1"
sLibrary C:\Windows\system32\ntdll.dll loaded
>=library-loaded,id="C:\\Windows\\syswow64\\kernel32.dll",target-name="C:\\Windows\\syswow64\\kernel32.dll",host-name="C:\\Windows\\syswow64\\kernel32.dll",symbols-loaded="0",thread-group="i1"
sLibrary C:\Windows\syswow64\kernel32.dll loaded
>=library-loaded,id="C:\\Windows\\syswow64\\KernelBase.dll",target-name="C:\\Windows\\syswow64\\KernelBase.dll",host-name="C:\\Windows\\syswow64\\KernelBase.dll",symbols-loaded="0",thread-group="i1"
sLibrary C:\Windows\syswow64\KernelBase.dll loaded
>=library-loaded,id="C:\\Users\\juriy\\testlib\\debug\\testlib.dll",target-name="C:\\Users\\juriy\\testlib\\debug\\testlib.dll",host-name="C:\\Users\\juriy\\testlib\\debug\\testlib.dll",symbols-loaded="0",thread-group="i1"
sLibrary C:\Users\juriy\testlib\debug\testlib.dll loaded

但当更复杂的一个启动时，gdb会忽略加载并输出以下内容：

>=thread-exited,id="1",group-id="i1"
sThread 1 in group i1 exited
>=thread-group-exited,id="i1"
sThread group i1 exited
>19^error,msg="During startup program exited with code 0xc0000022."
dCOOKIE FOR TOKEN 19 ALREADY EATEN (InferiorRunOk). TWO RESPONSES FOR ONE COMMAND?
dNOTE: INFERIOR EXITED
dState changed from InferiorRunOk(11) to InferiorExitOk(16) [master]
dState changed from InferiorExitOk(16) to InferiorShutdownOk(19) [master]
dState changed from InferiorShutdownOk(19) to EngineShutdownRequested(20) [master]
dQUEUE: SHUTDOWN ENGINE
sExecutable failed: During startup program exited with code 0xc0000022.

还有一些关于交叉编译的警告，我应该忽略吗？

---

一些相同的问题，但它有点无用，因为我看不出决定

检查事件日志（eventvwr.msc），特别是应用程序日志中是否有任何错误。eventvwr.msc

0xc000022

是

状态\u访问被拒绝

。您可能希望尝试从SysInternals运行类似Process Monitor的程序，以查看是否有API调用可能是问题的原因，并提供问题根源的线索。@MichaelBurr，谢谢您的时间

>=thread-exited,id="1",group-id="i1"
sThread 1 in group i1 exited
>=thread-group-exited,id="i1"
sThread group i1 exited
>19^error,msg="During startup program exited with code 0xc0000022."
dCOOKIE FOR TOKEN 19 ALREADY EATEN (InferiorRunOk). TWO RESPONSES FOR ONE COMMAND?
dNOTE: INFERIOR EXITED
dState changed from InferiorRunOk(11) to InferiorExitOk(16) [master]
dState changed from InferiorExitOk(16) to InferiorShutdownOk(19) [master]
dState changed from InferiorShutdownOk(19) to EngineShutdownRequested(20) [master]
dQUEUE: SHUTDOWN ENGINE
sExecutable failed: During startup program exited with code 0xc0000022.