Hi to all!

I've added following code chunk to my application:
Qt Code: 
  1. // group names fetching
  2.     QSqlQuery query;    // database query
  3.     query.setForwardOnly(true);    // sets forward seeking only
  4.     query.exec("SELECT * FROM `eros`.`grupa`;");
  5.     while(query.next())
  6.     {
  7.         qDebug() << query.value(iGroupFieldNAME);    // debug
  8.         // extract names from database
  9.         m_MerchandizeGroupsNames.append(query.value(iGroupFieldNAME).toString());
  10.     }
  11.  
  12.     m_pMerchandizeSelectorButtonsLayout=new QHBoxLayout();    // creates new horiz. layout
  13.     Q_CHECK_PTR(m_pMerchandizeSelectorButtonsLayout);    // checks creation
  14.     quint16 iIndex;    // loop index
  15.     for(iIndex=0; iIndex<m_MerchandizeGroupsNames.size(); iIndex++);
  16.     //for(iIndex=0; iIndex<m_MerchandizeGroupsNames.size(); ++iIndex);
  17.     {
  18.         // creates new button
  19.         //QString buttonText=m_MerchandizeGroupsNames.at(iIndex);    // gets button text
  20.         QPushButton* pTempButton=new QPushButton(m_MerchandizeGroupsNames.at(iIndex), this);
  21.         Q_CHECK_PTR(pTempButton);
  22.         // adds button to list
  23.         m_MerchandizeSelectorButtons.append(pTempButton);
  24.         m_cPalette=m_MerchandizeSelectorButtons.at(iIndex)->palette();    // gets current pallete of button
  25.         m_cPalette.setColor(QPalette::Button, Qt::black);    // sets up new palette componenet
  26.         m_cPalette.setColor(QPalette::ButtonText, Qt::white);    // sets up new palette componenet
  27.         m_MerchandizeSelectorButtons.at(iIndex)->setPalette(m_cPalette);    // sets new pallete
  28.         // adds newly created button to layout
  29.         m_pMerchandizeSelectorButtonsLayout->addWidget(m_MerchandizeSelectorButtons.at(iIndex));
  30.         delete pTempButton;    // deletes temp button
  31.     }
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and the application stopped working. I went in debug mode with Eclipse and I caught following messages:
Qt Code: 
  1. 261-gdb-set confirm off
  2. 261^done
  3. 262-gdb-set width 0
  4. (gdb) 
  5. 262^done
  6. 263-gdb-set height 0
  7. (gdb) 
  8. 263^done
  9. 264-interpreter-exec console echo
  10. (gdb) 
  11. 264^done
  12. 265-gdb-show prompt
  13. (gdb) 
  14. 265^done,value="(gdb) "
  15. 266
  16. (gdb) 
  17. &"\n"
  18. 266^done
  19. 267-gdb-set stop-on-solib-events 0
  20. (gdb) 
  21.  
  22. 267^done
  23. 268-gdb-set new-console off
  24. (gdb) 
  25. 268^done
  26. (gdb) 
  27. 269-environment-cd "C:\\Documents and Settings\\markofr\\workspace\\eROSystem"
  28. 269^done
  29. 270-gdb-set environment PROMPT $P$G
  30. (gdb) 
  31. 270^done
  32. 271-gdb-set environment SESSIONNAME Console
  33. (gdb) 
  34. 271^done
  35. 272-gdb-set environment ComSpec C:\WINDOWS\system32\cmd.exe
  36. (gdb) 
  37. 272^done
  38. (gdb) 
  39. 273-gdb-set environment OS Windows_NT
  40. 273^done
  41. (gdb) 
  42. 274-gdb-set environment ALLUSERSPROFILE C:\Documents and Settings\All Users
  43. 274^done
  44. (gdb) 
  45. 275-gdb-set environment HOMEPATH \Documents and Settings\markofr
  46. 275^done
  47. (gdb) 
  48. 276-gdb-set environment APPDATA C:\Documents and Settings\markofr\Application Data
  49. 276^done
  50. (gdb) 
  51. 277-gdb-set environment TEMP C:\DOCUME~1\markofr\LOCALS~1\Temp
  52. 277^done
  53. (gdb) 
  54. 278-gdb-set environment PROCESSOR_ARCHITECTURE x86
  55. 278^done
  56. (gdb) 
  57. 279-gdb-set environment QTDIR C:\Qt\4.3.2
  58. 279^done
  59. (gdb) 
  60. 280-gdb-set environment USERNAME markofr
  61. 280^done
  62. (gdb) 
  63. 281-gdb-set environment SystemDrive C:
  64. 281^done
  65. (gdb) 
  66. 282-gdb-set environment PROCESSOR_REVISION 4802
  67. 282^done
  68. (gdb) 
  69. 283-gdb-set environment COMPUTERNAME ABAKUS
  70. 283^done
  71. (gdb) 
  72. 284-gdb-set environment PROCESSOR_IDENTIFIER x86 Family 15 Model 72 Stepping 2, AuthenticAMD
  73. 284^done
  74. (gdb) 
  75. 285-gdb-set environment USERDOMAIN ABAKUS
  76. 285^done
  77. (gdb) 
  78. 286-gdb-set environment USERPROFILE C:\Documents and Settings\markofr
  79. 286^done
  80. (gdb) 
  81. 287-gdb-set environment windir C:\WINDOWS
  82. 287^done
  83. (gdb) 
  84. 288-gdb-set environment CommonProgramFiles C:\Program Files\Common Files
  85. 288^done
  86. (gdb) 
  87. 289-gdb-set environment LOGONSERVER \\ABAKUS
  88. 289^done
  89. (gdb) 
  90. 290-gdb-set environment QTJAVA "C:\Program Files\Java\jre1.6.0_03\lib\ext\QTJava.zip"
  91. 290^done
  92. (gdb) 
  93. 291-gdb-set environment PATHEXT .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH
  94. 291^done
  95. (gdb) 
  96. 292-gdb-set environment CLIENTNAME Console
  97. 292^done
  98. (gdb) 
  99. 293-gdb-set environment SystemRoot C:\WINDOWS
  100. 293^done
  101. (gdb) 
  102. 294-gdb-set environment CLASSPATH "C:\Program Files\Java\jre1.6.0_03\lib\ext\QTJava.zip"
  103. 294^done
  104. (gdb) 
  105. 295-gdb-set environment ProgramFiles C:\Program Files
  106. 295^done
  107. (gdb) 
  108. 296-gdb-set environment HOMEDRIVE C:
  109. 296^done
  110. (gdb) 
  111. 298-gdb-set environment PROCESSOR_LEVEL 15
  112. 298^done
  113. (gdb) 
  114. 299-gdb-set environment NUMBER_OF_PROCESSORS 2
  115. 299^done
  116. (gdb) 
  117. 300-gdb-set environment FP_NO_HOST_CHECK NO
  118. 300^done
  119. (gdb) 
  120. 301-gdb-set environment TMP C:\DOCUME~1\markofr\LOCALS~1\Temp
  121. 301^done
  122. (gdb) 
  123. 302-gdb-set environment QMAKESPEC win32-g++
  124. 302^done
  125. 304 info threads
  126. &"info threads\n"
  127. &"No registers.\n"
  128. 304^error,msg="No registers."
  129. (gdb) 
  130. 305-data-list-register-names
  131. 305^done,register-names=["eax","ecx","edx","ebx","esp","ebp","esi","edi","eip","eflags","cs","ss","ds","es","fs","gs","st0","st1","st2","st3","st4","st5","st6","st7","fctrl","fstat","ftag","fiseg","fioff","foseg","fooff","fop","xmm0","xmm1","xmm2","xmm3","xmm4","xmm5","xmm6","xmm7","mxcsr","mm0","mm1","mm2","mm3","mm4","mm5","mm6","mm7"]
  132. 306-break-insert COperationWIndow.cpp:118
  133. (gdb) 
  134. 306^done,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x00402ec4",func="COperationWIndow::COperationWIndow(QWidget*)",file="COperationWIndow.cpp",fullname="C:/Documents and Settings/markofr/workspace/eROSystem/COperationWIndow.cpp",line="118",times="0"}
  135. (gdb) 
  136. 307-break-insert -t main
  137. 307^done,bkpt={number="2",type="breakpoint",disp="del",enabled="y",addr="0x0040d6a9",at="<main+9>",times="0"}
  138. (gdb) 
  139. 308-exec-run
  140. 308^running
  141. (gdb) 
  142. ~"Current language:  auto; currently c++\n"
  143. Current language:  auto; currently c++
  144. 308*stopped,thread-id="1",frame={addr="0x0040d6a9",func="main",args=[]}
  145. (gdb) 
  146. 309 info proc
  147. &"info proc\n"
  148. &"Undefined info command: \"proc\".  Try \"help info\".\n"
  149. 309^error,msg="Undefined info command: \"proc\".  Try \"help info\"."
  150. (gdb) 
  151. 310 info program
  152. &"info program\n"
  153. ~"\tUsing the running image of child thread 1728.0x284.\n"
  154. ~"Program stopped at 0x40d6a9.\n"
  155. ~"It stopped at a breakpoint that has since been deleted.\n"
  156. ~"Type \"info stack\" or \"info registers\" for more information.\n"
  157. 310^done
  158. (gdb) 
  159. 311 info threads
  160. &"info threads\n"
  161. ~"* 1 thread 1728.0x284  0x0040d6a9 in main ()\n"
  162. 311^done
  163. (gdb) 
  164. 312-stack-info-depth
  165. 312^done,depth="1"
  166. (gdb) 
  167. 313-stack-list-frames 0 1
  168. 313^done,stack=[frame={level="0",addr="0x0040d6a9",func="main"}]
  169. (gdb) 
  170. 314-data-list-changed-registers
  171. 314^done,changed-registers=["0","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31","32","33","34","35","36","37","38","39","40"]
  172. (gdb) 
  173. 316-exec-continue
  174. 316^running
  175. (gdb) 
  176. warning: Lowest section in C:\WINDOWS\system32\xpsp2res.dll is .rsrc at 20001000
  177. &"warning: Lowest section in C:\\WINDOWS\\system32\\xpsp2res.dll is .rsrc at 20001000\n"
  178. &"warning: QVariant(QString, \"Glavne Jedi\") \n"
  179. &"\n"
  180. &"warning: QVariant(QString, \"Pijaee\") \n"
  181. warning: QVariant(QString, "Glavne Jedi") 
  182.  
  183. warning: QVariant(QString, "Pijaee") 
  184.  
  185. warning: QVariant(QString, "Sladice") 
  186.  
  187. warning: QVariant(QString, "Solate") 
  188.  
  189. warning: QVariant(QString, "Topli napitki") 
  190.  
  191. warning: QVariant(QString, "Priloge in dodatki") 
  192.  
  193. warning: ASSERT failure in QList<T>::at: "index out of range", file ../../../../Qt/4.3.2/include/QtCore/../../src/corelib/tools/qlist.h, line 386
  194.  
  195. &"\n"
  196. &"warning: QVariant(QString, \"Sladice\") \n"
  197. &"\n"
  198. &"warning: QVariant(QString, \"Solate\") \n"
  199. &"\n"
  200. &"warning: QVariant(QString, \"Topli napitki\") \n"
  201. &"\n"
  202. &"warning: QVariant(QString, \"Priloge in dodatki\") \n"
  203. &"\n"
  204. &"warning: ASSERT failure in QList<T>::at: \"index out of range\", file ../../../../Qt/4.3.2/include/QtCore/../../src/corelib/tools/qlist.h, line 386\n"
  205. &"\n"
  206. 316*stopped,reason="exited",exit-code="01"
  207. (gdb) 
  208. 317-data-evaluate-expression $_exitcode
  209. 317^done,value="1"
  210. (gdb) 
  211. 318-gdb-exit
  212. 318^exit
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From this gdb output I found out qsqlquery is working ok, because I see database table contens as a result of qDebug(). That means database connection holds and everything is ok. But what I cannot figure out, why the hell I get out of QList index somwhere in this code chunk. Can someone please help me? And I was forced to strip some text from gdb output otherwise thread is too long to post.