I've just successfully compiled C::B CVS (VERSION_1_0 branch) on FreeBSD 5.4 (wxWidgets 2.6.0 Unicode), and right now I'm trying to debug a segmentation fault I'm getting on startup. I could use some help. Here's an excerpt from my debugging session:
elvis@square$ LD_LIBRARY_PATH=. gdb codeblocks.exe
GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "i386-marcel-freebsd"...
(gdb) run
Starting program: /usr/home/elvis/Desktop/Download/cb/devel/codeblocks.exe
(codeblocks.exe:14250): Gtk-CRITICAL **: gtk_pixmap_new: assertion `val != NULL' failed
(codeblocks.exe:14250): Gtk-CRITICAL **: gtk_box_pack_start: assertion `GTK_IS_WIDGET (child)' failed
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1 (LWP 100178)]
0x28e1260a in gtk_widget_show () from /usr/X11R6/lib/libgtk-x11-2.0.so.600
(gdb) bt
#0 0x28e1260a in gtk_widget_show () from /usr/X11R6/lib/libgtk-x11-2.0.so.600
#1 0x284e122e in wxNotebook::SetPageImage () from /usr/X11R6/lib/libwx_gtk2u_core-2.6.so.0
#2 0x2886f216 in MessageManager::DoAddLog (this=0x82b8a00, type=mltLog, log=0x8317400) at sdk/messagemanager.cpp:213
#3 0x2886e296 in MessageManager (this=0x82b8a00, parent=0x813c000) at sdk/messagemanager.cpp:90
#4 0x2886d4b8 in MessageManager::Get (parent=0x813c000) at sdk/messagemanager.cpp:47
#5 0x2886c669 in Manager::GetMessageManager (this=0x82bb8d0) at sdk/manager.cpp:233
#6 0x2886bd5b in Manager::Get (appWindow=0x813c000, notebook=0x82a6400) at sdk/manager.cpp:54
#7 0x08062cad in MainFrame::CreateIDE (this=0x813c000) at src/main.cpp:449
#8 0x08061baf in MainFrame (this=0x813c000, parent=0x0) at src/main.cpp:366
#9 0x0805a047 in CodeBlocksApp::InitFrame (this=0x80c8180) at src/app.cpp:176
#10 0x0805a4c1 in CodeBlocksApp::OnInit (this=0x80c8180) at src/app.cpp:249
#11 0x0805cae0 in wxAppConsole::CallOnInit (this=0x80c8180) at app.h:87
#12 0x286dd67a in wxEntry () from /usr/X11R6/lib/libwx_baseu-2.6.so.0
#13 0x286dd756 in wxEntry () from /usr/X11R6/lib/libwx_baseu-2.6.so.0
#14 0x08059733 in main (argc=1, argv=0xbfbfeac0) at src/app.cpp:297
.. okay, so something is wrong with the wxNotebook::SetPageImage() call, lets see..
(gdb) c
Continuing.
Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb) b sdk/messagemanager.cpp:213
No source file named sdk/messagemanager.cpp.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (sdk/messagemanager.cpp:213) pending.
(gdb) run
Starting program: /usr/home/elvis/Desktop/Download/cb/devel/codeblocks.exe
Breakpoint 2 at 0x2886f1f0: file sdk/messagemanager.cpp, line 213.
Pending breakpoint "sdk/messagemanager.cpp:213" resolved
[Switching to Thread 1 (LWP 100116)]
Breakpoint 2, MessageManager::DoAddLog (this=0x82b8a00, type=mltLog, log=0x8317400) at sdk/messagemanager.cpp:213
213 SetPageImage(log->GetPageIndex(), 0); // set default page image
(gdb) p log->GetPageIndex()
$1 = 0
(gdb)
..so this shows that SetPageImage() would be called with 0 and 0 as arguments. That's not a problem, right? The weird thing is that if I put a breakpoint at line 86, which is where the MessageManager gets its wxImageList assigned, it is never reached (even though this is in the constructor!):
(gdb) c
Continuing.
(codeblocks.exe:14256): Gtk-CRITICAL **: gtk_pixmap_new: assertion `val != NULL' failed
(codeblocks.exe:14256): Gtk-CRITICAL **: gtk_box_pack_start: assertion `GTK_IS_WIDGET (child)' failed
Program received signal SIGSEGV, Segmentation fault.
0x28e1260a in gtk_widget_show () from /usr/X11R6/lib/libgtk-x11-2.0.so.600
(gdb) l sdk/messagemanager.cpp:86
81 prefix = ConfigManager::Get()->Read(_T("data_path")) + _T("/images/");
82 bmp.LoadFile(prefix + _T("edit_16x16.png"), wxBITMAP_TYPE_PNG);
83 images->Add(bmp);
84 bmp.LoadFile(prefix + _T("contents_16x16.png"), wxBITMAP_TYPE_PNG);
85 images->Add(bmp);
86 AssignImageList(images);
87
88 m_Logs.clear();
89 m_LogIDs.clear();
90 DoAddLog(mltLog, new SimpleTextLog(this, _("Code::Blocks")));
(gdb) b sdk/messagemanager.cpp:86
Breakpoint 3 at 0x2886d941: file sdk/messagemanager.cpp, line 86.
(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /usr/home/elvis/Desktop/Download/cb/devel/codeblocks.exe
[Switching to Thread 1 (LWP 100172)]
Breakpoint 2, MessageManager::DoAddLog (this=0x82b8a00, type=mltLog, log=0x8317400) at sdk/messagemanager.cpp:213
213 SetPageImage(log->GetPageIndex(), 0); // set default page image
(gdb)
..How can this be? DoAddLog() is only ever called from MessageManager itself, which means it must have been instantiated. But line 86 is never reached before the segmentation fault occurs! What am I missing.
Thankful for any help, I really want to get C::B running on FreeBSD.
Aron Stansvik
