|
1702
|
1 *debug.txt* For Vim version 7.2. Last change: 2006 May 01
|
|
502
|
2
|
|
|
3
|
|
|
4 VIM REFERENCE MANUAL by Bram Moolenaar
|
|
|
5
|
|
|
6
|
|
|
7 Debugging Vim *debug-vim*
|
|
|
8
|
|
|
9 This is for debugging Vim itself, when it doesn't work properly.
|
|
606
|
10 For debugging Vim scripts, functions, etc. see |debug-scripts|
|
|
502
|
11
|
|
|
12 1. Location of a crash, using gcc and gdb |debug-gcc|
|
|
856
|
13 2. Windows Bug Reporting |debug-win32|
|
|
502
|
14
|
|
|
15 ==============================================================================
|
|
|
16
|
|
|
17 1. Location of a crash, using gcc and gdb *debug-gcc*
|
|
|
18
|
|
|
19 When Vim crashes in one of the test files, and you are using gcc for
|
|
|
20 compilation, here is what you can do to find out exactly where Vim crashes.
|
|
|
21 This also applies when using the MingW tools.
|
|
|
22
|
|
|
23 1. Compile Vim with the "-g" option (there is a line in the Makefile for this,
|
|
|
24 which you can uncomment).
|
|
|
25
|
|
|
26 2. Execute these commands (replace "11" with the test that fails): >
|
|
|
27 cd testdir
|
|
|
28 gdb ../vim
|
|
|
29 run -u unix.vim -U NONE -s dotest.in test11.in
|
|
|
30
|
|
|
31 3. Check where Vim crashes, gdb should give a message for this.
|
|
|
32
|
|
|
33 4. Get a stack trace from gdb with this command: >
|
|
|
34 where
|
|
|
35 < You can check out different places in the stack trace with: >
|
|
|
36 frame 3
|
|
|
37 < Replace "3" with one of the numbers in the stack trace.
|
|
|
38
|
|
|
39 ==============================================================================
|
|
|
40
|
|
856
|
41 2. Windows Bug Reporting *debug-win32*
|
|
502
|
42
|
|
842
|
43 If the Windows version of Vim crashes in a reproducible manner, you can take
|
|
|
44 some steps to provide a useful bug report.
|
|
|
45
|
|
502
|
46
|
|
842
|
47 GENERIC ~
|
|
|
48
|
|
|
49 You must obtain the debugger symbols (PDB) file for your executable: gvim.pdb
|
|
857
|
50 for gvim.exe, or vim.pdb for vim.exe. The PDB should be available from the
|
|
|
51 same place that you obtained the executable. Be sure to use the PDB that
|
|
|
52 matches the EXE (same date).
|
|
502
|
53
|
|
|
54 If you built the executable yourself with the Microsoft Visual C++ compiler,
|
|
|
55 then the PDB was built with the EXE.
|
|
|
56
|
|
842
|
57 Alternatively, if you have the source files, you can import Make_ivc.mak into
|
|
|
58 Visual Studio as a workspace. Then select a debug configuration, build and
|
|
|
59 you can do all kinds of debugging (set breakpoints, watch variables, etc.).
|
|
|
60
|
|
|
61 If you have Visual Studio, use that instead of the VC Toolkit and WinDbg.
|
|
|
62
|
|
|
63 For other compilers, you should always use the corresponding debugger: TD for
|
|
|
64 a Vim executable compiled with the Borland compiler; gdb (see above
|
|
|
65 |debug-gcc|) for the Cygwin and MinGW compilers.
|
|
|
66
|
|
|
67
|
|
857
|
68 *debug-vs2005*
|
|
|
69 2.2 Debugging Vim crashes with Visual Studio 2005/Visual C++ 2005 Express ~
|
|
842
|
70
|
|
|
71 First launch vim.exe or gvim.exe and then launch Visual Studio. (If you don't
|
|
857
|
72 have Visual Studio, follow the instructions at |get-ms-debuggers| to obtain a
|
|
842
|
73 free copy of Visual C++ 2005 Express Edition.)
|
|
|
74
|
|
|
75 On the Tools menu, click Attach to Process. Choose the Vim process.
|
|
|
76
|
|
|
77 In Vim, reproduce the crash. A dialog will appear in Visual Studio, telling
|
|
|
78 you about the unhandled exception in the Vim process. Click Break to break
|
|
|
79 into the process.
|
|
|
80
|
|
|
81 Visual Studio will pop up another dialog, telling you that no symbols are
|
|
|
82 loaded and that the source code cannot be displayed. Click OK.
|
|
|
83
|
|
|
84 Several windows will open. Right-click in the Call Stack window. Choose Load
|
|
|
85 Symbols. The Find Symbols dialog will open, looking for (g)vim.pdb. Navigate
|
|
|
86 to the directory where you have the PDB file and click Open.
|
|
|
87
|
|
|
88 At this point, you should have a full call stack with vim function names and
|
|
|
89 line numbers. Double-click one of the lines and the Find Source dialog will
|
|
|
90 appear. Navigate to the directory where the Vim source is (if you have it.)
|
|
|
91
|
|
|
92 If you don't know how to debug this any further, follow the instructions
|
|
|
93 at ":help bug-reports". Paste the call stack into the bug report.
|
|
|
94
|
|
|
95 If you have a non-free version of Visual Studio, you can save a minidump via
|
|
|
96 the Debug menu and send it with the bug report. A minidump is a small file
|
|
|
97 (<100KB), which contains information about the state of your process.
|
|
857
|
98 Visual C++ 2005 Express Edition cannot save minidumps and it cannot be
|
|
|
99 installed as a just-in-time debugger. Use WinDbg, |debug-windbg|, if you
|
|
|
100 need to save minidumps or you want a just-in-time (postmortem) debugger.
|
|
842
|
101
|
|
857
|
102 *debug-windbg*
|
|
|
103 2.3 Debugging Vim crashes with WinDbg ~
|
|
|
104
|
|
|
105 See |get-ms-debuggers| to obtain a copy of WinDbg.
|
|
842
|
106
|
|
857
|
107 As with the Visual Studio IDE, you can attach WinDbg to a running Vim process.
|
|
|
108 You can also have your system automatically invoke WinDbg as a postmortem
|
|
|
109 debugger. To set WinDbg as your postmortem debugger, run "windbg -I".
|
|
|
110
|
|
|
111 To attach WinDbg to a running Vim process, launch WinDbg. On the File menu,
|
|
|
112 choose Attach to a Process. Select the Vim process and click OK.
|
|
|
113
|
|
|
114 At this point, choose Symbol File Path on the File menu, and add the folder
|
|
|
115 containing your Vim PDB to the sympath. If you have Vim source available,
|
|
|
116 use Source File Path on the File menu. You can now open source files in WinDbg
|
|
|
117 and set breakpoints, if you like. Reproduce your crash. WinDbg should open the
|
|
|
118 source file at the point of the crash. Using the View menu, you can examine
|
|
|
119 the call stack, local variables, watch windows, and so on.
|
|
842
|
120
|
|
857
|
121 If WinDbg is your postmortem debugger, you do not need to attach WinDbg to
|
|
|
122 your Vim process. Simply reproduce the crash and WinDbg will launch
|
|
|
123 automatically. As above, set the Symbol File Path and the Source File Path.
|
|
|
124
|
|
|
125 To save a minidump, type the following at the WinDbg command line: >
|
|
|
126 .dump vim.dmp
|
|
|
127 <
|
|
|
128 *debug-minidump*
|
|
|
129 2.4 Opening a Minidump ~
|
|
|
130
|
|
|
131 If you have a minidump file, you can open it in Visual Studio or in WinDbg.
|
|
502
|
132
|
|
857
|
133 In Visual Studio 2005: on the File menu, choose Open, then Project/Solution.
|
|
|
134 Navigate to the .dmp file and open it. Now press F5 to invoke the debugger.
|
|
|
135 Follow the instructions in |debug-vs2005| to set the Symbol File Path.
|
|
|
136
|
|
|
137 In WinDbg: choose Open Crash Dump on the File menu. Follow the instructions in
|
|
|
138 |debug-windbg| to set the Symbol File Path.
|
|
|
139
|
|
|
140 *get-ms-debuggers*
|
|
|
141 2.5 Obtaining Microsoft Debugging Tools ~
|
|
|
142
|
|
|
143 The Debugging Tools for Windows (including WinDbg) can be downloaded from
|
|
502
|
144 http://www.microsoft.com/whdc/devtools/debugging/default.mspx
|
|
|
145 This includes the WinDbg debugger.
|
|
|
146
|
|
857
|
147 Visual C++ 2005 Express Edition can be downloaded for free from:
|
|
|
148 http://msdn.microsoft.com/vstudio/express/visualC/default.aspx
|
|
502
|
149
|
|
|
150 =========================================================================
|
|
|
151 vim:tw=78:ts=8:ft=help:norl:
|
