Thread overview
DMD sometimes generates faulty debug lines information
Mar 14, 2007
Jascha Wetzel
Mar 16, 2007
Simen
Mar 21, 2007
Jascha Wetzel
Mar 21, 2007
Jascha Wetzel
March 14, 2007
Everyone using Ddbg with larger than tiny test-programs has probably
experienced this.
What you'll notice is, that although you set a breakopint at some line x
(and the breakpoint is actually set at that line, not just skipping
non-instruction lines), the debugger will break at some other line y > x.
This and similar behaviour has been observed in larger programs (usually
with a lot of modules). I'm currently trying to narrow it down to a test
case, but without success, so far. I'll have to downsize my larger
project step by step...

Has anyone seen something like this in as-small-as-possible programs?
March 16, 2007
I don't know if its related, but in my current project ddbg stopped working with breakpoints altogether:

Command-line: C:\ddbg\ddbg_gdb.exe -nx -fullname  -quiet -args bin/Debug/TestTopline.exe Working dir : C:\Documents and Settings\simen\My Documents\Projects\TestTopline\
> set prompt >>>>>>cb_gdb:
Ddbg v0.0.4.3 alpha - D Debugger
Copyright (c) 2007 Jascha Wetzel
http://ddbg.mainia.de/
(gdb) >>>>>>cb_gdb:
> show version
>>>>>>cb_gdb:
> set confirm off
>>>>>>cb_gdb:
> set width 0
>>>>>>cb_gdb:
> set height 0
>>>>>>cb_gdb:
> set breakpoint pending on
>>>>>>cb_gdb:
> set print asm-demangle on
>>>>>>cb_gdb:
> set unwindonsignal on
>>>>>>cb_gdb:
> set debugevents on
>>>>>>cb_gdb:
> set new-console on
>>>>>>cb_gdb:
> set disassembly-flavor intel
>>>>>>cb_gdb:
> directory C:/DOCUME~1/simen/MYDOCU~1/Projects/TESTTO~1/
>>>>>>cb_gdb:
> directory C:/
>>>>>>cb_gdb:
> set args buss0708.txt
>>>>>>cb_gdb:
> break "C:/Documents and Settings/simen/My Documents/Projects/TestTopline/in2view.d:418"
Breakpoint 0 at 0x00000000
>>>>>>cb_gdb:
> run
Error: couldn't write breakpoint opcode at :0
>>>>>>cb_gdb:



Jascha Wetzel <[firstname]@mainia.de> Wrote:

> Everyone using Ddbg with larger than tiny test-programs has probably
> experienced this.
> What you'll notice is, that although you set a breakopint at some line x
> (and the breakpoint is actually set at that line, not just skipping
> non-instruction lines), the debugger will break at some other line y > x.
> This and similar behaviour has been observed in larger programs (usually
> with a lot of modules). I'm currently trying to narrow it down to a test
> case, but without success, so far. I'll have to downsize my larger
> project step by step...
> 
> Has anyone seen something like this in as-small-as-possible programs?

March 21, 2007
this is solved in Ddbg 0.0.5
I was wrong - DMD's codeview info for source lines is fine.

Jascha Wetzel wrote:
> Everyone using Ddbg with larger than tiny test-programs has probably
> experienced this.
> What you'll notice is, that although you set a breakopint at some line x
> (and the breakpoint is actually set at that line, not just skipping
> non-instruction lines), the debugger will break at some other line y > x.
> This and similar behaviour has been observed in larger programs (usually
> with a lot of modules). I'm currently trying to narrow it down to a test
> case, but without success, so far. I'll have to downsize my larger
> project step by step...
> 
> Has anyone seen something like this in as-small-as-possible programs?
March 21, 2007
this problem probably has the same cause.
could you try 0.0.5, and tell me if the problem persists?

Simen wrote:
> I don't know if its related, but in my current project ddbg stopped working with breakpoints altogether:
> 
> Command-line: C:\ddbg\ddbg_gdb.exe -nx -fullname  -quiet -args bin/Debug/TestTopline.exe Working dir : C:\Documents and Settings\simen\My Documents\Projects\TestTopline\
>> set prompt >>>>>>cb_gdb:
> Ddbg v0.0.4.3 alpha - D Debugger
> Copyright (c) 2007 Jascha Wetzel
> http://ddbg.mainia.de/
> (gdb) >>>>>>cb_gdb:
>> show version
>>>>>>> cb_gdb:
>> set confirm off
>>>>>>> cb_gdb:
>> set width 0
>>>>>>> cb_gdb:
>> set height 0
>>>>>>> cb_gdb:
>> set breakpoint pending on
>>>>>>> cb_gdb:
>> set print asm-demangle on
>>>>>>> cb_gdb:
>> set unwindonsignal on
>>>>>>> cb_gdb:
>> set debugevents on
>>>>>>> cb_gdb:
>> set new-console on
>>>>>>> cb_gdb:
>> set disassembly-flavor intel
>>>>>>> cb_gdb:
>> directory C:/DOCUME~1/simen/MYDOCU~1/Projects/TESTTO~1/
>>>>>>> cb_gdb:
>> directory C:/
>>>>>>> cb_gdb:
>> set args buss0708.txt
>>>>>>> cb_gdb:
>> break "C:/Documents and Settings/simen/My Documents/Projects/TestTopline/in2view.d:418"
> Breakpoint 0 at 0x00000000
>>>>>>> cb_gdb:
>> run
> Error: couldn't write breakpoint opcode at :0
>>>>>>> cb_gdb:
> 
> 
> 
> Jascha Wetzel <[firstname]@mainia.de> Wrote:
> 
>> Everyone using Ddbg with larger than tiny test-programs has probably
>> experienced this.
>> What you'll notice is, that although you set a breakopint at some line x
>> (and the breakpoint is actually set at that line, not just skipping
>> non-instruction lines), the debugger will break at some other line y > x.
>> This and similar behaviour has been observed in larger programs (usually
>> with a lot of modules). I'm currently trying to narrow it down to a test
>> case, but without success, so far. I'll have to downsize my larger
>> project step by step...
>>
>> Has anyone seen something like this in as-small-as-possible programs?
>