[Mono-list] Source lines in backtraces ....

[Jaroslaw Kowalski]

Hi!

How about using "System.Diagnostics.SymbolStore" to read PDBs on Windows? I
haven't tried it yet but it looks promising. It should be feasible to create
a symbol table converter for csc-generated assemblies to dwarf format so
that you can compile on Windows and debug on Linux for example.

I'm not aware if there's a PDB file for mscorlib.dll. Usually Microsoft
ships debug symbols for (almost) all of their operating system components,
so that you can trace down to a function-name level. Perhaps they'll decide
to ship mscorlib.pdb some time.

Jarek

----- Original Message -----
From: "Martin Baulig" <martin@gnome.org>
To: "Lawrence Pit" <loz@cable.a2000.nl>
Cc: <mono-list@ximian.com>
Sent: Wednesday, May 22, 2002 1:14 PM
Subject: Re: [Mono-list] Source lines in backtraces ....


> "Lawrence Pit" <loz@cable.a2000.nl> writes:
>
> > This is only supposed to work on Linux though? As in cygwin I get the
> > following:
>
> Hi Lawrence,
>
> > $ mcs -g T26.cs
> > error CS-0018: Cannot generate debugging information on this platform
> > Error: Compilation failed
>
> You cannot use this with mscorlib:
>
> a) due to lacking documentation, we do not know how microsofts symbol
>    writer works.
>
> b) we also do not know how to use a different symbol writer with mscorlib.
>
> So to make this work on Windows, you must run mcs in mono, so that it's
> using our corlib.
>
> > $ mono --debugdwarf ./T26.exe
>
> That should be --debug=dwarf, hmm.
>
> > Recreating T26.il from ./T26.exe.
> > Assembler messages:
> > Error: can't open T26-debug.s for reading
> > T26-debug.s: No such file or directory
>
> You can ignore this message, it's trying to open the mcs-generated symbol
file
> which does not exist.  I'll add a check for this.
>
> > (process:1928): ** WARNING **: Can't open symbol file: T26-debug.o
>
> Same here, it's trying to open the non-existant symbol file.
>
> > X
> > RESULT: 0
> > Message: debug-dwarf2.c:776:dwarf2_write_class(): System.Object - 0x1c -
> > 0x10000
> > 1
> > Message: debug-dwarf2.c:776:dwarf2_write_class(): System.IntPtr - 0x18 -
> > 0x2109
> > ./T26.exe-dwarf.s: Assembler messages:
> > ./T26.exe-dwarf.s:168: Error: unknown pseudo-op: `.previous'
> > ./T26.exe-dwarf.s:174: Error: unknown pseudo-op: `.2byte'
> > ./T26.exe-dwarf.s:209: Warning: rest of line ignored; first ignored
>
> Ok, that's a bug.  I'll fix it.
>
> --
> Martin Baulig
> martin@gnome.org
>
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