[M3devel] I don't know what changed, or when, but thanks!

[Hendrik Boom]

On Mon, Jul 08, 2013 at 10:36:29AM -0500, Rodney M. Bates wrote:
> If you get m3gdb to realize this is modula-3 code, there will be a lot
> more useful info in the backtrace, like parameter values.  Probably just
> doing a 'frame 17', or any M3 frame will do it, or 'set lang Modula-3'.

Yes, that would probably help.
> 
> If you are using the head compiler and debugger, you will need very
> recent ones (perhaps in the last month?), as changes in the code
> generator created some regressions.  All that I have seen are now
> fixed in the current head.

Time to upgrade, then.

Please understand, I was being genuinely happy, not complaining in a 
sarcastic way.

Knowing just where I called into deep space was a huge time-saver.

-- hendrik

> 
> On 07/08/2013 08:45 AM, Hendrik Boom wrote:
> >Years ago, when a Modula 3 program failed because I called an absent
> >method, it was difficult findig where the error was.
> >
> >But yesterday, I just ran the program in m3gdb and got a backtrace
> >after failure.
> >
> >Of course the backtrace was full of apparent gibberish, but right in
> >the middle is said:
> >
> >     at ../src/runtime/common/RTException.m3:25
> >#14 0xb6e3631c in Raise (act=Invalid C/C++ type code 30 in symbol
> >table.
> >) at ../src/runtime/ex_frame/RTExFrame.m3:29
> >#15 0xb6e30d1d in Fail (rte=Invalid C/C++ type code 23 in symbol table.
> >) at ../src/runtime/common/RTType.m3:850
> >#16 0xb6e30c4e in UndefinedMethod (self=Invalid C/C++ type code 46 in
> >symbol table.
> >)
> >     at ../src/runtime/common/RTType.m3:834
> >#17 0x08063d45 in shift (new=Invalid C/C++ type code 26 in symbol
> >table.
> >) at ../src/Parse.m3:115
> >---Type <return> to continue, or q <return> to quit---
> >#18 0x08062fc4 in parse (input=Invalid C/C++ type code 26 in symbol
> >table.
> >) at ../src/Parse.m3:354
> >#19 0x08065be3 in Main (mode=Invalid C/C++ type code 39 in symbol
> >table.
> >) at ../src/Main.m3:202
> >
> >
> >So it was quite clear I had to look at ../src/Parse.m3:115, and it was
> >obvious where I had left our a shift := shift line in an OVERRIDES
> >list.
> >
> >-- hendrik
> >
> >
>