OpenEuphoria

2. RE: blows up

• Posted by Matt Lewis <matthewwalkerlewis at yahoo.com> Aug 08, 2003
• 378 views

> From: George Walters [mailto:gwalters at sc.rr.com]
>
> Don't know anything in particular. I was using Medit to debug a report
> program and trying to get the "cr" to execute the default 
> button to launch
> it...

You're clearly using Euphoria 2.3 (since 2.4 traps machine level
exceptions).  What you can do to get a real error report, is put the
following code into MEditor (it's in a file called exceptions.ew on my
system--I'm just now upgrading to 2.4).  Then Pete can at least have an idea
of where MEditor is crashing.

-- exceptions

include dll.e
constant 
k32 = open_dll("kernel32.dll"),
xSetUnhandledExceptionFilter = define_c_func( k32,
"SetUnhandledExceptionFilter",
    {C_POINTER}, C_POINTER )
without trace
include get.e
global atom the_ptr, traceback
traceback = 1
the_ptr = 0

constant
EXCEPTION_EXECUTE_HANDLER = 1,
EXCEPTION_CONTINUE_EXECUTION = 0,
EXCEPTION_CONTINUE_SEARCH = -1

function exception( atom ex )
    atom record, context, params

    record = peek4u( ex )
    puts(1,"Exception:\n")
    while record do
 
printf(1,"Code:\t%08x\nFlags:\t%08x\nnext:\t%08x\nAddr:\t%08x\nParams:\t%d\n
",
            peek4u({record,6}))
        params = peek4u(record+16)
        for i = 1 to params do
            printf(1,"param[%d]:\t%08x\n", {i,peek4u( record + 16 + i*4 )})
        end for
        record = peek4u(record+8)
    end while

    context = peek4u( ex + 4 )
    ? peek({context,10})

    puts(1,"Press any key to continue\n")
    if wait_key() then end if
if traceback then ? 1/0 end if
    return EXCEPTION_EXECUTE_HANDLER
end function


if c_func( xSetUnhandledExceptionFilter,
{call_back(routine_id("exception"))}) then end if

--typedef struct _EXCEPTION_POINTERS {  
--PEXCEPTION_RECORD ExceptionRecord;  
--PCONTEXT ContextRecord;

--typedef struct _EXCEPTION_RECORD {  
--DWORD ExceptionCode;  
--DWORD ExceptionFlags;  
--struct _EXCEPTION_RECORD* ExceptionRecord;  
--PVOID ExceptionAddress;  
--DWORD NumberParameters;  
--ULONG_PTR ExceptionInformation[EXCEPTION_MAXIMUM_PARAMETERS];