Error Subscript 1 range error impossible to solve (Alpha VMS 6.2)

[Stephane Boneff]

Volker,

It's exact :
DBG> EXA 10002C+8
CAL_BIL_COW\I: 0000000A

and
DBG> EXA 10002C+2C
CAL_BIL_COW\COWP: 00000004

[Volker Halle]

Stephane,

how about

DBG> EXA 10002C+30 ! should be AUTRE_COWP

In general one needs to either check the source code, if any subscript of any array could have exceeded the allocation size of the array. Or one needs to analyze the machine code (ideally the complete instruction stream from the .DMP file itself !) to find out, if there are any execution passes leading to L$5 with the correct values of the registers as seen in the dump. Until now, I have not found such a code path, but I'm checking against the machine code listing and not against the actual machine code inside the .DMP file !

Volker.

[Dennis Handly]

>Volker: Or one needs to analyze the machine code

If range checking was implemented without much concern for performance, you wouldn't need to look at the machine code. The error message should tell you the name of the variable, index, bounds, file and line number.
I believe the +check= option on HP-UX does this.