What does "internal error #20000524"?

[Zack Weinberg]

On Tue, Jan 22, 2002 at 06:02:06PM -0500, Craig Rodrigues wrote:
> 
> SDL_gui.cc:212: internal error #20000524
> SDL_gui.cc:212: Internal compiler error in add_substitution, at cp/mangle.c:364
> 
> What is the significance of the error #20000524?

Two things.  First, as Andrea Bocci guessed, it does indeed indicate
the date 2000-05-24; that is when that sanity check was added to the
compiler.

Second, we didn't used to have the second line helpfully pointing out

...in add_substitution, at cp/mangle.c:364

so it would give you something to grep for.  These days, you can just
go straight to line 364 of cp/mangle.c.

There is no list of all the sanity checks and what they mean; if you
are lucky, there is a comment explaining why this is a can't-happen
condition immediately above the call to abort().

zw