GAP fails to enter break loop

[hulpke]

[in GAP 4.10dev-1462-g06ba3fe of today]

The following function

Fail:=function()
local a,v;
  a:=[1.2,3];
  v:=2;
  v:=a{v};
end;

produces (as expected) an error

Error, List Elements: <positions> must be a dense list of positive integers in
  v := a{v}; at ...

but then does not enter the break loop, but bail out to the main gap> loop.

[markuspf]

This is probably related (or a duplicate of) #2920

[fingolfin]

Note quite, this is a regression; there is a break loop in older GAP loops.

[fingolfin]

It works in GAP up to 4.9, but is broken in GAP 4.10. Probably my fault, I'll submit a fix ASAP.

[hulpke]

@markuspf Yes, thank you. I'll leave this open as it isn't directly interpreted code but in a function where there certainly should be a break loop.

[fingolfin]

Actually, @markuspf is right and this is more or less #2920, sorry about the confusion. Anyway, my PR fixes both.