In C, resizing an array invalidates existing pointers to the array.

int* a;
a = (int*)malloc(...);
int* b = a;
a = (int*)realloc(a, ...);
/* b now contains garbage */
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The OP was asking if the same happens in Perl.

my @array;
my $aref = \@array;
push @array, ...;
# Is $aref still valid? Yes.
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In C, resizing an array invalidates existing pointers to the array.

Now that you put it that way, I understand what was being asked.

While I can't cite which source code in core Perl it is I know I've seen how it is handled and I definitely agree with your assesment.

Writing sample code such as you've provided solidifies it.

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Peter L. Berghold -- Unix Professional
Peter -at- Berghold -dot- Net; AOL IM redcowdawg Yahoo IM: blue_cowdawg