in reply to Re: array reference
in thread array reference

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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Re^3: array reference
by blue_cowdawg (Monsignor) on Aug 22, 2007 at 17:07 UTC
        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.

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