# gcc -O3 (and higher) can cause code produced from Storable.xs that

# dumps core immediately in recurse.t and retrieve.t, in is_storing()

# and last_op_in_netorder(), respectively.  In both cases the cxt is

# full of junk (and according to valgrind the cxt was never stack'd,

# malloc'd or free'd).  Observed in Debian 3.0 x86, with gccs 2.95.4

# 20011002 and 3.3, and in Redhat 7.1 with gcc 3.3.1. The failures

# happen only for unthreaded builds, threaded builds work okay.

use Config;

if ($Config{gccversion} and !$Config{usethreads}) {

    my $optimize = $Config{optimize};

    # works fine with gcc 4 or clang

    if ($optimize =~ s/(^| )-O[3-9]( |$)/$1-O2$2/ and $Config{gccversion} =~ /^[23]\./) {

	$self->{OPTIMIZE} = $optimize;

    }

}