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Problems with using identifier long long int in gcc++


l1: unsigned long long a; 
l2: cout << sizeof(a) << endl; 
l3: a = 1281474976710655; 
l4: cout << a << endl;
When we trying to compile such code with gcc++, it's throw error that
the  constant '1281474976710655' is too large for long long, it is only
2**48-1, when max number for unsigned long long is 2**64. This code
compiles normal when we use Microsoft  compiler.
gcc (GCC) 4.1.2 20070925 (Red Hat 4.1.2-33)


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