GLOBAL_NOTHROW.cpp

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// checking for ::nothrow
 
 
struct nothrow_t { };
 
extern const nothrow_t nothrow;
 
const nothrow_t *ptr = &nothrow;
 
 
int main (int argc, char *argv[])
{
    (void)&argv;
 
    // foil clever optimizers
    if (argc > 2)
        ptr = 0;
 
    // will fail at link-time if ::nothrow is not defined
    // in the compiler support library
    return !(0 != ptr);
}