Using low-level functions when exploiting
the C library
If you are using the libraries in an application that does
not have a main() function, you must re-implement
some functions in the library.
Caution
__rt_raise() is essential if you are
using the heap.
Note
If rand() is called, srand()must be
called first. This is done automatically during library initialization
but not when you avoid the library initialization.
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