understanding the __libc_init_array

Question

I viewed the source code of __libc_init_array from http://newlib.sourcearchive.com/documentation/1.18.0/init_8c-source.html .
But I don\'t quite understand what this fun

Answer 1

These special symbols will end up being referenced by the PT_DYNAMIC section of the generated library. PT_DYNAMIC defines the various resources needed to make dynamic linking succeed (library dependencies, exported symbols, symbol hash table, init/fini arrays, etc.).

Thus, any functions in these lists will end up linked to the PT_DYNAMIC section and called at the appropriate time during the dynamic linking process. You may want to consult the sources for ldd for more information.