How to prevent the Visual C++ linker from including every function whose address is taken? -


the question pretty simple. let's compile & link code:

static char const *foo() { static char const *baz = "0123456789abcdef"; return baz; } static char const *(*bar)() = foo; int main() { return 0; }

the visual c++ compiler or linker automatically seems mark string baz used, , includes it, though never used (despite fact foo's address taken).

is there way make compiler or linker avoid including code isn't used?

separating foo() , bar() different obj file (i.e., different cpp) start - not enough. turns out when linking executable linker pulls in every obj file built exe anyway.

the second part of solution extract cpp foo() , bar() static library, , have executable main() link against it.

afaict exact vc linking apparatus isn't officially documented, surveyed raymond here. also, not work if check 'use library dependency inputs'


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