[llvm-dev] Weak symbol function in shared library and strong symbol function in main problem

[Simone Atzeni via llvm-dev]

Hi,

I have a pass that add a function in the module where the “main” is. Then, I have the same function declared as weak symbol in a shared library that I load at runtime with LD_PRELOAD.
When I run a program the weak symbol function gets called over the function was added by the pass.

Is it a correct behavior? Is there a way to call the strong symbol function when it’s present in the module?
In other words, when I don’t apply the pass I want the program to call the weak symbol function, otherwise when I apply the pass I want the program to call the function added by the pass.

Thanks!
Best,
Simone