Function Interposition is not work… | Apple Developer Forums

Function Interposition is not working on iOS 14 beta

Hi,
We have a use case in our app where we wanted to interpose few system calls like socket etc.. It used to work perfectly till iOS 13, but on iOS 14 those interposed functions are not getting invoked

We are using below snippet for function interposing as documented in mac open source https://opensource.apple.com/source/dyld/dyld-733.6/include/mach-o/dyld-interposing.h.auto.html

Code Block #define DYLD_INTERPOSE(_replacement,_replacee) \
	 attribute((used)) static struct{ const void* replacement; const void* replacee; } _interpose_##_replacee \
						attribute ((section ("DATA,interpose"))) = { (const void*)(unsigned long)&_replacement, (const void*)(unsigned long)&_replacee };
#endif

Code Block
#define DYLD_INTERPOSE(_replacement,_replacee) \
attribute((used)) static struct{ const void* replacement; const void* replacee; } _interpose_##_replacee \
attribute ((section ("DATA,interpose"))) = { (const void)(unsigned long)&_replacement, (const void)(unsigned long)&_replacee };

#endif

Could you please help us fixing this issue