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libffi-3.1 on iOS


Dear libffi crew,

Bug report:

I just tried libffi-3.1 and it produced the issues below.

Can the warnings be eliminated and the link error fixed?

Sincerely,

Ed

---------------------------

Running libffi on iOS (iPhone) simulator works for both 32 and 64 bit simulators using libffi-3.0.14-rc0

But, with libffi-3.1 it works for 64 bit simulator, but fails to link for 32 bit simulator; giving the following:

(null): "_ffi_call_win32", referenced from:
(null): "_ffi_closure_FASTCALL", referenced from:
(null): "_ffi_closure_STDCALL", referenced from:
(null): "_ffi_closure_THISCALL", referenced from:
(null): Linker command failed with exit code 1 (use -v to see invocation)

Also, on both the 32 and 64 bit segments the linker gives this warning:

(null): Could not create compact unwind for .LFB3: non-standard register 5 being saved in prolog

which it gave for both 3.0.14-rc0 and 3.1. However, the warning does not seem to cause a problem.

On the ARM target the linker gives the following warnings:

ld: warning: arm64 function not 4-byte aligned: ltmp0 from /libffi.a(sysv_arm64.o)
ld: warning: arm64 function not 4-byte aligned: _ffi_call_SYSV from /libffi.a(sysv_arm64.o)
ld: warning: arm64 function not 4-byte aligned: _ffi_closure_SYSV from /libffi.a(sysv_arm64.o)

which also do not seem to cause a problem.

It would be nice to fix the build and code so it didn't produce the error and warnings.


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