[issue24381] Got warning when compiling ffi.c on Mac

[Vajrasky Kok]

New submission from Vajrasky Kok:

On my OS X Yosemite 10.10.3, I got this warning when compiling Modules/_ctypes/libffi_osx/ffi.c.

gcc -Wno-unused-result -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Werror=declaration-after-statement -I_ctypes/darwin -I/Users/sky/Code/python/cpython/Modules/_ctypes/libffi_osx/include -I/Users/sky/Code/python/cpython/Modules/_ctypes/libffi_osx/powerpc -I./Include -I. -IInclude -I/usr/local/include -I/Users/sky/Code/python/cpython/Include -I/Users/sky/Code/python/cpython -c /Users/sky/Code/python/cpython/Modules/_ctypes/libffi_osx/ffi.c -o build/temp.macosx-10.9-x86_64-3.6-pydebug/Users/sky/Code/python/cpython/Modules/_ctypes/libffi_osx/ffi.o -DMACOSX
/Users/sky/Code/python/cpython/Modules/_ctypes/libffi_osx/ffi.c:108:1: warning: unused function 'struct_on_stack' [-Wunused-function]
struct_on_stack(
^
1 warning generated.

Here is the patch that I think can fix the warning.

----------
components: Macintosh
files: fix_ffi_compile_warning.patch
keywords: patch
messages: 244825
nosy: ned.deily, ronaldoussoren, vajrasky
priority: normal
severity: normal
status: open
title: Got warning when compiling ffi.c on Mac
versions: Python 3.5, Python 3.6
Added file: http://bugs.python.org/file39618/fix_ffi_compile_warning.patch

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