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[PATCH] fix for sigsegv in gcc 4.6


i think it's about 5 month between preceeding one.
missing WINAPI(__stdcall) which should had been added for function pointer type is now cause of SIGSEGV. hence it is added.
this changes applies to winsup/cygwin/environ,autoload.cc winsup/utils/mkpasswd,mkgroup.c,loadlib.h,cygpath.cc
and in autoload.cc, ebp+4 maybe not frame pointer, but we can make sure it replaces return address by using __builtin_frame_address.
this change applies to winsup/cygwin/autoload.cc


patch,changelog modified are attached as you can see.
please review it.

Regards.

Attachment: winsup.diff
Description: Text document


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