id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
3522	conflicting Block.h on Snow Leopard	PaulLiu		"Using GHC to compile C programs that includes <!CoreServices/CoreServices.h> will result in the following error:

{{{
In file included from /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/FSEvents.h:28,
                 from /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/CarbonCore.h:218,
                 from /System/Library/Frameworks/CoreServices.framework/Frameworks/AE.framework/Headers/AE.h:20,
                 from /System/Library/Frameworks/CoreServices.framework/Headers/CoreServices.h:21,

                 from test.c:1:0: 

/Library/Frameworks/GHC.framework/Versions/610/usr/lib/ghc-6.10.4/include/Block.h:51:0:
     error: expected specifier-qualifier-list before ‘StgPtr’

...
}}}

This is because somewhere down !CoreServices.h it includes Block.h, and expects it to be /usr/include/Block.h, which is a new file introduced since Snow Leopard (OS X 10.6). This is in direct conflict to the Block.h under GHC's include directory, which is somehow searched prior to the system directory.
"	bug	closed	normal		Compiler (FFI)	6.10.4	fixed			MacOS X	x86		Unknown				
