On Fri, 29 Aug 2014 02:56:01 +0200
Gabor Greif ggr...@gmail.com wrote:
Devs,
I have built an UNREGISTERISED GHC, and the C-compiler used behind the
scenes is clang. Now I get literally millions of warnings of the below
kind:
+/var/folders/k9/fj_1d5h17m7c4gbyp2srqrhmgq/T/ghc11601_0/ghc11601_4.hc:688:1:
+ warning: attribute declaration must precede definition
[-Wignored-attributes]
+II_(s4Vv_closure);
+^
+
+/Users/ggreif/ghc-head/includes/Stg.h:213:63:
+ note: expanded from macro 'II_'
+#define II_(X) static StgWordArray (X) GNU_ATTRIBUTE(aligned (8))
+ ^
+
+/Users/ggreif/ghc-head/includes/Stg.h:175:42:
+ note: expanded from macro 'GNU_ATTRIBUTE'
+#define GNU_ATTRIBUTE(at) __attribute__((at))
+ ^
+
+/var/folders/k9/fj_1d5h17m7c4gbyp2srqrhmgq/T/ghc11601_0/ghc11601_4.hc:588:16:
+ note: previous definition is here
+static StgWord s4Vv_closure[] = {
+ ^
It seems like the II_ and EI_ prototypes *follow* the real thing,
and because clang is more picky with attribute placement, we get all
those warnings.
They just occur many times in the source, thus not only before but also after
definition.
compiler/cmm/PprC.hs:pprExternDecl is the function that puts together
the II_(...) and EI_(...), but where does the static StgWord
s4Vv_closure[] = { come from?
pprWordArray :: CLabel - [CmmStatic] - SDoc
I just want to flip the order of their occurrence.
I think it would be a good thing to split .hc file lifting
all external and local declarations up (and print only
unique ones). It should shrink .hc file size a bit and
make it nicer to read.
--
Sergei
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