Hi Phil, hi Volki, I think wrapping Volkis version into #ifdef _AIX plus adding a small comment sounds like a good idea .
In the meantime we try to find out how latest xlC version 13 behaves . Best regards, Matthias > -----Original Message----- > From: Phil Race [mailto:philip.r...@oracle.com] > Sent: Donnerstag, 14. Dezember 2017 17:53 > To: Volker Simonis <volker.simo...@gmail.com>; Baesken, Matthias > <matthias.baes...@sap.com> > Cc: Simonis, Volker <volker.simo...@sap.com>; 2d-dev@openjdk.java.net > Subject: Re: [OpenJDK 2D-Dev] RFR : 8193515 : AIX : new Harfbuzz 1.7.1 > version fails to compile > > Whatever we do, can it be wrapped in an appropriate #ifdef AIX so that > other platforms are guaranteed to be unaffected ? > > For upstream you can report it at github > https://github.com/harfbuzz/harfbuzz > and see how Behdad would like to handle it. > > I expect he would want it removed once the compiler bug is fixed. > > -pgil. > > On 12/14/2017 08:13 AM, Volker Simonis wrote: > > Hi Matthias, > > > > thanks for addressing this issue! > > > > I'm pretty sure that his is a compiler bug and I have a short > > reproducer which I'll send to IBM. > > > > The problem is that xlC can't distinguish a static member function > > (which uses an ordinary function call) from a non-static member > > function (which uses a member function call) with the same name. > > > > I've just found a slightly more elegant (and less intrusive) fix. We > > can help the compiler to find the correct method by simply casting it > > to the correct version: > > > > diff -r be065f758154 > > src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot-shape- > complex-arabic-fallback.hh > > --- a/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot- > shape-complex-arabic-fallback.hh > > Thu Dec 14 12:49:47 2017 +0530 > > +++ b/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot- > shape-complex-arabic-fallback.hh > > Thu Dec 14 17:11:49 2017 +0100 > > @@ -77,7 +77,7 @@ > > > > /* Bubble-sort or something equally good! > > * May not be good-enough for presidential candidate interviews, > > but good-enough for us... */ > > - hb_stable_sort (&glyphs[0], num_glyphs, OT::GlyphID::cmp, > &substitutes[0]); > > + hb_stable_sort (&glyphs[0], num_glyphs, (int(*)(const OT::GlyphID > > *, const OT::GlyphID *)) OT::GlyphID::cmp, &substitutes[0]); > > > > OT::Supplier<OT::GlyphID> glyphs_supplier (glyphs, num_glyphs); > > OT::Supplier<OT::GlyphID> substitutes_supplier (substitutes, > num_glyphs); > > @@ -126,7 +126,7 @@ > > first_glyphs_indirection[num_first_glyphs] = first_glyph_idx; > > num_first_glyphs++; > > } > > - hb_stable_sort (&first_glyphs[0], num_first_glyphs, > > OT::GlyphID::cmp, &first_glyphs_indirection[0]); > > + hb_stable_sort (&first_glyphs[0], num_first_glyphs, (int(*)(const > > OT::GlyphID *, const OT::GlyphID *)) OT::GlyphID::cmp, > > &first_glyphs_indirection[0]); > > > > /* Now that the first-glyphs are sorted, walk again, populate > > ligatures. */ > > for (unsigned int i = 0; i < num_first_glyphs; i++) > > > > I'll also try to bring this change upstream into Harfbuzz, but we need > > to push this into the new jdk/jdk10 repo because there will be no more > > HarfBuzz integration for Java 10. > > > > Regards, > > Volker > > > > > > On Thu, Dec 14, 2017 at 4:10 PM, Baesken, Matthias > > <matthias.baes...@sap.com> wrote: > >> Hello, after upgrading to new Harfbuzz 1.7.1 the openjdk build fails on > >> AIX. > >> > >> > >> > >> I created the following bug : > >> > >> https://bugs.openjdk.java.net/browse/JDK-8193515 > >> > >> > >> > >> The compile error we get on AIX (using XLC 12.1) is : > >> > >> > >> > >> === Output from failing command(s) repeated here === > >> > >> * For target > >> support_native_java.desktop_libfontmanager_hb-ot-shape-complex- > arabic.o: > >> > >> " > >> /jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot- > shape-complex-arabic-fallback.hh", > >> line 80.3: 1540-0218 (S) The call does not match any parameter list for > >> "hb_stable_sort". > >> > >> " > >> /jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb- > private.hh", > >> line 723.1: 1540-1283 (I) "template <class T, class T2> hb_stable_sort(T *, > >> unsigned int, int (*)(const T *, const T *), T2 *)" is not a viable > >> candidate. > >> > >> " > >> /jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot- > shape-complex-arabic-fallback.hh", > >> line 80.43: 1540-0298 (I) Template argument deduction cannot be > performed > >> using the function "template int cmp(Type2) const". > >> > >> " > >> /jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb- > private.hh", > >> line 748.1: 1540-1283 (I) "template <class T> hb_stable_sort(T *, unsigned > >> int, int (*)(const T *, const T *))" is not a viable candidate. > >> > >> " > >> /jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot- > shape-complex-arabic-fallback.hh", > >> line 80.3: 1540-0215 (I) The wrong number of arguments has been > specified > >> for "template <class T> hb_stable_sort(T *, unsigned int, int (*)(const T > >> *, > >> const T *))". > >> > >> > >> > >> " > >> /jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot- > shape-complex-arabic-fallback.hh", > >> line 129.3: 1540-0218 (S) The call does not match any parameter list for > >> "hb_stable_sort". > >> > >> " > >> /jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb- > private.hh", > >> line 723.1: 1540-1283 (I) "template <class T, class T2> hb_stable_sort(T *, > >> unsigned int, int (*)(const T *, const T *), T2 *)" is not a viable > >> candidate. > >> > >> " > >> /jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot- > shape-complex-arabic-fallback.hh", > >> line 129.55: 1540-0298 (I) Template argument deduction cannot be > performed > >> using the function "template int cmp(Type2) const". > >> > >> " > >> /jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb- > private.hh", > >> line 748.1: 1540-1283 (I) "template <class T> hb_stable_sort(T *, unsigned > >> int, int (*)(const T *, const T *))" is not a viable candidate. > >> > >> " > >> /jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot- > shape-complex-arabic-fallback.hh", > >> line 129.3: 1540-0215 (I) The wrong number of arguments has been > specified > >> for "template <class T> hb_stable_sort(T *, unsigned int, int (*)(const T > >> *, > >> const T *))". > >> > >> > >> > >> The compilation “complains” about the hb_stable_sort template used in > >> hb-ot-shape-complex-arabic-fallback.hh . After looking a bit into this , > >> the third parameter > >> > >> OT::GlyphID::cmp > >> > >> of > >> > >> hb_stable_sort (&glyphs[0], num_glyphs, OT::GlyphID::cmp, > >> &substitutes[0]); > >> > >> > >> > >> seems to trigger this XLC 12 issue . > >> > >> XLC 12 does not like the fact that we have two cmp functions (one a > >> template) in > >> > >> > >> > >> hb-open-type-private.hh : > >> > >> > >> > >> 610 template <typename Type, unsigned int Size> > >> > >> 611 struct IntType > >> > >> 612 { > >> > >> .... > >> > >> 617 static inline int cmp (const IntType<Type,Size> *a, const > >> IntType<Type,Size> *b) { return b->cmp (*a); } > >> > >> 622 > >> > >> 623 template <typename Type2> > >> > >> 624 inline int cmp (Type2 a) const > >> > >> 625 { > >> > >> > >> > >> ( GlyphID is an IntType ) > >> > >> This looks like an XLC bug, however it is pretty easy to workaround it by > >> using a helper compare-function with a unique name (issue with cmp is > that > >> it is not unique, that confuses XLC ). > >> > >> See this webrev : > >> > >> > >> > >> http://cr.openjdk.java.net/~mbaesken/webrevs/8193515/ > >> > >> > >> > >> Please review it. > >> > >> > >> > >> > >> > >> Thanks, Matthias
