Using the Boost preprocessor library, I'm getting an unexpected diagnostic from
the HP-UX C++ compiler (aCC, version "HP ANSI C++ B3910B A.03.34"). The
generated output -- see the last line of "Compiler output", below -- *is*
correct. I'm using Boost_1_28_0.
Is my use of the preprocessor library incorrect?
Ellis Cohen
========================================================================
Code fragment triggering the diagnostic:
#include
#include
#include
#include
#define FOO0 (0, double, some_value)
#define FOO1 (0, double, some_other_value)
#define FOO2 (0, double, some_other_other_value)
#define FOO_CNT 3
#define PPV(I) FOO##I
#define PPV_FLAG(I) BOOST_PP_TUPLE_ELEM(3,0,PPV(I))
#define PPV_TYPE(I) BOOST_PP_TUPLE_ELEM(3,1,PPV(I))
#define PPV_NAME(I) BOOST_PP_TUPLE_ELEM(3,2,PPV(I))
#define BOOST_PP_DEF(I,_) BOOST_PP_COMMA_IF(I) BOOST_PP_CAT(d_,PPV_NAME(I))(BOOST_PP_CAT(other.d_,PPV_NAME(I)))
BOOST_PP_REPEAT(FOO_CNT, BOOST_PP_DEF, _)
#undef BOOST_PP_DEF
========================================================================
Compiler command:
/opt/aCC/bin/aCC \
-Iboost_includes \
-Wc,-ansi_for_scope,on \
-Aa \
+inst_compiletime +inst_v \
-E -c Isrc/boost_bug.C -o boost_bug.o
========================================================================
Compiler output:
Warning (anachronism) 823: "Isrc/boost_bug.C", line 18 # Redundant preprocessing concatenation operation results in two
valid preprocessing tokens. Depending on this implementation defined behavior will result in non-portable code.
BOOST_PP_REPEAT(FOO_CNT, BOOST_PP_DEF, _)
^^^^^^^^^^^^^^^
Warning (anachronism) 823: "Isrc/boost_bug.C", line 18 # Redundant preprocessing concatenation operation results in two
valid preprocessing tokens. Depending on this implementation defined behavior will result in non-portable code.
BOOST_PP_REPEAT(FOO_CNT, BOOST_PP_DEF, _)
^^^^^^^^^^^^^^^
Warning (anachronism) 823: "Isrc/boost_bug.C", line 18 # Redundant preprocessing concatenation operation results in two
valid preprocessing tokens. Depending on this implementation defined behavior will result in non-portable code.
BOOST_PP_REPEAT(FOO_CNT, BOOST_PP_DEF, _)
^^^^^^^^^^^^^^^
#line 1 "Isrc/boost_bug.C"
#line 1 "boost_includes/boost/preprocessor/cat.hpp"
#line 2 "Isrc/boost_bug.C"
#line 1 "boost_includes/boost/preprocessor/comma_if.hpp"
#line 1 "boost_includes/boost/preprocessor/comma.hpp"
#line 17 "boost_includes/boost/preprocessor/comma_if.hpp"
#line 1 "boost_includes/boost/preprocessor/empty.hpp"
#line 18 "boost_includes/boost/preprocessor/comma_if.hpp"
#line 1 "boost_includes/boost/preprocessor/if.hpp"
#line 1 "boost_includes/boost/preprocessor/logical/bool.hpp"
#line 17 "boost_includes/boost/preprocessor/if.hpp"
#line 1 "boost_includes/boost/preprocessor/tuple/elem.hpp"
#line 18 "boost_includes/boost/preprocessor/if.hpp"
#line 19 "boost_includes/boost/preprocessor/comma_if.hpp"
#line 3 "Isrc/boost_bug.C"
#line 1 "boost_includes/boost/preprocessor/repeat.hpp"
#line 4 "Isrc/boost_bug.C"
#line 18
d_some_value( other.d_some_value) , d_some_other_value( other.d_some_other_value) , d_some_other_other_value( other.d_some_other_other_value)
