Didier Godefroy wrote:
You should first look the line 43 in :
/srv/build/obj/alphaev56-dec-osf5.1b/libstdc++-v3/include/tr1_impl/cctype
cctype there has this:
#if _GLIBCXX_USE_C99_CTYPE_TR1
#undef isblank
namespace std
{
_GLIBCXX_BEGIN_NAMESPACE_TR1
using ::isblank;
_GLIBCXX_END_NAMESPACE_TR1
}
#endif
And the line 43 is of course the one with isblank
because the problem is there... My thought (by the sources) is that
somehow the '_GLIBCXX_USE_C99_CTYPE_TR1' (in
'libstdc++-v3/include/tr1/cctype'), is defined by the configure... What
it means and why could be investigated from the possible 'config.h' in
libstdc++-v3 build directory....
Ok, it is definitely defining it:
/* Define if C99 functions in <ctype.h> should be imported in <tr1/cctype>
in
namespace std::tr1. */
#define _GLIBCXX_USE_C99_CTYPE_TR1 1
I would simply comment this away. After configuring for Linux there
was a '/* #undef _GLIBCXX_USE_C99_CTYPE_TR1 */' instead of this...
After the fix it may happen that 'make' rebuilds everything in the
'$target/libstdc++-v3' using the fixed 'config.h'.
And in config.log:
configure:39006: checking for ISO C99 support to TR1 in <ctype.h>
configure:39031: /srv/build/obj/./gcc/xgcc -shared-libgcc
-B/srv/build/obj/./gcc -nostdinc++
-L/srv/build/obj/alphaev56-dec-osf5.1b/libstdc++-v3/src -L/sr$
configure:39037: $? = 0
configure:39041: test -z
|| test ! -s conftest.err
configure:39044: $? = 0
configure:39047: test -s conftest.o
configure:39050: $? = 0
configure:39063: result: yes
And so GLIBCXX_USE_C99_CTYPE_TR1 is defined after that.
So something isn't working right in this test and it returns a wrong result.
Hmmm, searching the check in 'configure' gives :
echo "$as_me:$LINENO: checking for ISO C99 support to TR1 in
<ctype.h>" >&5
echo $ECHO_N "checking for ISO C99 support to TR1 in <ctype.h>...
$ECHO_C" >&6
if test "${ac_c99_ctype_tr1+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <ctype.h>
int
main ()
{
int ch;
int ret;
ret = isblank(ch);
;
return 0;
}
So it seems that maybe 'isblank()' was found in the system C libraries
(in 'libc') but there was no prototype for it anywhere... This seems
to be a bug in 'fixinc' which should fix the "buggy" target headers...
Solaris 10 has in 'include/iso/ctype_c99.h' :
/*
* The following have been added as a result of the ISO/IEC 9899:1999
* standard. For a strictly conforming C application, visibility is
* contingent on the value of __STDC_VERSION__ (see sys/feature_tests.h).
* For non-strictly conforming C applications, there are no restrictions
* on the C namespace.
*/
#if defined(__STDC__)
#if (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX)) || \
defined(_XPG6) || defined(_STDC_C99) || defined(__EXTENSIONS__)
extern int isblank(int);
#endif
The Tru64 V5.1b headers maybe should have something equivalent if there
is this function implemented...
