[Bug libstdc++/39238] New: trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[Bug libstdc++/39238] New: trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[rob1weld at aol dot com]

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I am getting this Warning: "O0g.gch: created and used with differing settings
of '-momit-leaf-frame-pointer'"

and this error:

# gcc/xgcc -v
Using built-in specs.
Target: i386-pc-solaris2.11
Configured with: ../gcc_trunk/configure --prefix=/usr/local/gcc4
--enable-languages=ada,c,c++,fortran,java,objc,obj-c++ --enable-shared
--disable-static --enable-multilib --enable-decimal-float
--with-long-double-128 --with-included-gettext --enable-stage1-checking
--enable-checking=release --with-tune=k8 --with-cpu=k8 --with-arch=k8
--with-gnu-as --with-as=/usr/local/bin/as --with-gnu-ld
--with-ld=/usr/local/bin/ld --with-gmp=/usr/local --with-mpfr=/usr/local
--without-ppl
Thread model: posix
gcc version 4.4.0 20090218 (experimental) [trunk revision 144279] (GCC) 

# gmake
...
Making all in include
gmake[4]: Entering directory
`/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include'
mkdir -p ./i386-pc-solaris2.11/bits/stdtr1c++.h.gch
g++ -Winvalid-pch -x c++-header -g -O2  
-I/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/i386-pc-solaris2.11
-I/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include
-I/usr/share/src/gcc_trunk/libstdc++-v3/libsupc++ -O2 -g
/usr/share/src/gcc_trunk/libstdc++-v3/include/precompiled/stdtr1c++.h -o
i386-pc-solaris2.11/bits/stdtr1c++.h.gch/O2g.gch
/usr/share/src/gcc_trunk/libstdc++-v3/include/precompiled/stdtr1c++.h:34:25:
warning:
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/i386-pc-solaris2.11/bits/stdc++.h.gch/O0g.gch:
created and used with differing settings of '-momit-leaf-frame-pointer'
In file included from
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1/cfenv:51,
                 from
/usr/share/src/gcc_trunk/libstdc++-v3/include/precompiled/stdtr1c++.h:38:
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:54:
error: ‘::fenv_t’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:55:
error: ‘::fexcept_t’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:58:
error: ‘::feclearexcept’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:59:
error: ‘::fegetexceptflag’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:60:
error: ‘::feraiseexcept’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:61:
error: ‘::fesetexceptflag’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:62:
error: ‘::fetestexcept’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:64:
error: ‘::fegetround’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:65:
error: ‘::fesetround’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:67:
error: ‘::fegetenv’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:68:
error: ‘::feholdexcept’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:69:
error: ‘::fesetenv’ has not been declared
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/tr1_impl/cfenv:70:
error: ‘::feupdateenv’ has not been declared
gmake[4]: *** [i386-pc-solaris2.11/bits/stdtr1c++.h.gch/O2g.gch] Error 1
gmake[4]: Leaving directory
`/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include'
gmake[3]: *** [all-recursive] Error 1
gmake[3]: Leaving directory
`/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3'
gmake[2]: *** [all] Error 2
gmake[2]: Leaving directory
`/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3'
gmake[1]: *** [all-target-libstdc++-v3] Error 2
gmake[1]: Leaving directory `/usr/share/src/gcc_build'
gmake: *** [all] Error 2

All was well last week ...


Looking back at an old Build Log I tried this command:

/usr/share/src/gcc_build/./gcc/xgcc -shared-libgcc
-B/usr/share/src/gcc_build/./gcc -nostdinc++
-L/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/src
-L/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/src/.libs
-B/usr/local/i386-pc-solaris2.11/bin/ -B/usr/local/i386-pc-solaris2.11/lib/
-isystem /usr/local/i386-pc-solaris2.11/include -isystem
/usr/local/i386-pc-solaris2.11/sys-include -Winvalid-pch -x c++-header -g -O2  
-I/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/i386-pc-solaris2.11
-I/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include
-I/usr/share/src/gcc_trunk/libstdc++-v3/libsupc++ -O2 -g
/usr/share/src/gcc_trunk/libstdc++-v3/include/precompiled/stdtr1c++.h -o
i386-pc-solaris2.11/bits/stdtr1c++.h.gch/O2g.gch


works without error, but ...


# gmake
(short wait)
...
i386-pc-solaris2.11/libstdc++-v3/include/i386-pc-solaris2.11/bits/stdtr1c++.h.gch/O2g.gch:
created by a different GCC executable
In file included from
/usr/share/src/gcc_trunk/libstdc++-v3/include/precompiled/extc++.h:34:
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/i386-pc-solaris2.11/bits/stdtr1c++.h:34:25:
warning:
/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/i386-pc-solaris2.11/bits/stdc++.h.gch/O0g.gch:
created and used with differing settings of '-momit-leaf-frame-pointer'
...

Now it believes that xgcc is "different GCC executable", investigating ...

Rob


-- 
           Summary: trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has
                    not been declared
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rob1weld at aol dot com
 GCC build triplet: i386-pc-solaris2.11
  GCC host triplet: i386-pc-solaris2.11
GCC target triplet: i386-pc-solaris2.11


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[rob1weld at aol dot com]

------- Comment #1 from rob1weld at aol dot com  2009-02-19 02:21 -------
New warning "different GCC executable" was just 'xgcc' instead of 'g++'.


Next error in 'extc++.h.gch/O2g.gch' is fixed by:

/usr/share/src/gcc_build/./gcc/xgcc -shared-libgcc
-B/usr/share/src/gcc_build/./gcc -nostdinc++
-L/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/src
-L/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/src/.libs
-B/usr/local/i386-pc-solaris2.11/bin/ -B/usr/local/i386-pc-solaris2.11/lib/
-isystem /usr/local/i386-pc-solaris2.11/include -isystem
/usr/local/i386-pc-solaris2.11/sys-include -Winvalid-pch -x c++-header -g -O2  
-I/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include/i386-pc-solaris2.11
-I/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/include
-I/usr/share/src/gcc_trunk/libstdc++-v3/libsupc++ -O2 -g
/usr/share/src/gcc_trunk/libstdc++-v3/include/precompiled/extc++.h -o
i386-pc-solaris2.11/bits/extc++.h.gch/O2g.gch

Rob


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[rob1weld at aol dot com]

------- Comment #2 from rob1weld at aol dot com  2009-02-19 02:30 -------
That worked.

The build continues until it fails here:

# gmake
(5 minutes)
...
Making all in src
gmake[4]: Entering directory
`/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/src'
...
 -DPIC -o .libs/parallel_settings.o
/bin/sh ../libtool --tag CXX --mode=link g++ -Wl,-O1 -Wl,-z,relro 
-fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual 
-fdiagnostics-show-location=once  -ffunction-sections -fdata-sections   -o
libstdc++.la -rpath /usr/local/gcc4/lib -version-info 6:11:0  -lm  atomic.lo
bitmap_allocator.lo pool_allocator.lo mt_allocator.lo codecvt.lo
compatibility.lo complex_io.lo ctype.lo debug.lo functexcept.lo hash.lo
hash_c++0x.lo globals_io.lo hashtable.lo hashtable_c++0x.lo ios.lo
ios_failure.lo ios_init.lo ios_locale.lo limits.lo limits_c++0x.lo list.lo
debug_list.lo locale.lo locale_init.lo locale_facets.lo localename.lo
math_stubs_float.lo math_stubs_long_double.lo stdexcept.lo strstream.lo
system_error.lo tree.lo allocator-inst.lo concept-inst.lo fstream-inst.lo
ext-inst.lo ios-inst.lo iostream-inst.lo istream-inst.lo istream.lo
locale-inst.lo misc-inst.lo ostream-inst.lo sstream-inst.lo streambuf-inst.lo
streambuf.lo string-inst.lo valarray-inst.lo wlocale-inst.lo wstring-inst.lo
mutex.lo condition_variable.lo chrono.lo thread.lo atomicity.lo
codecvt_members.lo collate_members.lo ctype_members.lo messages_members.lo
monetary_members.lo numeric_members.lo time_members.lo basic_file.lo
c++locale.lo  parallel_list.lo parallel_settings.lo 
../libsupc++/libsupc++convenience.la 
libtool: link: g++ -shared -nostdlib /usr/lib/crti.o /usr/lib/values-Xa.o
/usr/local/lib/gcc/i386-pc-solaris2.11/4.4.0/crtbegin.o  .libs/atomic.o
.libs/bitmap_allocator.o .libs/pool_allocator.o .libs/mt_allocator.o
.libs/codecvt.o .libs/compatibility.o .libs/complex_io.o .libs/ctype.o
.libs/debug.o .libs/functexcept.o .libs/hash.o .libs/hash_c++0x.o
.libs/globals_io.o .libs/hashtable.o .libs/hashtable_c++0x.o .libs/ios.o
.libs/ios_failure.o .libs/ios_init.o .libs/ios_locale.o .libs/limits.o
.libs/limits_c++0x.o .libs/list.o .libs/debug_list.o .libs/locale.o
.libs/locale_init.o .libs/locale_facets.o .libs/localename.o
.libs/math_stubs_float.o .libs/math_stubs_long_double.o .libs/stdexcept.o
.libs/strstream.o .libs/system_error.o .libs/tree.o .libs/allocator-inst.o
.libs/concept-inst.o .libs/fstream-inst.o .libs/ext-inst.o .libs/ios-inst.o
.libs/iostream-inst.o .libs/istream-inst.o .libs/istream.o .libs/locale-inst.o
.libs/misc-inst.o .libs/ostream-inst.o .libs/sstream-inst.o
.libs/streambuf-inst.o .libs/streambuf.o .libs/string-inst.o
.libs/valarray-inst.o .libs/wlocale-inst.o .libs/wstring-inst.o .libs/mutex.o
.libs/condition_variable.o .libs/chrono.o .libs/thread.o .libs/atomicity.o
.libs/codecvt_members.o .libs/collate_members.o .libs/ctype_members.o
.libs/messages_members.o .libs/monetary_members.o .libs/numeric_members.o
.libs/time_members.o .libs/basic_file.o .libs/c++locale.o .libs/parallel_list.o
.libs/parallel_settings.o  -Wl,--whole-archive
../libsupc++/.libs/libsupc++convenience.a -Wl,--no-whole-archive  -Wl,-rpath
-Wl,/usr/local/lib -Wl,-rpath -Wl,/usr/local/lib
-L/usr/local/lib/gcc/i386-pc-solaris2.11/4.4.0
-L/usr/local/lib/gcc/i386-pc-solaris2.11/4.4.0/../../../../i386-pc-solaris2.11/lib
-L/usr/local/lib/gcc/i386-pc-solaris2.11/4.4.0/../../..
/usr/local/lib/libstdc++.so -lm -lgcc_s
/usr/local/lib/gcc/i386-pc-solaris2.11/4.4.0/crtend.o /usr/lib/crtn.o  -Wl,-O1
-Wl,-z -Wl,relro   -Wl,-soname -Wl,libstdc++.so.6 -o .libs/libstdc++.so.6.0.11
ld: fatal: option -z has illegal argument `relro'
usage: ld [-6:abc:d:e:f:h:il:mo:p:rstu:z:B:CD:F:GI:L:M:N:P:Q:R:S:VW:Y:?]
file(s)
        [-64]           enforce a 64-bit link-edit
        [-a]            create an absolute file
        [-b]            do not do special PIC relocations in a.out
        [-B direct | nodirect]
                        establish direct bindings, or inhibit direct binding
                        to, the object being created
        [-B dynamic | static]
                        search for shared libraries|archives
        [-B eliminate]  eliminate unqualified global symbols from the
                        symbol table
        [-B group]      relocate object from within group
        [-B local]      reduce unqualified global symbols to local
        [-B reduce]     process symbol reductions
        [-B symbolic]   bind external references to definitions when creating
                        shared objects
        [-c name]       record configuration file `name'
        [-C]            demangle C++ symbol name diagnostics
        [-d y | n]      operate in dynamic|static mode
        [-D token,...]  print diagnostic messages
        [-e epsym], [--entry epsym]
                        use `epsym' as entry point address
        [-f name], [--auxiliary name]
                        specify library for which this file is an auxiliary
                        filter
        [-F name], [--filter name]
                        specify library for which this file is a filter
        [-G], [-shared]
                        create a shared object
        [-h name], [--soname name]
                        use `name' as internal shared object identifier
        [-i]            ignore LD_LIBRARY_PATH setting
        [-I name]       use `name' as path of interpreter
        [-l x], [--library x]
                        search for libx.so or libx.a
        [-L path], [--library-path path]
                        search for libraries in directory `path'
        [-m]            print memory map
        [-M mapfile]    use processing directives contained in `mapfile'
        [-N string]     create a dynamic dependency for `string'
        [-o outfile], [--output outfile]
                        name the output file `outfile'
        [-p auditlib]   identify audit library to accompany this object
        [-P auditlib]   identify audit library for processing the dependencies
                        of this object
        [-Q y | n]      do|do not place version information in output file
        [-r], [--relocatable]
                        create a relocatable object
        [-R path], [-rpath path]
                        specify a library search path to be used at run time
        [-s], [--strip-all]
                        strip any symbol and debugging information
        [-S supportlib]
                        specify a link-edit support library
        [-t]            do not warn of multiply-defined symbols that have
                        different sizes or alignments
        [-u symname], [--undefined symname]
                        create an undefined symbol `symname'
        [-V], [--version]
                        print version information
        [-Y P,dirlist]  use `dirlist' as a default path when searching for
                        libraries
        [-z absexec]    when building an executable absolute symbols
                        referenced in dynamic objects are promoted to
                        the executable
        [-z allextract | defaultextract | weakextract],
        [--whole-archive | --no-whole-archive]
                        extract all member files, only members that resolve
                        undefined or tentative symbols, or allow extraction of
                        archive members to resolve weak references from 
                        archive files
        [-z altexec64]  execute the 64-bit link-editor
        [-z combreloc | nocombreloc]
                        combine|do not combine multiple relocation sections
        [-z defs], [--no-undefined]
                        disallow undefined symbol references
        [-z direct | nodirect]
                        enable|disable direct binding to shared object
                        dependencies
        [-z endfiltee]  marks a filtee such that it will terminate a filters
                        search
        [-z finiarray=function]
                        name of function to be appended to the .finiarray
        [-z groupperm | nogroupperm]
                        enable|disable setting of group permissions
                        on dynamic dependencies
        [-z help], [--help]
                        print this usage message
        [-z ignore | record]
                        ignore|record unused dynamic dependencies
        [-z initarray=function]
                        name of function to be appended to the .initarray
        [-z initfirst]  mark object to indicate that its .init section should
                        be executed before the .init section of any other
                        objects
        [-z interpose]  dynamic object is to be an `interposer' on direct
                        bindings
        [-z lazyload | nolazyload]
                        enable|disable delayed loading of shared object
                        dependencies
        [-z ld32=arg1,arg2,...]
                        define arguments applicable to the 32-bit class of
ld(1)
        [-z ld64=arg1,arg2,...]
                        define arguments applicable to the 64-bit class of
ld(1)
        [-z loadfltr]   mark filter as requiring immediate loading of its
                        filtees at runtime
        [-z muldefs], [--allow-multiple-definition]
                        allow multiply-defined symbols
        [-z nocompstrtab]
                        disable compression of string tables
        [-z nodefs]     allow undefined symbol references
        [-z nodefaultlib]
                        mark object to ignore any default library search path
        [-z nodelete]   mark object as non-deletable
        [-z nodlopen]   mark object as non-dlopen()'able
        [-z nodump]     mark object as non-dldump()'able
        [-z noldynsym]  do not add a .SUNW_ldynsym section
        [-z now]        mark object as requiring non-lazy binding
        [-z nopartial]  expand any partially initialized symbols
        [-z noversion]  do not record any version sections
        [-z origin]     mark object as requiring $ORIGIN processing
        [-z preinitarray=function]
                        name of function to be appended to the .preinitarray
        [-z redlocsym]  reduce local syms in .symtab to a minimum
        [-z relaxreloc] relax rules used for relocations against COMDAT
sections
        [-z rescan]     after processing all arguments, rescan archive list
                        until no further member extraction occurs
        [-z rescan-now] immediately rescan archive list until
                        no further member extraction occurs
        [-z rescan-start archives... -z rescan-end],
        [--start-group archives... --end-group], [-( archives... -)]
                        rescan specified archive group upon reaching
                        the end of the group, until no further
                        member extraction occurs
        [-z target=platform]
                        target machine for cross linking
        [-z text]       disallow output relocations against text
        [-z textoff]    allow output relocations against text
        [-z textwarn]   warn if there are relocations against text
        [-z verbose]    generate warnings for suspicious processings
collect2: ld returned 1 exit status
gmake[4]: *** [libstdc++.la] Error 1
gmake[4]: Leaving directory
`/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3/src'
gmake[3]: *** [all-recursive] Error 1
gmake[3]: Leaving directory
`/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3'
gmake[2]: *** [all] Error 2
gmake[2]: Leaving directory
`/usr/share/src/gcc_build/i386-pc-solaris2.11/libstdc++-v3'
gmake[1]: *** [all-target-libstdc++-v3] Error 2
gmake[1]: Leaving directory `/usr/share/src/gcc_build'
gmake: *** [all] Error 2



The commands for ld are wrong. Let's try without "-Wl,-O1 -Wl,-z -Wl,relro":

...
 /usr/lib/crtn.o   -Wl,-soname -Wl,libstdc++.so.6 -o .libs/libstdc++.so.6.0.11
ld: fatal: symbol `__i686.get_pc_thunk.bx' is multiply-defined:
        (file /usr/local/lib/gcc/i386-pc-solaris2.11/4.4.0/crtbegin.o
type=FUNC; file ../libsupc++/.libs/libsupc++convenience.a(cp-demangle.o)
type=FUNC);
ld: fatal: recording name conflict: file `/usr/local/lib/libstdc++.so' and
soname option (-h, --soname) provide identical dependency names: libstdc++.so.6
ld: fatal: file processing errors. No output written to
.libs/libstdc++.so.6.0.11
collect2: ld returned 1 exit status


Rob


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[rob1weld at aol dot com]

------- Comment #3 from rob1weld at aol dot com  2009-02-19 02:36 -------
Even though I ./configured using "--with-gnu-ld --with-ld=/usr/local/bin/ld"
the scripts seemed to have decided to use the "gcc-used-for-build"'s choice
of 'ld' instead of the main ./configure scripts settings ...


# gcc -v
Using built-in specs.
Target: i386-pc-solaris2.11
Configured with: ../gcc_trunk/configure --build=i386-pc-solaris2.11
--enable-languages=ada,c,c++,fortran,java,objc,obj-c++ --enable-shared
--disable-static --enable-multilib --enable-decimal-float
--with-long-double-128 --with-included-gettext --enable-stage1-checking
--enable-checking=release --with-tune=k8 --with-cpu=k8 --with-arch=k8
--with-gnu-as --with-as=/usr/local/bin/as --without-gnu-ld
--with-ld=/usr/bin/ld --with-gmp=/usr/local --with-mpfr=/usr/local
--without-ppl
Thread model: posix
gcc version 4.4.0 20090218 (experimental) [trunk revision 144266] (GCC) 

Rob


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[rob1weld at aol dot com]

------- Comment #4 from rob1weld at aol dot com  2009-02-20 00:57 -------
(In reply to comment #3)
> Even though I ./configured using "--with-gnu-ld --with-ld=/usr/local/bin/ld"
> the scripts seemed to have decided to use the "gcc-used-for-build"'s choice
> of 'ld' instead of the main ./configure scripts settings ...
> 
The second Bug in this Report (about the Linker) is filed here:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39111

Comment #0 is the only remaining Bug in this thread.

Rob


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[bkoz at gcc dot gnu dot org]

------- Comment #5 from bkoz at gcc dot gnu dot org  2009-02-24 07:05 -------

Any chance you could narrow this down? The revision stated as problematic has
nothing to do with libstdc++. The file implicated, cfenv, has not had a change
in 3 months.

What was a revision that worked?

This seems fine, and is after your revision:
http://gcc.gnu.org/ml/gcc-testresults/2009-02/msg02143.html

Was this a temporary blip? If so, please close. If not, please provide some
more detail.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[rob1weld at aol dot com]

------- Comment #6 from rob1weld at aol dot com  2009-02-26 23:01 -------
(In reply to comment #5)
> Any chance you could narrow this down? The revision stated as problematic has
> nothing to do with libstdc++. The file implicated, cfenv, has not had a change
> in 3 months.
> 
> Was this a temporary blip? If so, please close. If not, please provide some
> more detail.

I am fairly convinced that this blip was a manifestation of the
"Build Machinery's" confusion resulting from Linker issues that
are best handled in the URL given in Comment #4 . I will close
this since fixing the other Bug seems to make this unreproducible.

Rob


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rob1weld at aol dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[vapier at gentoo dot org]

------- Comment #7 from vapier at gentoo dot org  2009-04-05 20:18 -------
we've hit this with gcc-4.3.3 with arm-softfloat-linux-gnueabi targets, and the
commit in question was for PR38000:
http://gcc.gnu.org/viewcvs?view=rev&revision=143194

/usr/arm-softfloat-linux-gnueabi/tmp/portage/sys-devel/gcc-4.3.3/work/gcc-4.3.3/libstdc++-v3/include/precompiled/stdtr1c++.h:38:
/usr/arm-softfloat-linux-gnueabi/tmp/portage/sys-devel/gcc-4.3.3/work/build/arm-softfloat-linux-gnueabi/libstdc++-v3/include/tr1_impl/cfenv:56:
error: '::fenv_t' has not been declared
/usr/arm-softfloat-linux-gnueabi/tmp/portage/sys-devel/gcc-4.3.3/work/build/arm-softfloat-linux-gnueabi/libstdc++-v3/include/tr1_impl/cfenv:57:
error: '::fexcept_t' has not been declared
/usr/arm-softfloat-linux-gnueabi/tmp/portage/sys-devel/gcc-4.3.3/work/build/arm-softfloat-linux-gnueabi/libstdc++-v3/include/tr1_impl/cfenv:60:
error: '::feclearexcept' has not been declared
/usr/arm-softfloat-linux-gnueabi/tmp/portage/sys-devel/gcc-4.3.3/work/build/arm-softfloat-linux-gnueabi/libstdc++-v3/include/tr1_impl/cfenv:61:
error: '::fegetexceptflag' has not been declared
/usr/arm-softfloat-linux-gnueabi/tmp/portage/sys-devel/gcc-4.3.3/work/build/arm-softfloat-linux-gnueabi/libstdc++-v3/include/tr1_impl/cfenv:62:
error: '::feraiseexcept' has not been declared
/usr/arm-softfloat-linux-gnueabi/tmp/portage/sys-devel/gcc-4.3.3/work/build/arm-softfloat-linux-gnueabi/libstdc++-v3/include/tr1_impl/cfenv:63:
error: '::fesetexceptflag' has not been declared

adding "-nostdinc++" to libstdc++-v3/include/Makefile.am seemed to fix it ...


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vapier at gentoo dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |toolchain at gentoo dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[maxposedon at gmail dot com]

------- Comment #8 from maxposedon at gmail dot com  2009-05-14 06:51 -------
in gcc-4.4.0 release this bug wasn't fixed


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maxposedon at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |maxposedon at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[vzapolskiy at gmail dot com]

------- Comment #9 from vzapolskiy at gmail dot com  2009-08-27 15:59 -------
Created an attachment (id=18438)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18438&action=view)
proposed patch for the problem resolution on gcc-4_4-branch


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[vzapolskiy at gmail dot com]

------- Comment #10 from vzapolskiy at gmail dot com  2009-08-27 16:00 -------
I have encountered the same problem with reverse cross compilation of gcc-4.3
branch on Linux for powerpc target. The problem was introduced in #38000
(revision 143194), and safe solution is just to revert the changes on the next
files:
* libstdc++-v3/include/c_global/cfenv
* libstdc++-v3/include/tr1/cfenv
* libstdc++-v3/include/tr1_impl/cfenv
* libstdc++-v3/include/c_compatibility/fenv.h

Proposed patch for gcc-4_4-branch (revision 151142) is attached.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[paolo dot carlini at oracle dot com]

------- Comment #11 from paolo dot carlini at oracle dot com  2009-08-27 16:09 -------
(In reply to comment #10)
> I have encountered the same problem with reverse cross compilation of gcc-4.3
> branch on Linux for powerpc target. The problem was introduced in #38000
> (revision 143194), and safe solution is just to revert the changes on the next
> files:

The change is not safe at all, unless you can convincingly explain why
reverting these bits does not break again 38000. 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[paolo dot carlini at oracle dot com]

------- Comment #12 from paolo dot carlini at oracle dot com  2009-08-27 16:31 -------
If we want to seriously approach the problem that apparently some users are
seeing together with cross compilers, we should first figure out what exactly
is going on: is _GLIBCXX_HAVE_FENV_H undefined for some reason? Note that in
general, as explained by Jakub in 38000, isn't correct to use #include_next in
a cXXX header including an XXX.h header. I'm adding Jakub in CC for this one
too...


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paolo dot carlini at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at redhat dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[armin76 at gentoo dot org]

------- Comment #13 from armin76 at gentoo dot org  2010-07-21 16:34 -------
(In reply to comment #7)
> we've hit this with gcc-4.3.3 with arm-softfloat-linux-gnueabi targets, and the
> commit in question was for PR38000:
> http://gcc.gnu.org/viewcvs?view=rev&revision=143194
> 
[snip]

Is this going to be fixed or?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238

[Bug libstdc++/39238] trunk revision 144279 - cfenv:54: error: ‘::fenv_t’ has not been declared

[pinskia at gcc dot gnu dot org]

------- Comment #14 from pinskia at gcc dot gnu dot org  2010-08-10 22:01 -------
See PR 40974 for the fenv_t issue.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39238