[Bug bootstrap/34780] New: Bootstrapping libstdc++-v3 failed

[Bug bootstrap/34780] New: Bootstrapping libstdc++-v3 failed

[dominiq at lps dot ens dot fr]

Bootstrapping libstdc++-v3 at revision 131520 failed with:

...
Making all in libsupc++
/bin/sh ../libtool --tag CXX --tag disable-shared --mode=compile
/opt/gcc/i686-darwin/./gcc/xgcc -shared-libgcc -B/opt/gcc/i686-darwin/./gcc
-nostdinc++ -L/opt/gcc/i686-darwin/i686-apple-darwin9/libstdc++-v3/src
-L/opt/gcc/i686-darwin/i686-apple-darwin9/libstdc++-v3/src/.libs
-B/opt/gcc/gcc4.3w/i686-apple-darwin9/bin/
-B/opt/gcc/gcc4.3w/i686-apple-darwin9/lib/ -isystem
/opt/gcc/gcc4.3w/i686-apple-darwin9/include -isystem
/opt/gcc/gcc4.3w/i686-apple-darwin9/sys-include
-I/opt/gcc/gcc-4.3-work/libstdc++-v3/../gcc
-I/opt/gcc/i686-darwin/i686-apple-darwin9/libstdc++-v3/include/i686-apple-darwin9
-I/opt/gcc/i686-darwin/i686-apple-darwin9/libstdc++-v3/include
-I/opt/gcc/gcc-4.3-work/libstdc++-v3/libsupc++  -fno-implicit-templates
-prefer-pic -Wall -Wextra -Wwrite-strings -Wcast-qual -Werror
-fdiagnostics-show-location=once -fvisibility-inlines-hidden
-ffunction-sections -fdata-sections  -O2 -g -g -O2    -c -o eh_call.lo
../../../../gcc-4.3-work/libstdc++-v3/libsupc++/eh_call.cc
libtool: compile:  /opt/gcc/i686-darwin/./gcc/xgcc -shared-libgcc
-B/opt/gcc/i686-darwin/./gcc -nostdinc++
-L/opt/gcc/i686-darwin/i686-apple-darwin9/libstdc++-v3/src
-L/opt/gcc/i686-darwin/i686-apple-darwin9/libstdc++-v3/src/.libs
-B/opt/gcc/gcc4.3w/i686-apple-darwin9/bin/
-B/opt/gcc/gcc4.3w/i686-apple-darwin9/lib/ -isystem
/opt/gcc/gcc4.3w/i686-apple-darwin9/include -isystem
/opt/gcc/gcc4.3w/i686-apple-darwin9/sys-include
-I/opt/gcc/gcc-4.3-work/libstdc++-v3/../gcc
-I/opt/gcc/i686-darwin/i686-apple-darwin9/libstdc++-v3/include/i686-apple-darwin9
-I/opt/gcc/i686-darwin/i686-apple-darwin9/libstdc++-v3/include
-I/opt/gcc/gcc-4.3-work/libstdc++-v3/libsupc++ -fno-implicit-templates -Wall
-Wextra -Wwrite-strings -Wcast-qual -Werror -fdiagnostics-show-location=once
-fvisibility-inlines-hidden -ffunction-sections -fdata-sections -O2 -g -g -O2
-c ../../../../gcc-4.3-work/libstdc++-v3/libsupc++/eh_call.cc  -fno-common
-DPIC -o eh_call.o
cc1plus: warnings being treated as errors
/opt/gcc/gcc-4.3-work/libstdc++-v3/../gcc/unwind-pe.h:74: error: 'unsigned int
size_of_encoded_value(unsigned char)' defined but not used
make[4]: *** [eh_call.lo] Error 1
make[3]: *** [all-recursive] Error 1
make[2]: *** [all] Error 2
make[1]: *** [all-target-libstdc++-v3] Error 2
make: *** [all] Error 2

Does anyone understand why

static unsigned int
size_of_encoded_value (unsigned char encoding)

is read as 'unsigned int size_of_encoded_value(unsigned char)'?


-- 
           Summary: Bootstrapping libstdc++-v3 failed
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dominiq at lps dot ens dot fr
 GCC build triplet: i686-apple-darwin9
  GCC host triplet: i686-apple-darwin9
GCC target triplet: i686-apple-darwin9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2008-01-14 12:11 -------
I Just built "Mon Jan 14 03:46:12 UTC 2008 (revision 131520)" on
i386-apple-darwin8.11.1 .


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|bootstrap                   |target


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2008-01-14 12:13 -------
I do get this warning but the build does not fail:
libtool: compile:  /Users/apinski/src/local/gcc/objdir/./gcc/xgcc
-shared-libgcc -B/Users/apinski/src/local/gcc/objdir/./gcc -nostdinc++
-L/Users/apinski/src/local/gcc/objdir/i386-apple-darwin8.11.1/libstdc++-v3/src
-L/Users/apinski/src/local/gcc/objdir/i386-apple-darwin8.11.1/libstdc++-v3/src/.libs
-B/Users/apinski/local-gcc/i386-apple-darwin8.11.1/bin/
-B/Users/apinski/local-gcc/i386-apple-darwin8.11.1/lib/ -isystem
/Users/apinski/local-gcc/i386-apple-darwin8.11.1/include -isystem
/Users/apinski/local-gcc/i386-apple-darwin8.11.1/sys-include
-I/Users/apinski/src/local/gcc/libstdc++-v3/../gcc
-I/Users/apinski/src/local/gcc/objdir/i386-apple-darwin8.11.1/libstdc++-v3/include/i386-apple-darwin8.11.1
-I/Users/apinski/src/local/gcc/objdir/i386-apple-darwin8.11.1/libstdc++-v3/include
-I/Users/apinski/src/local/gcc/libstdc++-v3/libsupc++ -fno-implicit-templates
-Wall -Wextra -Wwrite-strings -Wcast-qual -fdiagnostics-show-location=once
-fvisibility-inlines-hidden -ffunction-sections -fdata-sections -O2 -g -g -O2
-c /Users/apinski/src/local/gcc/libstdc++-v3/libsupc++/eh_call.cc  -fno-common
-DPIC -o eh_call.o
/Users/apinski/src/local/gcc/libstdc++-v3/../gcc/unwind-pe.h:74: warning:
'unsigned int size_of_encoded_value(unsigned char)' defined but not used


Are you sure you don't have CXXFLAGS set to include -Werror ?


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[dominiq at lps dot ens dot fr]

------- Comment #3 from dominiq at lps dot ens dot fr  2008-01-14 13:30 -------
Subject: Re:  Bootstrapping libstdc++-v3 failed

> Are you sure you don't have CXXFLAGS set to include -Werror ?

I think this is the default and I have it:

cc1plus: warnings being treated as errors

I have seen this kind of failure in the past, but in this case
I am unable to find a work around. Anyway there is something wrong 
somewhere.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[dominiq at lps dot ens dot fr]

------- Comment #4 from dominiq at lps dot ens dot fr  2008-01-14 14:36 -------
Just for the record I have also found the warning in the make log of rev.
129958. The only difference I had with the previous builds was the use of
'--enable-maintainer-mode'. I am now tring with '--enable-maintainer-mode
--disable-werror'.

Now I have checked on the gcc lists that I have been hit couple time by 'cc1:
warnings being treated as errors' (see for instance
http://gcc.gnu.org/ml/fortran/2007-11/msg00254.html). has there been any change
on the cc1plus options recently?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[dominiq at lps dot ens dot fr]

------- Comment #5 from dominiq at lps dot ens dot fr  2008-01-14 15:42 -------
Configuring gcc with:

../gcc-4.3-work/configure --prefix=/opt/gcc/gcc4.3w
--mandir=/opt/gcc/gcc4.3w/share/man --infodir=/opt/gcc/gcc4.3w/share/info
--build=i686-apple-darwin9 --enable-languages=c,c++,fortran,objc,obj-c++,java
--with-gmp=/sw --with-libiconv-prefix=/usr --with-system-zlib
--x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib
--enable-maintainer-mode --disable-werror

I still get the same failure:

cc1plus: warnings being treated as errors
/opt/gcc/gcc-4.3-work/libstdc++-v3/../gcc/unwind-pe.h:74: error: 'unsigned int
size_of_encoded_value(unsigned char)' defined but not used

According the manual:

--enable-werror
--disable-werror
--enable-werror=yes
--enable-werror=no
When you specify this option, it controls whether certain files in the compiler
are built with -Werror in bootstrap stage2 and later. If you don't specify it,
-Werror is turned on for the main development trunk. However it defaults to off
for release branches and final releases. The specific files which get -Werror
are controlled by the Makefiles. 

Why do I have '-Werror' while building libstdc++-v3?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[dominiq at lps dot ens dot fr]

------- Comment #6 from dominiq at lps dot ens dot fr  2008-01-14 16:15 -------
If I go back to my default config:

../gcc-4.3-work/configure --prefix=/opt/gcc/gcc4.3w
--mandir=/opt/gcc/gcc4.3w/share/man --infodir=/opt/gcc/gcc4.3w/share/info
--build=i686-apple-darwin9 --enable-languages=c,c++,fortran,objc,obj-c++,java
--with-gmp=/sw --with-libiconv-prefix=/usr --with-system-zlib
--x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib

the -Werror is no longer there when building libstdc++-v3 and I have been able
to build it, though I stll have the warning about "'unsigned int
size_of_encoded_value(unsigned char)' defined but not used".


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[hunor at cs dot bme dot hu]

------- Comment #7 from hunor at cs dot bme dot hu  2008-02-11 17:50 -------
I got the same error on i686-pc-linux-gnu with revision 132237. The -Werror is
indeed the result of --enable-maintainer-mode:

libstdc++-v3/acinclude.m4:
...
  if test x"$USE_MAINTAINER_MODE" = xno; then
    WERROR=''
  else
    WERROR='-Werror'
  fi
...

libstdc++-v3/fragment.am:
...
WARN_CXXFLAGS = \
        $(WARN_FLAGS) $(WERROR) -fdiagnostics-show-location=once
...

libstdc++-v3/src/Makefile.am:
...
AM_CXXFLAGS = \
        -fno-implicit-templates \
        $(WARN_CXXFLAGS) \
        $(OPTIMIZE_CXXFLAGS) \
        $(CONFIG_CXXFLAGS)
...

libstdc++-v3/libsupc++/Makefile.am:
...
AM_CXXFLAGS = \
        -fno-implicit-templates \
        $(LIBSUPCXX_PICFLAGS) \
        $(WARN_CXXFLAGS) \
        $(OPTIMIZE_CXXFLAGS) \
        $(CONFIG_CXXFLAGS)
...

Otherwise, the warning is correct:
gcc/unwind-pe.h:
...
static unsigned int
size_of_encoded_value (unsigned char encoding)
...

is indeed unused in libstdc++-v3/libsupc++/eh_call.cc. It should be static
inline or __attribute__((unused)), or alternatively
libstdc++-v3/libsupc++/eh_call.cc could define NO_SIZE_OF_ENCODED_VALUE before
including the header.


-- 

hunor at cs dot bme dot hu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hunor at cs dot bme dot hu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[rwild at gcc dot gnu dot org]

------- Comment #8 from rwild at gcc dot gnu dot org  2008-07-06 09:47 -------
Proposed patch at <http://gcc.gnu.org/ml/gcc-patches/2008-07/msg00452.html>


-- 

rwild at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rwild at gcc dot gnu dot org
             Status|WAITING                     |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-07-06 09:47:31
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[rwild at gcc dot gnu dot org]

------- Comment #9 from rwild at gcc dot gnu dot org  2008-07-07 18:16 -------
Subject: Bug 34780

Author: rwild
Date: Mon Jul  7 18:16:04 2008
New Revision: 137582

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=137582
Log:
gcc/
        PR target/34780
        * unwind-pe.h (size_of_encoded_value): add attribute unused.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/unwind-pe.h


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[rwild at gcc dot gnu dot org]

------- Comment #10 from rwild at gcc dot gnu dot org  2008-07-07 18:17 -------
Subject: Bug 34780

Author: rwild
Date: Mon Jul  7 18:17:08 2008
New Revision: 137583

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=137583
Log:
gcc/
        PR target/34780
        * unwind-pe.h (size_of_encoded_value): add attribute unused.

Modified:
    branches/gcc-4_3-branch/gcc/ChangeLog
    branches/gcc-4_3-branch/gcc/unwind-pe.h


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[rwild at gcc dot gnu dot org]

------- Comment #11 from rwild at gcc dot gnu dot org  2008-07-07 18:55 -------
The reported failure is fixed.  However, building with --enable-maintainer-mode
still fails due to this error, already described in
<http://gcc.gnu.org/ml/gcc-patches/2008-07/msg00452.html>:

bin/sh ../libtool --tag CXX --mode=compile /tmp/gcc/build/./gcc/xgcc
-shared-libgcc -B/tmp/gcc/build/./gcc -nostdinc++
-L/tmp/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/src
-L/tmp/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/tmp/gcc-test/x86_64-unknown-linux-gnu/bin/
-B/tmp/gcc-test/x86_64-unknown-linux-gnu/lib/ -isystem
/tmp/gcc-test/x86_64-unknown-linux-gnu/include -isystem
/tmp/gcc-test/x86_64-unknown-linux-gnu/sys-include 
-I/tmp/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu
-I/tmp/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/include
-I/tmp/gcc/gcc/libstdc++-v3/libsupc++  -fno-implicit-templates -Wall -Wextra
-Wwrite-strings -Wcast-qual -Werror -fdiagnostics-show-location=once 
-ffunction-sections -fdata-sections  -g -O2   -D_GNU_SOURCE    -c -o
locale_init.lo ../../../../gcc/libstdc++-v3/src/locale_init.cc
libtool: compile:  /tmp/gcc/build/./gcc/xgcc -shared-libgcc
-B/tmp/gcc/build/./gcc -nostdinc++
-L/tmp/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/src
-L/tmp/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/tmp/gcc-test/x86_64-unknown-linux-gnu/bin/
-B/tmp/gcc-test/x86_64-unknown-linux-gnu/lib/ -isystem
/tmp/gcc-test/x86_64-unknown-linux-gnu/include -isystem
/tmp/gcc-test/x86_64-unknown-linux-gnu/sys-include
-I/tmp/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu
-I/tmp/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/include
-I/tmp/gcc/gcc/libstdc++-v3/libsupc++ -fno-implicit-templates -Wall -Wextra
-Wwrite-strings -Wcast-qual -Werror -fdiagnostics-show-location=once
-ffunction-sections -fdata-sections -g -O2 -D_GNU_SOURCE -c
../../../../gcc/libstdc++-v3/src/locale_init.cc  -fPIC -DPIC -o
.libs/locale_init.o
cc1plus: warnings being treated as errors
../../../../gcc/libstdc++-v3/src/locale_init.cc: In static member function
'static const std::locale& std::locale::classic()':
../../../../gcc/libstdc++-v3/src/locale_init.cc:247: error: dereferencing
type-punned pointer will break strict-aliasing rules
make[2]: *** [locale_init.lo] Error 1
make[2]: Leaving directory
`/tmp/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory
`/tmp/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3'
make: *** [all] Error 2


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[tkoenig at gcc dot gnu dot org]

------- Comment #12 from tkoenig at gcc dot gnu dot org  2008-12-03 23:24 -------
Still fails with today's trunk.

Is this a regression?


-- 

tkoenig at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tkoenig at gcc dot gnu dot
                   |                            |org
      Known to fail|                            |4.4.0
   Last reconfirmed|2008-07-06 09:47:31         |2008-12-03 23:24:07
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[dominiq at lps dot ens dot fr]

------- Comment #13 from dominiq at lps dot ens dot fr  2009-04-12 08:17 -------
Is comment #11 still true?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[Ralf dot Wildenhues at gmx dot de]

------- Comment #14 from Ralf dot Wildenhues at gmx dot de  2009-04-14 21:50 -------
Subject: Re:  Bootstrapping libstdc++-v3 failed

* dominiq at lps dot ens dot fr wrote on Sun, Apr 12, 2009 at 10:17:24AM CEST:
> Is comment #11 still true?

No, I cannot reproduce it any more.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780

[Bug target/34780] Bootstrapping libstdc++-v3 failed

[dominiq at lps dot ens dot fr]

------- Comment #15 from dominiq at lps dot ens dot fr  2009-04-14 22:04 -------
> No, I cannot reproduce it any more.

So I close this PR as fixed. Please reopen if the failure reappears.


-- 

dominiq at lps dot ens dot fr changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34780