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horrible 4.8.2 testsuite results Debian wheezy and powerpc64-unknown-linux-gnu


Not sure where to begin. However I was surprised to see many thousands of
testsuite failures with 2.8.2 on the following system : 

vanth $ uname -a 
Linux vanth 3.2.0-4-powerpc64 #1 SMP Debian 3.2.51-1 ppc64 GNU/Linux
vanth $ cat /proc/cpuinfo 
processor : 0
cpu : PPC970MP, altivec supported
clock : 2500.000000MHz
revision : 1.1 (pvr 0044 0101)

processor : 1
cpu : PPC970MP, altivec supported
clock : 2500.000000MHz
revision : 1.1 (pvr 0044 0101)

processor : 2
cpu : PPC970MP, altivec supported
clock : 2500.000000MHz
revision : 1.1 (pvr 0044 0101)

processor : 3
cpu : PPC970MP, altivec supported
clock : 2500.000000MHz
revision : 1.1 (pvr 0044 0101)

timebase : 33333333
platform : PowerMac
model : PowerMac11,2
machine : PowerMac11,2
motherboard : PowerMac11,2 MacRISC4 Power Macintosh 
detected as : 337 (PowerMac G5 Dual Core)
pmac flags : 00000000
L2 cache : 1024K unified
pmac-generation : NewWorld
vanth $

The build environment is similar to what I used on Red Hat Entrprise Linux on x86_64
as well as on Debian Linux wheezy on x86_64 where I was able to get good results. 

Configure looked like so : 

vanth $ ../gcc-4.8.2/configure --prefix=/usr/local/gcc4 --with-gnu-as \
> --with-gnu-ld --with-ld=/usr/bin/ld --with-libiconv-prefix=/usr/local \
> --enable-nls --enable-lto --enable-threads=posix --enable-shared \
> --libdir=/usr/local/gcc4/lib --libexecdir=/usr/local/gcc4/lib \
> --enable-languages=c,c++,objc,fortran,java,lto,go,ada \
> --enable-__cxa_atexit --with-as=/usr/bin/as --enable-bootstrap
checking build system type... powerpc64-unknown-linux-gnu
checking host system type... powerpc64-unknown-linux-gnu
checking target system type... powerpc64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether ln works... yes
checking whether ln -s works... yes
checking for a sed that does not truncate output... /usr/local/bin/sed
checking for gawk... /usr/local/bin/gawk
checking for libatomic support... yes
checking for libitm support... yes
checking for libsanitizer support... yes
checking for gcc... /usr/local/gcc4/bin/gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether /usr/local/gcc4/bin/gcc accepts -g... yes
checking for /usr/local/gcc4/bin/gcc option to accept ISO C89... none needed
checking whether we are using the GNU C++ compiler... yes
checking whether /usr/local/gcc4/bin/g++ accepts -g... yes
checking whether g++ accepts -static-libstdc++ -static-libgcc... yes
checking for gnatbind... gnatbind
checking for gnatmake... gnatmake
checking whether compiler driver understands Ada... yes
checking how to compare bootstrapped objects... cmp --ignore-initial=16 $$f1 $$f2
checking for objdir... .libs
checking for version 0.10 of ISL... no
checking for version 0.11 of ISL... no
checking for version 0.12 of ISL... no
 'c++' language required by 'go' in stage 1; enabling
The following languages will be built: c,ada,c++,fortran,go,java,lto,objc
checking for default BUILD_CONFIG... bootstrap-debug
checking for bison... bison -y
checking for bison... bison
checking for gm4... /usr/local/bin/gm4
checking for flex... no
checking for lex... no
checking for flex... no
checking for makeinfo... makeinfo
checking for expect... expect
checking for runtest... runtest
checking for ar... ar
checking for as... as
checking for dlltool... no
checking for ld... (cached) /usr/bin/ld
checking for lipo... no
checking for nm... nm
checking for ranlib... ranlib
checking for strip... strip
checking for windres... no
checking for windmc... no
checking for objcopy... objcopy
checking for objdump... objdump
checking for readelf... readelf
checking for cc... cc
checking for c++... c++
checking for gcc... gcc
checking for gcj... gcj
checking for gfortran... gfortran
checking for gccgo... gccgo
checking for ar... no
checking for ar... ar
checking for as... no
checking for as... as
checking for dlltool... no
checking for dlltool... no
checking for ld... no
checking for ld... ld
checking for lipo... no
checking for lipo... no
checking for nm... no
checking for nm... nm
checking for objdump... no
checking for objdump... objdump
checking for ranlib... no
checking for ranlib... ranlib
checking for readelf... no
checking for readelf... readelf
checking for strip... no
checking for strip... strip
checking for windres... no
checking for windres... no
checking for windmc... no
checking for windmc... no
checking where to find the target ar... host tool
checking where to find the target as... host tool
checking where to find the target cc... just compiled
checking where to find the target c++... just compiled
checking where to find the target c++ for libstdc++... just compiled
checking where to find the target dlltool... host tool
checking where to find the target gcc... just compiled
checking where to find the target gcj... just compiled
checking where to find the target gfortran... just compiled
checking where to find the target gccgo... just compiled
checking where to find the target ld... host tool
checking where to find the target lipo... host tool
checking where to find the target nm... host tool
checking where to find the target objdump... host tool
checking where to find the target ranlib... host tool
checking where to find the target readelf... host tool
checking where to find the target strip... host tool
checking where to find the target windres... host tool
checking where to find the target windmc... host tool
checking whether to enable maintainer-specific portions of Makefiles... no
configure: creating ./config.status
config.status: creating Makefile

I am seeing many many thousands of testsuite failures like so : 



 === g++ tests ===


Running target unix
FAIL: c-c++-common/asan/clone-test-1.c -O2 -flto -flto-partition=none (test for excess errors)
UNRESOLVED: c-c++-common/asan/clone-test-1.c -O2 -flto -flto-partition=none compilation failed to produce executable
FAIL: c-c++-common/asan/clone-test-1.c -O2 -flto (test for excess errors)
UNRESOLVED: c-c++-common/asan/clone-test-1.c -O2 -flto compilation failed to produce executable
FAIL: c-c++-common/asan/global-overflow-1.c -O0 output pattern test, is ==========================================================
=======
FAIL: c-c++-common/asan/global-overflow-1.c -O1 output pattern test, is ==========================================================
=======
FAIL: c-c++-common/asan/global-overflow-1.c -O2 output pattern test, is ==========================================================
=======
FAIL: c-c++-common/asan/global-overflow-1.c -O3 -fomit-frame-pointer output pattern test, is =====================================
============================
FAIL: c-c++-common/asan/global-overflow-1.c -O3 -g output pattern test, is =======================================================
==========
FAIL: c-c++-common/asan/global-overflow-1.c -Os output pattern test, is ==========================================================
=======
FAIL: c-c++-common/asan/global-overflow-1.c -O2 -flto -flto-partition=none (test for excess errors)
UNRESOLVED: c-c++-common/asan/global-overflow-1.c -O2 -flto -flto-partition=none compilation failed to produce executable
FAIL: c-c++-common/asan/global-overflow-1.c -O2 -flto (test for excess errors)
UNRESOLVED: c-c++-common/asan/global-overflow-1.c -O2 -flto compilation failed to produce executable
FAIL: c-c++-common/asan/heap-overflow-1.c -O0 output pattern test, is ============================================================
=====
FAIL: c-c++-common/asan/heap-overflow-1.c -O1 output pattern test, is ============================================================
=====
FAIL: c-c++-common/asan/heap-overflow-1.c -O2 output pattern test, is ============================================================
=====
FAIL: c-c++-common/asan/heap-overflow-1.c -O3 -fomit-frame-pointer output pattern test, is =======================================
==========================
FAIL: c-c++-common/asan/heap-overflow-1.c -O3 -g output pattern test, is =========================================================
========
FAIL: c-c++-common/asan/heap-overflow-1.c -Os output pattern test, is ============================================================
=====
FAIL: c-c++-common/asan/heap-overflow-1.c -O2 -flto -flto-partition=none (test for excess errors)
UNRESOLVED: c-c++-common/asan/heap-overflow-1.c -O2 -flto -flto-partition=none compilation failed to produce executable
FAIL: c-c++-common/asan/heap-overflow-1.c -O2 -flto (test for excess errors)
UNRESOLVED: c-c++-common/asan/heap-overflow-1.c -O2 -flto compilation failed to produce executable


etc etc 

FAIL: g++.dg/torture/stackalign/throw-3.C -O2 -flto -flto-partition=none -fpic (test for excess errors)
UNRESOLVED: g++.dg/torture/stackalign/throw-3.C -O2 -flto -flto-partition=none -fpic compilation failed to produce executable
FAIL: g++.dg/torture/stackalign/throw-3.C -O2 -flto (test for excess errors)
UNRESOLVED: g++.dg/torture/stackalign/throw-3.C -O2 -flto compilation failed to produce executable
FAIL: g++.dg/torture/stackalign/throw-3.C -O2 -flto -fpic (test for excess errors)
UNRESOLVED: g++.dg/torture/stackalign/throw-3.C -O2 -flto -fpic compilation failed to produce executable
FAIL: g++.dg/torture/stackalign/throw-4.C -O2 -flto -flto-partition=none (test for excess errors)
UNRESOLVED: g++.dg/torture/stackalign/throw-4.C -O2 -flto -flto-partition=none compilation failed to produce executable
FAIL: g++.dg/torture/stackalign/throw-4.C -O2 -flto -flto-partition=none -fpic (test for excess errors)
UNRESOLVED: g++.dg/torture/stackalign/throw-4.C -O2 -flto -flto-partition=none -fpic compilation failed to produce executable
FAIL: g++.dg/torture/stackalign/throw-4.C -O2 -flto (test for excess errors)
UNRESOLVED: g++.dg/torture/stackalign/throw-4.C -O2 -flto compilation failed to produce executable
FAIL: g++.dg/torture/stackalign/throw-4.C -O2 -flto -fpic (test for excess errors)
UNRESOLVED: g++.dg/torture/stackalign/throw-4.C -O2 -flto -fpic compilation failed to produce executable

 === g++ Summary ===

# of expected passes 51754
# of unexpected failures 599
# of expected failures 290
# of unresolved testcases 521
# of unsupported tests 1032
/usr/local/build/gcc-4.8.2_3.2.0-4-powerpc64_unknown_003/gcc/testsuite/g++/../../xg++ version 4.8.2 (Blastwave.org Inc. Tue Oct 29 21:50:30 UTC 2013)


also with thousands of lines like : 




 === gcc tests ===


Running target unix
FAIL: gcc.c-torture/execute/builtins/20010124-1.c compilation, -O2 -flto -flto-partition=none
UNRESOLVED: gcc.c-torture/execute/builtins/20010124-1.c execution, -O2 -flto -flto-partition=none
FAIL: gcc.c-torture/execute/builtins/20010124-1.c compilation, -O2 -flto
UNRESOLVED: gcc.c-torture/execute/builtins/20010124-1.c execution, -O2 -flto
FAIL: gcc.c-torture/execute/builtins/abs-1.c compilation, -O2 -flto -flto-partition=none
UNRESOLVED: gcc.c-torture/execute/builtins/abs-1.c execution, -O2 -flto -flto-partition=none
FAIL: gcc.c-torture/execute/builtins/abs-1.c compilation, -O2 -flto
UNRESOLVED: gcc.c-torture/execute/builtins/abs-1.c execution, -O2 -flto
FAIL: gcc.c-torture/execute/builtins/abs-2.c compilation, -O2 -flto -flto-partition=none
UNRESOLVED: gcc.c-torture/execute/builtins/abs-2.c execution, -O2 -flto -flto-partition=none
FAIL: gcc.c-torture/execute/builtins/abs-2.c compilation, -O2 -flto
UNRESOLVED: gcc.c-torture/execute/builtins/abs-2.c execution, -O2 -flto
FAIL: gcc.c-torture/execute/builtins/abs-3.c compilation, -O2 -flto -flto-partition=none
UNRESOLVED: gcc.c-torture/execute/builtins/abs-3.c execution, -O2 -flto -flto-partition=none
FAIL: gcc.c-torture/execute/builtins/abs-3.c compilation, -O2 -flto
UNRESOLVED: gcc.c-torture/execute/builtins/abs-3.c execution, -O2 -flto
FAIL: gcc.c-torture/execute/builtins/complex-1.c compilation, -O2 -flto -flto-partition=none
UNRESOLVED: gcc.c-torture/execute/builtins/complex-1.c execution, -O2 -flto -flto-partition=none
FAIL: gcc.c-torture/execute/builtins/complex-1.c compilation, -O2 -flto
UNRESOLVED: gcc.c-torture/execute/builtins/complex-1.c execution, -O2 -flto
.
.
.
FAIL: gcc.dg/vmx/yousufi-1.c -O2 -flto (test for excess errors)
UNRESOLVED: gcc.dg/vmx/yousufi-1.c -O2 -flto compilation failed to produce executable
FAIL: gcc.dg/vmx/zero-1.c -O2 -flto -flto-partition=none (test for excess errors)
UNRESOLVED: gcc.dg/vmx/zero-1.c -O2 -flto -flto-partition=none compilation failed to produce executable
FAIL: gcc.dg/vmx/zero-1.c -O2 -flto (test for excess errors)
UNRESOLVED: gcc.dg/vmx/zero-1.c -O2 -flto compilation failed to produce executable
FAIL: gcc.dg/vmx/zero.c -O2 -flto -flto-partition=none (test for excess errors)
UNRESOLVED: gcc.dg/vmx/zero.c -O2 -flto -flto-partition=none compilation failed to produce executable
FAIL: gcc.dg/vmx/zero.c -O2 -flto (test for excess errors)
UNRESOLVED: gcc.dg/vmx/zero.c -O2 -flto compilation failed to produce executable
FAIL: gcc.target/powerpc/ppc-fpconv-9.c scan-assembler-not stw
FAIL: gcc.target/powerpc/ppc-round.c scan-assembler-not stw
FAIL: gcc.target/powerpc/ppc-vector-memcpy.c scan-assembler lvx
FAIL: gcc.target/powerpc/pr48857.c scan-assembler-not stw

 === gcc Summary ===

# of expected passes 80570
# of unexpected failures 4369
# of expected failures 240
# of unresolved testcases 4207
# of unsupported tests 1442
/usr/local/build/gcc-4.8.2_3.2.0-4-powerpc64_unknown_003/gcc/xgcc version 4.8.2 (Blastwave.org Inc. Tue Oct 29 21:50:30 UTC 2013)


Truely the worst results I have seen in years. 

This would indicate that there is a serious issue somewhere but not sure if
there is something obvious at work here? 


Any hints?


Dennis 

ps: I used the Debian supplied gcc to bootstrap with : 

vanth $ which gcc
/usr/bin/gcc
vanth $ gcc --version 
gcc (Debian 4.6.3-14) 4.6.3
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


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