[bug] gcc-3.4-20050422 compiling glibc-2.3.5 internal compiler error in libm-test.c:ctanh_test()

[Clemens Koller]

...and it's not reproducable yet.
On a second try the compile was fine and test-idouble just works...

~/newbuild/glibc-2.3.5-build/math$ ./test-idouble
testing double (inline functions)

Test suite completed:
   2562 test cases plus 2337 tests for exception flags executed.
   All tests passed successfully.

Uargh... great, isn't it?
Okay, I will continue the glibc tests to check my other nptl issues.
And hopefully, I can get this error isolated next time.

Best greets,

Clemens Koller

Clemens Koller wrote:
> Hi
> 
> Well, I 've just tried to compile the new glibc-2.3.5 with the latest
> gcc-3.4-20050422 and ran into the following internal compiler error during
> the glibc math checks:
> 
> make[2]: Entering directory `/share/home/clemens/newbuild/glibc-2.3.5/math'
> gcc test-idouble.c -c -std=gnu99 -O2 -Wall -Winline -Wstrict-prototypes 
> -Wwrite-strings -g -msoft-float -mnew-mnemonics     -Wno-uninitialized 
> -D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES -DNO_LONG_DOUBLE 
> -D_Mlong_double_=double -I../include -I. 
> -I/home/clemens/newbuild/glibc-2.3.5-build/math -I.. -I../libio 
> -I../nptl -I/home/clemens/newbuild/glibc-2.3.5-build 
> -I../sysdeps/powerpc/powerpc32/elf -I../sysdeps/powerpc/elf 
> -I../libidn/sysdeps/unix 
> -I../nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32 
> -I../nptl/sysdeps/unix/sysv/linux/powerpc 
> -I../nptl/sysdeps/unix/sysv/linux -I../nptl/sysdeps/pthread 
> -I../sysdeps/pthread -I../nptl/sysdeps/unix/sysv -I../nptl/sysdeps/unix 
> -I../nptl/sysdeps/powerpc -I../sysdeps/unix/sysv/linux/powerpc/powerpc32 
> -I../sysdeps/unix/sysv/linux/powerpc -I../sysdeps/unix/sysv/linux 
> -I../sysdeps/gnu -I../sysdeps/unix/common -I../sysdeps/unix/mman 
> -I../sysdeps/unix/inet -I../sysdeps/unix/sysv -I../sysdeps/unix/powerpc 
> -I../sysdeps/unix -I../sysdeps/po
> six -I../sysdeps/powerpc/powerpc32 -I../sysdeps/wordsize-32 
> -I../sysdeps/powerpc/soft-fp -I../sysdeps/powerpc/nofpu 
> -I../sysdeps/powerpc -I../sysdeps/ieee754/flt-32 
> -I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754 
> -I../sysdeps/generic/elf -I../sysdeps/generic -I 
> /lib/modules/2.6.11.6/build/include -D_LIBC_REENTRANT -D_LIBC_REENTRANT 
> -include ../include/libc-symbols.h   -DNOT_IN_libc=1 
> -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ -DTEST_FAST_MATH 
> -fno-builtin   -I../soft-fp/ -o 
> /home/clemens/newbuild/glibc-2.3.5-build/math/test-idouble.o -MD -MP -MF 
> /home/clemens/newbuild/glibc-2.3.5-build/math/test-idouble.o.dt -MT 
> /home/clemens/newbuild/glibc-2.3.5-build/math/test-idouble.o
> /home/clemens/newbuild/glibc-2.3.5-build/math/libm-test.c: In function 
> `ctanh_test':
> /home/clemens/newbuild/glibc-2.3.5-build/math/libm-test.c:2333: internal 
> compiler error: Segmentation fault
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://gcc.gnu.org/bugs.html> for instructions.
> make[2]: *** 
> [/home/clemens/newbuild/glibc-2.3.5-build/math/test-idouble.o] Error 1
> make[2]: Leaving directory `/share/home/clemens/newbuild/glibc-2.3.5/math'
> make[1]: *** [math/tests] Error 2
> make[1]: Leaving directory `/share/home/clemens/newbuild/glibc-2.3.5'
> make: *** [check] Error 2
> 
> gcc was built with:
> Reading specs from /usr/local/lib/gcc/powerpc-unknown-linux-gnu/3.4.4/specs
> Configured with: ../gcc-3.4-20050422/configure --with-float=soft 
> --enable-shared --enable-threads=posix --enable-__cxa_atexit 
> --enable-languages=c,c++,objc --enable-nls=yes --enable-clocale=gnu
> Thread model: posix
> gcc version 3.4.4 20050422 (prerelease)
> 
> all that is on a:
> $ cat /proc/cpuinfo
> processor       : 0
> cpu             : e500
> revision        : 2.0 (pvr 8020 0020)
> bogomips        : 823.29
> Vendor          : MicroSys Electronics GmbH
> Machine         : PM854
> clock           : 825MHz
> PVR             : 0x80200020
> SVR             : 0x80300020
> PLL setting     : 0x5
> Memory          : 256 MB
> 
> which is a PowerPC e500 MPC8540 which has no FPU system running:
> $ uname -a
> Linux ecam.anagramm.de 2.6.11.6 #1 Mon Apr 4 15:31:11 CEST 2005 ppc ppc 
> ppc GNU/Linux
> $ ld --version
> GNU ld version 2.16.90.0.1 20050408
> ...
> 
> I know that there are precision issues with the test-float and 
> test-ifloat tests
> with the FPU emulation code, but this crash is new to me.
> I haven't seen this problem with gcc-3.4.3 and glibc-2.3.4.
> Well... is this already a known problem, a mistake I made,
> or do you need more debugging info?
> 
> 
> Best greets,
> 
> Clemens Koller
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