Re: GCC 3.2 Prerelease

["H. J. Lu" <hjl at lucon dot org>]

On Tue, Aug 06, 2002 at 11:37:00AM -0700, Joe Buck wrote:
> 
> FAIL: 22_locale/ctype_narrow_wchar_t.cc execution test

I got

Program received signal SIGSEGV, Segmentation fault.
0x4018940f in __wmemcpy (s1=0x40227048, s2=0xeff69520, n=100894740)
    at wmemcpy.c:30
30        return (wchar_t *) memcpy ((char *) s1, (char *) s2, n * sizeof
(wchar_t));
(gdb) bt
#0  0x4018940f in __wmemcpy (s1=0x40227048, s2=0xeff69520, n=100894740)
    at wmemcpy.c:30
#1  0x4009f761 in std::basic_string<wchar_t, std::char_traits<wchar_t>,
std::all
ocator<wchar_t> >::_M_mutate(unsigned, unsigned, unsigned) (this=0xbffff690, 
    __pos=7, __len1=3221222784, __len2=6)
    at
/export/build/gnu/gcc/build-i686-rearden-linux/i686-pc-linux-gnu/libstdc+
+-v3/include/bits/char_traits.h:220
#2  0x400a389a in std::basic_string<wchar_t, std::char_traits<wchar_t>,
std::all
ocator<wchar_t> >& std::basic_string<wchar_t, std::char_traits<wchar_t>,
std::al
locator<wchar_t> >::_M_replace_safe<wchar_t
const*>(__gnu_cxx::__normal_iterator
<wchar_t*, std::basic_string<wchar_t, std::char_traits<wchar_t>,
std::allocator<
wchar_t> > >, __gnu_cxx::__normal_iterator<wchar_t*, std::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > >, wchar_t const*,
__gnu_cx
x::__normal_iterator<wchar_t*, std::basic_string<wchar_t,
std::char_traits<wchar
_t>, std::allocator<wchar_t> > >) (this=0xbffff690, __k1=0x80498c4, 
    __k2=0x80498dc)
    at
/export/build/gnu/gcc/build-i686-rearden-linux/i686-pc-linux-gnu/libstdc+
+-v3/include/bits/basic_string.tcc:533
#3  0x400a10e7 in std::basic_string<wchar_t, std::char_traits<wchar_t>,
std::all
ocator<wchar_t> >::append(wchar_t const*, unsigned) (this=0x7, __s=0x80498c4, 
    __n=6)
    at
/export/build/gnu/gcc/build-i686-rearden-linux/i686-pc-linux-gnu/libstdc+
+-v3/include/bits/basic_string.tcc:596
#4  0x400a0e65 in std::basic_string<wchar_t, std::char_traits<wchar_t>,
std::all
ocator<wchar_t> >::operator+=(wchar_t const*) (this=0x6038814, __s=0x6)
    at
/export/build/gnu/gcc/build-i686-rearden-linux/i686-pc-linux-gnu/libstdc+
+-v3/include/bits/char_traits.h:208
#5  0x08049085 in test02() ()
    at
/home/hjl/work/gnu/src/gcc-3.2/gcc/libstdc++-v3/testsuite/22_locale/ctype
_narrow_wchar_t.cc:79
#6  0x08049376 in main ()
    at
/home/hjl/work/gnu/src/gcc-3.2/gcc/libstdc++-v3/testsuite/22_locale/ctype
_narrow_wchar_t.cc:104
#7  0x40124b88 in __libc_start_main (main=0x804935c <main>, argc=1, 
---Type <return> to continue, or q <return> to quit---
    ubp_av=0xbffff754, init=0x804894c <_init>, fini=0x8049790 <_fini>, 
    rtld_fini=0x4000ba94 <_dl_fini>, stack_end=0xbffff74c)
    at ../sysdeps/generic/libc-start.c:129
(gdb) p s1
$1 = (wchar_t *) 0x40227048
(gdb) p *s1
$2 = 0
(gdb) p s2
$3 = (wchar_t *) 0xeff69520
(gdb) p *s2
Cannot access memory at address 0xeff69520

It may be a compiler/library bug.

H.J.