------- Comment #1 from rguenth at gcc dot gnu dot org 2008-03-12 10:19 -------
It's by no means a "simple" program ;)
the failure mode is that
Program received signal SIGSEGV, Segmentation fault.
0x0000000000400bed in basic::compare (this=0x603040, [EMAIL PROTECTED]) at
t.C:98
98 return compare_same_type(other);
(gdb) print other
$1 = (const basic &) @0x603010: {<refcounted> = {refcount = 1},
_vptr.basic = 0x401430, static tinfo_static = {<No data fields>},
tinfo_key = 0x401365, flags = 3}
(gdb) print *this
$3 = {<refcounted> = {refcount = 0}, _vptr.basic = 0x0,
static tinfo_static = {<No data fields>}, tinfo_key = 0x401365, flags = 3}
the object compare is invoked on is not properly initialized (its _vptr is
NULL).
(gdb) bt
#0 0x0000000000400bed in basic::compare (this=0x603040, [EMAIL PROTECTED])
at t.C:98
#1 0x0000000000400f41 in ex::compare (this=0x7fff106c4510,
[EMAIL PROTECTED]) at t.C:165
#2 0x00000000004009a8 in main (argc=1, argv=0x7fff106c4628) at t.C:213
For whatever reason (program non-conformance or GCC bug).
Please try to simplify the test program.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35548
