http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54090
Uros Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-07-25
Ever Confirmed|0 |1
--- Comment #2 from Uros Bizjak <ubizjak at gmail dot com> 2012-07-25 18:56:57
UTC ---
Confirmed on x86_64-unknown-linux-gnu, with:
gcc version 4.8.0 20120725 (experimental) [trunk revision 189856] (GCC)
(gdb) bt
#0 internal_error (gmsgid=gmsgid@entry=0x121e5ba "in %s, at %s:%d") at
../../gcc-svn/trunk/gcc/diagnostic.c:951
#1 0x0000000000ef24b4 in fancy_abort (file=<optimized out>, line=16640,
function=0xf4b6e1 "unify")
at ../../gcc-svn/trunk/gcc/diagnostic.c:1011
#2 0x0000000000584614 in unify (tparms=tparms@entry=0x7ffff1b08f78,
targs=targs@entry=0x7ffff1b26480, parm=0x7ffff19ad140,
arg=0x7ffff19ae9f0, strict=strict@entry=0, explain_p=explain_p@entry=false)
at ../../gcc-svn/trunk/gcc/cp/pt.c:16640
#3 0x00000000005869d4 in unify (tparms=tparms@entry=0x7ffff1b08f78,
targs=targs@entry=0x7ffff1b26480, parm=0x7ffff1b21118,
arg=0x7ffff1b210a8, strict=<optimized out>, strict@entry=0,
explain_p=explain_p@entry=false)
at ../../gcc-svn/trunk/gcc/cp/pt.c:16474
#4 0x0000000000593126 in get_class_bindings (tparms=0x7ffff1b08f78,
spec_args=0x7ffff19aec30, args=0x7ffff19aeab0)
at ../../gcc-svn/trunk/gcc/cp/pt.c:17209
#5 0x0000000000593540 in more_specialized_class
(pat1=pat1@entry=0x7ffff1b24938, pat2=pat2@entry=0x7ffff1b24898)
at ../../gcc-svn/trunk/gcc/cp/pt.c:17070
#6 0x0000000000593eb3 in most_specialized_class
(type=type@entry=0x7ffff1b20c78, tmpl=tmpl@entry=0x7ffff1b0ccf0,
complain=complain@entry=3) at ../../gcc-svn/trunk/gcc/cp/pt.c:17474
#7 0x000000000059df3d in instantiate_class_template_1 (type=0x7ffff1b20c78) at
../../gcc-svn/trunk/gcc/cp/pt.c:8401
#8 instantiate_class_template (type=<optimized out>) at
../../gcc-svn/trunk/gcc/cp/pt.c:8905
(gdb) f 2
#2 0x0000000000584614 in unify (tparms=tparms@entry=0x7ffff1b08f78,
targs=targs@entry=0x7ffff1b26480, parm=0x7ffff19ad140,
arg=0x7ffff19ae9f0, strict=strict@entry=0, explain_p=explain_p@entry=false)
at ../../gcc-svn/trunk/gcc/cp/pt.c:16640
16640 gcc_unreachable ();
(gdb) li
16635 case VAR_DECL:
16636 /* A non-type template parameter that is a variable should be a
16637 an integral constant, in which case, it whould have been
16638 folded into its (constant) value. So we should not be getting
16639 a variable here. */
16640 gcc_unreachable ();
16641
16642 case TYPE_ARGUMENT_PACK:
16643 case NONTYPE_ARGUMENT_PACK:
16644 return unify (tparms, targs, ARGUMENT_PACK_ARGS (parm),
