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From: Wolfgang Bangerth <bangerth@ices.utexas.edu> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: Re: c++/9452: [2003-05-03] ICE (segfault) using a dependent expression as argument for the template-id in the return type Date: Fri, 16 May 2003 20:06:00 -0000 [thread overview] Message-ID: <20030516200601.3271.qmail@sources.redhat.com> (raw) The following reply was made to PR c++/9452; it has been noted by GNATS. From: Wolfgang Bangerth <bangerth@ices.utexas.edu> To: Giovanni Bajo <giovannibajo@libero.it> Cc: gcc-bugs@gcc.gnu.org, <gcc-gnats@gcc.gnu.org>, Gabriel Dos Reis <gdr@integrable-solutions.net> Subject: Re: c++/9452: [2003-05-03] ICE (segfault) using a dependent expression as argument for the template-id in the return type Date: Fri, 16 May 2003 15:02:12 -0500 (CDT) > http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9452 > > I think the segfault happens while trying to format the error message. No, that's not the case. The error happens here (this is present mainline): #0 convert_from_reference (val=0x40159528) at ../../gcc-3.4-CVS/gcc/cp/cvt.c:557 #1 0x08052c35 in prep_operand (operand=0x40159528) at ../../gcc-3.4-CVS/gcc/cp/call.c:3561 #2 0x08052f79 in build_new_op (code=MINUS_EXPR, flags=3, arg1=0x40159528, arg2=0x401a0f28, arg3=0x0) at ../../gcc-3.4-CVS/gcc/cp/call.c:3662 #3 0x081143f6 in build_x_binary_op (code=MINUS_EXPR, arg1=0x40159528, arg2=0x0) at ../../gcc-3.4-CVS/gcc/cp/typeck.c:2947 #4 0x0809e635 in tsubst_template_arg_vector (t=0x401a0f50, args=0x40159510, complain=tf_none) at ../../gcc-3.4-CVS/gcc/cp/pt.c:5676 #5 0x0809ed80 in tsubst_aggr_type (t=0x401aabd0, args=0x40159510, complain=tf_none, in_decl=0x0, entering_scope=0) at ../../gcc-3.4-CVS/gcc/cp/pt.c:5794 #6 0x080a2d7c in tsubst (t=0x401aac3c, args=0x40159510, complain=tf_none, in_decl=0x0) at ../../gcc-3.4-CVS/gcc/cp/pt.c:6578 #7 0x080a1f34 in tsubst_function_type (t=0x401aac3c, args=0x40159510, complain=tf_none, in_decl=0x401aabd0) at ../../gcc-3.4-CVS/gcc/cp/pt.c:6445 #8 0x080a30e8 in tsubst (t=0x401ad000, args=0x40159510, complain=tf_none, in_decl=0x0) at ../../gcc-3.4-CVS/gcc/cp/pt.c:6960 #9 0x080aedbd in fn_type_unification (fn=0x401ad0d8, explicit_targs=0x0, targs=0x401ad000, args=0x401ac7bc, return_type=0x0, strict=DEDUCE_CALL, len=-1) at ../../gcc-3.4-CVS/gcc/cp/pt.c:8649 The place in convert_reference is this: tree convert_from_reference (tree val) { tree type = TREE_TYPE (val); if (TREE_CODE (type) == OFFSET_TYPE) -------- here type = TREE_TYPE (type); if (TREE_CODE (type) == REFERENCE_TYPE) return build_indirect_ref (val, NULL); return val; } and the reason is that type==0x0. Now, as to why that is happening... W. ------------------------------------------------------------------------- Wolfgang Bangerth email: bangerth@ices.utexas.edu www: http://www.ices.utexas.edu/~bangerth/
next reply other threads:[~2003-05-16 20:06 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-05-16 20:06 Wolfgang Bangerth [this message] -- strict thread matches above, loose matches on Subject: below -- 2003-05-16 17:26 Giovanni Bajo
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