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Re: c++/5247: [2003-01-22]ICE on default parameter in constructorwhich is reference to class
- From: Wolfgang Bangerth <bangerth at ices dot utexas dot edu>
- To: Giovanni Bajo <giovannibajo at libero dot it>
- Cc: gcc-gnats at gcc dot gnu dot org, <gcc-bugs at gcc dot gnu dot org>, <schmid at snake dot iap dot physik dot tu-darmstadt dot de>
- Date: Tue, 1 Apr 2003 20:21:26 -0600 (CST)
- Subject: Re: c++/5247: [2003-01-22]ICE on default parameter in constructorwhich is reference to class
> The testcase compiles on my 2.95:
>
> $ g++-2 -v
> Reading specs from /usr/lib/gcc-lib/i686-pc-cygwin/2.95.3-10/specs
> gcc version 2.95.3-10 (cygwin special)
>
> Can somebody double-check?
It gets into an infinite memory eating loop for me with 2.95.3 20010315 (SuSE).
However, here's some more fodder for bug fixers: with 3.4, the loop is
these functions, apparently calling each other in infinite ways (I just
killed cc1plus at an arbitrary point, so your stack trace will look
differently; at this time, gdb showed me the first ~9000 stack frames,
before I had to kill it...)
#0 0x08138b87 in break_out_target_exprs (t=0x4015dae0)
at cp/tree.c:1509
#1 0x080548b7 in convert_default_arg (type=0x40199288, arg=0x0,
fn=0x40199dec, parmnum=1) at cp/call.c:4416
#2 0x08054eaf in build_over_call (cand=0x446bf70c, flags=3)
at cp/call.c:4577
#3 0x0805416d in convert_like_real (convs=0x40199dec, expr=0x4015dae0,
fn=0x0, argnum=0, inner=-1) at cp/call.c:4149
#4 0x08053dca in convert_like_real (convs=0x446c1654, expr=0x4015dae0,
fn=0x0, argnum=0, inner=0) at cp/call.c:4220
#5 0x0805a321 in initialize_reference (type=0x40199288, expr=0x4015dae0,
decl=0x0) at cp/call.c:6132
#6 0x08113f48 in convert_for_initialization (exp=0x40199288, type=0x0,
rhs=0x4015dae0, flags=3, errtype=0x84a0e78 "default argument",
fndecl=0x40199dec, parmnum=1) at cp/typeck.c:6202
#7 0x080548fc in convert_default_arg (type=0x40199288, arg=0x0,
fn=0x40199dec, parmnum=1) at cp/call.c:4430
#8 0x08054eaf in build_over_call (cand=0x446bf6b4, flags=3)
at cp/call.c:4577
#9 0x0805416d in convert_like_real (convs=0x40199dec, expr=0x4015dae0,
fn=0x0, argnum=0, inner=-1) at cp/call.c:4149
#10 0x08053dca in convert_like_real (convs=0x446c1528, expr=0x4015dae0,
fn=0x0, argnum=0, inner=0) at cp/call.c:4220
#11 0x0805a321 in initialize_reference (type=0x40199288, expr=0x4015dae0,
decl=0x0) at cp/call.c:6132
#12 0x08113f48 in convert_for_initialization (exp=0x40199288, type=0x0,
rhs=0x4015dae0, flags=3, errtype=0x84a0e78 "default argument",
fndecl=0x40199dec, parmnum=1) at cp/typeck.c:6202
#13 0x080548fc in convert_default_arg (type=0x40199288, arg=0x0,
fn=0x40199dec, parmnum=1) at cp/call.c:4430
#14 0x08054eaf in build_over_call (cand=0x446bf65c, flags=3)
at cp/call.c:4577
#15 0x0805416d in convert_like_real (convs=0x40199dec, expr=0x4015dae0,
fn=0x0, argnum=0, inner=-1) at cp/call.c:4149
#16 0x08053dca in convert_like_real (convs=0x446c13fc, expr=0x4015dae0,
fn=0x0, argnum=0, inner=0) at cp/call.c:4220
#17 0x0805a321 in initialize_reference (type=0x40199288, expr=0x4015dae0,
decl=0x0) at cp/call.c:6132
#18 0x08113f48 in convert_for_initialization (exp=0x40199288, type=0x0,
rhs=0x4015dae0, flags=3, errtype=0x84a0e78 "default argument",
fndecl=0x40199dec, parmnum=1) at cp/typeck.c:6202
#19 0x080548fc in convert_default_arg (type=0x40199288, arg=0x0,
fn=0x40199dec, parmnum=1) at cp/call.c:4430
#20 0x08054eaf in build_over_call (cand=0x446bf604, flags=3)
at cp/call.c:4577
#21 0x0805416d in convert_like_real (convs=0x40199dec, expr=0x4015dae0,
fn=0x0, argnum=0, inner=-1) at cp/call.c:4149
#22 0x08053dca in convert_like_real (convs=0x446c12d0, expr=0x4015dae0,
fn=0x0, argnum=0, inner=0) at cp/call.c:4220
#23 0x0805a321 in initialize_reference (type=0x40199288, expr=0x4015dae0,
decl=0x0) at cp/call.c:6132
#24 0x08113f48 in convert_for_initialization (exp=0x40199288, type=0x0,
rhs=0x4015dae0, flags=3, errtype=0x84a0e78 "default argument",
fndecl=0x40199dec, parmnum=1) at cp/typeck.c:6202
#25 0x080548fc in convert_default_arg (type=0x40199288, arg=0x0,
fn=0x40199dec, parmnum=1) at cp/call.c:4430
W.
-------------------------------------------------------------------------
Wolfgang Bangerth email: bangerth at ices dot utexas dot edu
www: http://www.ices.utexas.edu/~bangerth/