[Bug binutils/29258] New: c++filt produces inconsistent output

[schnetter at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29258

            Bug ID: 29258
           Summary: c++filt produces inconsistent output
           Product: binutils
           Version: 2.38
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: schnetter at gmail dot com
  Target Milestone: ---

This command:

./view/bin/c++filt
_ZZN5Arith4fmapIZN3Z4c8z4c_varsINS_4simdIdEEEC1EbRKS4_S7_S7_S7_S7_S7_RKNS_3vecIS4_Li3ELNS_6dnup_tE0EEERKNS_4gmatIS4_Li3ELS9_0ELS9_0ELNS_6symm_tE1EEESH_RKNSD_ISA_Li3ELS9_0ELS9_0ELSE_1EEERKNSD_ISF_Li3ELS9_0ELS9_0ELSE_1EEES7_SC_SH_SK_RKNS8_IS4_Li3ELS9_1EEERKNS8_ISA_Li3ELS9_1EEES7_SC_S7_SC_SH_SQ_ST_RKNS8_ISF_Li3ELS9_1EEES7_SC_SH_EUliiE4_JiES4_EENS_4vectIT1_Li6EEERKT_RKNSY_IiLi6EEEDpRKNSY_IT0_Li6EEEENKUliE_clEi

with

$ ./view/bin/c++filt --version
GNU c++filt (GNU Binutils) 2.38
Copyright (C) 2022 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.

produces the output

Arith::fmap<Z4c::z4c_vars<Arith::simd<double> >::z4c_vars(bool,
Arith::simd<double> const&, Arith::simd<double> const&, Arith::simd<double>
const&, Arith::simd<double> const&, Arith::simd<double> const&,
Arith::simd<double> const&, Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)0> const&, Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0,
(Arith::dnup_t)0, (Arith::symm_t)1> const&, Arith::gmat<Arith::simd<double>, 3,
(Arith::dnup_t)0, (Arith::dnup_t)0, (Arith::symm_t)1> const&,
Arith::gmat<Arith::vec<Arith::simd<double>, 3, (Arith::dnup_t)0>, 3,
(Arith::dnup_t)0, (Arith::dnup_t)0, (Arith::symm_t)1> const&,
Arith::gmat<Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0,
(Arith::dnup_t)0, (Arith::symm_t)1>, 3, (Arith::dnup_t)0, (Arith::dnup_t)0,
(Arith::symm_t)1> const&, Arith::simd<double> const&,
Arith::vec<Arith::simd<double>, 3, (Arith::dnup_t)0> const&,
Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0, (Arith::dnup_t)0,
(Arith::symm_t)1> const&, Arith::gmat<Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)0>, 3, (Arith::dnup_t)0, (Arith::dnup_t)0, (Arith::symm_t)1>
const&, Arith::vec<Arith::simd<double>, 3, (Arith::dnup_t)1> const&,
Arith::vec<Arith::vec<Arith::simd<double>, 3, (Arith::dnup_t)0>, 3,
(Arith::dnup_t)1> const&, Arith::simd<double> const&,
Arith::vec<Arith::simd<double>, 3, (Arith::dnup_t)0> const&,
Arith::simd<double> const&, Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)0> const&, Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0,
(Arith::dnup_t)0, (Arith::symm_t)1> const&, Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)1> const&, Arith::vec<Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)0>, 3, (Arith::dnup_t)1> const&,
Arith::vec<Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0,
(Arith::dnup_t)0, (Arith::symm_t)1>, 3, (Arith::dnup_t)1> const&,
Arith::simd<double> const&, Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)0> const&, Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0,
(Arith::dnup_t)0, (Arith::symm_t)1> const&)::{lambda(int, int)#6}, int,
Arith::simd<double> >(Z4c::z4c_vars<Arith::simd<double> >::z4c_vars(bool,
Arith::simd<double> const&, Arith::simd<double> const&, Arith::simd<double>
const&, Arith::simd<double> const&, Arith::simd<double> const&,
Arith::simd<double> const&, Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)0> const&, Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0,
(Arith::dnup_t)0, (Arith::symm_t)1> const&, Arith::gmat<Arith::simd<double>, 3,
(Arith::dnup_t)0, (Arith::dnup_t)0, (Arith::symm_t)1> const&,
Arith::gmat<Arith::vec<Arith::simd<double>, 3, (Arith::dnup_t)0>, 3,
(Arith::dnup_t)0, (Arith::dnup_t)0, (Arith::symm_t)1> const&,
Arith::gmat<Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0,
(Arith::dnup_t)0, (Arith::symm_t)1>, 3, (Arith::dnup_t)0, (Arith::dnup_t)0,
(Arith::symm_t)1> const&, Arith::simd<double> const&,
Arith::vec<Arith::simd<double>, 3, (Arith::dnup_t)0> const&,
Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0, (Arith::dnup_t)0,
(Arith::symm_t)1> const&, Arith::gmat<Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)0>, 3, (Arith::dnup_t)0, (Arith::dnup_t)0, (Arith::symm_t)1>
const&, Arith::vec<Arith::simd<double>, 3, (Arith::dnup_t)1> const&,
Arith::vec<Arith::vec<Arith::simd<double>, 3, (Arith::dnup_t)0>, 3,
(Arith::dnup_t)1> const&, Arith::simd<double> const&,
Arith::vec<Arith::simd<double>, 3, (Arith::dnup_t)0> const&,
Arith::simd<double> const&, Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)0> const&, Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0,
(Arith::dnup_t)0, (Arith::symm_t)1> const&, Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)1> const&, Arith::vec<Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)0>, 3, (Arith::dnup_t)1> const&,
Arith::vec<Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0,
(Arith::dnup_t)0, (Arith::symm_t)1>, 3, (Arith::dnup_t)1> const&,
Arith::simd<double> const&, Arith::vec<Arith::simd<double>, 3,
(Arith::dnup_t)0> const&, Arith::gmat<Arith::simd<double>, 3, (Arith::dnup_t)0,
(Arith::dnup_t)0, (Arith::symm_t)1> const&)::{lambda(int, int)#6} const&,
Arith::vect<int, 6> const&, Arith::vect<int, 6>
const&)::{lambda(int)#1}::operator()(int) const

which has an unbalanced number of parentheses. It lacks at least the final,
closing parenthesis, and possibly more output.

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