[Bug c++/98216] [C++20] std::array<double, N> template parameter error with negative values

["ppalka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98216

Patrick Palka <ppalka at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ppalka at gcc dot gnu.org

--- Comment #5 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Related testcase which may or may not be caused by the same underlying bug:

$ cat testcase.C
template <double s> void foo() {}
template void foo<-1.0>();
template void foo<-2.0>();

$ g++ -std=c++20 testcase.C
testcase.C:3:26: error: Two symbols with same comdat_group are not linked by
the same_comdat_group list.
    3 | template void foo<-2.0>();                                              
      |                          ^  
_Z3fooILdffffffff00000000EEvv/1 (void foo() [with double s = -2.0e+0])
@0x7fdb12c4aee0         
  Type: function definition analyzed
  Visibility: force_output forced_by_abi no_reorder public weak
comdat_group:_Z3fooILdffffffff00000000EEvv one_only
  previous sharing asm name: 0
  References: 
  Referring:          
  Function flags: body
  Called by: 
  Calls:                                                                        
_Z3fooILdffffffff00000000EEvv/0 (void foo() [with double s = -1.0e+0])
@0x7fdb12c4add0
  Type: function definition analyzed                                            
  Visibility: force_output forced_by_abi no_reorder public weak
comdat_group:_Z3fooILdffffffff00000000EEvv one_only
  next sharing asm name: 1
  References: 
  Referring: 
  Function flags: body
  Called by: 
  Calls: 
testcase.C:3:26: internal compiler error: symtab_node::verify failed
0xbebe81 symtab_node::verify_symtab_nodes()
        /home/patrick/code/gcc/gcc/symtab.c:1406
0xc00586 symtab_node::checking_verify_symtab_nodes()
        /home/patrick/code/gcc/gcc/cgraph.h:675 
0xc00586 symbol_table::compile()
        /home/patrick/code/gcc/gcc/cgraphunit.c:2277
0xc02f67 symbol_table::compile()
        /home/patrick/code/gcc/gcc/cgraphunit.c:2274
0xc02f67 symbol_table::finalize_compilation_unit()
        /home/patrick/code/gcc/gcc/cgraphunit.c:2542