[Bug c++/84942] New: internal compiler error: in fold_convert_const_int_from_real, at fold-const.c:2011

[vegard.nossum at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84942

            Bug ID: 84942
           Summary: internal compiler error: in
                    fold_convert_const_int_from_real, at fold-const.c:2011
           Product: gcc
           Version: 8.0.1
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vegard.nossum at gmail dot com
                CC: webrown.cpp at gmail dot com
  Target Milestone: ---

Input:

a(__attribute__((b((int)__builtin_inf() * 1ULL / auto))))

Output:

$ cc1plus 
<stdin>:1:41: internal compiler error: in fold_convert_const_int_from_real, at
fold-const.c:2011
0x1f571ab fold_convert_const_int_from_real
        /home/vegard/git/gcc/gcc/fold-const.c:2011
0x1f571ab fold_convert_const
        /home/vegard/git/gcc/gcc/fold-const.c:2257
0x1fc4255 const_unop(tree_code, tree_node*, tree_node*)
        /home/vegard/git/gcc/gcc/fold-const.c:1729
0x1f9aff4 fold_unary_loc(unsigned int, tree_code, tree_node*, tree_node*)
        /home/vegard/git/gcc/gcc/fold-const.c:7737
0x1fa2321 fold_build1_loc(unsigned int, tree_code, tree_node*, tree_node*)
        /home/vegard/git/gcc/gcc/fold-const.c:12282
0xa34f93 cxx_eval_constant_expression
        /home/vegard/git/gcc/gcc/cp/constexpr.c:4638
0xa4996a cxx_eval_outermost_constant_expr
        /home/vegard/git/gcc/gcc/cp/constexpr.c:4832
0xa57256 maybe_constant_value(tree_node*, tree_node*)
        /home/vegard/git/gcc/gcc/cp/constexpr.c:5049
0xab6bea cp_fully_fold(tree_node*)
        /home/vegard/git/gcc/gcc/cp/cp-gimplify.c:2041
0x13cf877 cp_build_binary_op(unsigned int, tree_code, tree_node*, tree_node*,
int)
        /home/vegard/git/gcc/gcc/cp/typeck.c:5391
0x940727 build_new_op_1
        /home/vegard/git/gcc/gcc/cp/call.c:6017
0x944116 build_new_op(unsigned int, tree_code, int, tree_node*, tree_node*,
tree_node*, tree_node**, int)
        /home/vegard/git/gcc/gcc/cp/call.c:6062
0x1392a6b build_x_binary_op(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node**, int)
        /home/vegard/git/gcc/gcc/cp/typeck.c:4032
0x10f0d9c tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        /home/vegard/git/gcc/gcc/cp/pt.c:17546
0xa5796a fold_non_dependent_expr(tree_node*)
        /home/vegard/git/gcc/gcc/cp/constexpr.c:5102
0x105112f build_non_dependent_expr(tree_node*)
        /home/vegard/git/gcc/gcc/cp/pt.c:25305
0x13933bf build_x_binary_op(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node**, int)
        /home/vegard/git/gcc/gcc/cp/typeck.c:4024
0xec484b cp_parser_binary_expression
        /home/vegard/git/gcc/gcc/cp/parser.c:9356
0xec62ca cp_parser_assignment_expression
        /home/vegard/git/gcc/gcc/cp/parser.c:9486
0xed4304 cp_parser_parenthesized_expression_list
        /home/vegard/git/gcc/gcc/cp/parser.c:7764
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

Version:

GNU C++14 (GCC) version 8.0.1 20180306 (experimental) (x86_64-pc-linux-gnu)