[Bug c++/82112] New: internal compiler error: in fold_convert_loc, at fold-const.c:2262

[noloader at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82112

            Bug ID: 82112
           Summary: internal compiler error: in fold_convert_loc, at
                    fold-const.c:2262
           Product: gcc
           Version: 7.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: noloader at gmail dot com
  Target Milestone: ---

I'm working on GCC112 (gcc112.fsffrance.org on the compile farm).

$ cat test.cxx
#include <altivec.h>

typedef unsigned char byte;
typedef vector unsigned char uint8x16_p8;
typedef vector unsigned long long uint64x2_p8;
#define ALIGN_DATA(n) __attribute__((aligned(n)))

int main(int argc, char* argv[])
{
  ALIGN_DATA(16) const byte c[16] = {
    0,1,2,3,  4,5,6,7,  8,9,10,11,  12,13,14,15
  };
  const uint64x2_p8 mask = vec_ld(0, c);
  return 0;
}

==========

$ /opt/cfarm/gcc-latest/bin/g++ -c test.cxx
test.cxx: In function 'int main(int, char**)':
test.cxx:13:39: internal compiler error: in fold_convert_loc, at
fold-const.c:2262
   const uint64x2_p8 mask = vec_ld(0, c);
                                       ^
0x1057fb4b fold_convert_loc(unsigned int, tree_node*, tree_node*)
        ../../gcc-7.1.0-src/gcc/fold-const.c:2261
0x103b3363 altivec_resolve_overloaded_builtin(unsigned int, tree_node*, void*)
        ../../gcc-7.1.0-src/gcc/config/rs6000/rs6000-c.c:6223
0x103632bb resolve_overloaded_builtin(unsigned int, tree_node*, vec<tree_node*,
va_gc, vl_embed>*)
        ../../gcc-7.1.0-src/gcc/c-family/c-common.c:7192
0x102a7713 finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**,
bool, bool, int)
        ../../gcc-7.1.0-src/gcc/cp/semantics.c:2406
0x102399b7 cp_parser_postfix_expression
        ../../gcc-7.1.0-src/gcc/cp/parser.c:6992
0x1023a57f cp_parser_unary_expression
        ../../gcc-7.1.0-src/gcc/cp/parser.c:8103
0x1023b883 cp_parser_cast_expression
        ../../gcc-7.1.0-src/gcc/cp/parser.c:8781
0x1023c207 cp_parser_binary_expression
        ../../gcc-7.1.0-src/gcc/cp/parser.c:8882
0x1023cac7 cp_parser_assignment_expression
        ../../gcc-7.1.0-src/gcc/cp/parser.c:9169
0x1023d05b cp_parser_constant_expression
        ../../gcc-7.1.0-src/gcc/cp/parser.c:9439
0x1023e153 cp_parser_initializer_clause
        ../../gcc-7.1.0-src/gcc/cp/parser.c:21575
0x1023f5eb cp_parser_initializer
        ../../gcc-7.1.0-src/gcc/cp/parser.c:21515
0x10256ccf cp_parser_init_declarator
        ../../gcc-7.1.0-src/gcc/cp/parser.c:19332
0x102574cb cp_parser_simple_declaration
        ../../gcc-7.1.0-src/gcc/cp/parser.c:12777
0x10258393 cp_parser_block_declaration
        ../../gcc-7.1.0-src/gcc/cp/parser.c:12602
0x10258eff cp_parser_declaration_statement
        ../../gcc-7.1.0-src/gcc/cp/parser.c:12212
0x1022d5df cp_parser_statement
        ../../gcc-7.1.0-src/gcc/cp/parser.c:10699
0x1022e74b cp_parser_statement_seq_opt
        ../../gcc-7.1.0-src/gcc/cp/parser.c:11031
0x1022e857 cp_parser_compound_statement
        ../../gcc-7.1.0-src/gcc/cp/parser.c:10985
0x10245643 cp_parser_function_body
        ../../gcc-7.1.0-src/gcc/cp/parser.c:21432
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.

==========

$ /opt/cfarm/gcc-latest/bin/g++ --version
g++ (GCC) 7.1.0
Copyright (C) 2017 Free Software Foundation, Inc.