https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96441
Bug ID: 96441
Summary: ICE in tree check: expected integer_cst, have
cond_expr in get_len, at tree.h:5954
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: haoxintu at gmail dot com
Target Milestone: ---
Hi, all.
This code, reduced by C-Vise, makes GCC-trunk ICE and makes released GCC
versions "confused by early errors".
Input:
//small.cc
enum struct a : int;
template <typename = enum class a { b = 0 ? : throw}> class A {};
template <> enum struct a {c};
Command:
g++ small.cc
Output:
small.cc:2:47: error: expression ‘<throw-expression>’ is not a constant
expression
2 | template <typename = enum class a { b = 0 ? : throw}> class A {};
| ^~~~~
small.cc:3:28: internal compiler error: tree check: expected integer_cst, have
cond_expr in get_len, at tree.h:5954
3 | template <> enum struct a {c};
| ^
0x7c7fd7 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/tree.c:9687
0x616fed tree_check(tree_node const*, char const*, int, char const*, tree_code)
../../gcc/tree.h:3559
0x616fed wi::extended_tree<192>::get_len() const
../../gcc/tree.h:5954
0x616fed wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::decompose(long*, unsigned int, generic_wide_int<wi::extended_tree<192> >
const&)
../../gcc/wide-int.h:985
0x616fed wide_int_ref_storage<true,
false>::wide_int_ref_storage<generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&, unsigned int)
../../gcc/wide-int.h:1034
0x616fed generic_wide_int<wide_int_ref_storage<true, false>
>::generic_wide_int<generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&, unsigned int)
../../gcc/wide-int.h:790
0x616fed wi::binary_traits<generic_wide_int<wi::extended_tree<192> >, int,
wi::int_traits<generic_wide_int<wi::extended_tree<192> > >::precision_type,
wi::int_traits<int>::precision_type>::result_type
wi::add<generic_wide_int<wi::extended_tree<192> >,
int>(generic_wide_int<wi::extended_tree<192> > const&, int const&, signop,
wi::overflow_type*)
../../gcc/wide-int.h:2467
0x616fed build_enumerator(tree_node*, tree_node*, tree_node*, tree_node*,
unsigned int)
../../gcc/cp/decl.c:15857
0x9aafec cp_parser_enumerator_definition
../../gcc/cp/parser.c:19585
0x9aafec cp_parser_enumerator_list
../../gcc/cp/parser.c:19514
0x9aafec cp_parser_enum_specifier
../../gcc/cp/parser.c:19444
0x9aafec cp_parser_type_specifier
../../gcc/cp/parser.c:17769
0x9ab50e cp_parser_decl_specifier_seq
../../gcc/cp/parser.c:14436
0x9d2fe5 cp_parser_single_declaration
../../gcc/cp/parser.c:29499
0x9d4300 cp_parser_explicit_specialization
../../gcc/cp/parser.c:17689
0x9d776d cp_parser_declaration
../../gcc/cp/parser.c:13456
0x9d7d2b cp_parser_translation_unit
../../gcc/cp/parser.c:4793
0x9d7d2b c_parse_file()
../../gcc/cp/parser.c:44081
0xaf2e9d c_common_parse_file()
../../gcc/c-family/c-opts.c:1188
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.
My gcc version is
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/home/haoxin/corpus-compilers/gcc-trunk/gcc-master/build/libexec/gcc/x86_64-pc-linux-gnu/11.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../configure
--prefix=/home/haoxin/corpus-compilers/gcc-trunk/gcc-master/build/
--enable-languages=c,c++ CC=gcc CXX=g++
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20200801 (experimental) (GCC)
Thanks,
Haoxin
