https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115331
Bug ID: 115331
Summary: [15 regression] ICE-on-invalid passing a typoed lambda
to a list-initializer
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: blubban at gmail dot com
Target Milestone: ---
struct has_ctor
{
has_ctor(auto arg) {}
};
void aaa()
{
has_ctor{[]<(){}}; // typo intentional
}
-std=c++20
<source>: In function 'void aaa()':
<source>:8:17: error: expected identifier before '(' token
8 | has_ctor{[]<(){}};
| ^
<source>:8:19: error: expected '>' before '{' token
8 | has_ctor{[]<(){}};
| ^
<source>: In instantiation of 'has_ctor::has_ctor(auto:1) [with auto:1 =
aaa()::<lambda()>]':
<source>:3:5: required from here
3 | has_ctor(auto arg) {}
| ^~~~~~~~
<source>:3:5: internal compiler error: tree check: expected tree that contains
'decl common' structure, have 'error_mark' in decl_template_parm_check, at
cp/cp-tree.h:5138
0x269996c internal_error(char const*, ...)
???:0
0x96eb0f tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
???:0
0xba20c6 mangle_decl(tree_node*)
???:0
0x16c5fc5 decl_assembler_name(tree_node*)
???:0
0x16eea01 assign_assembler_name_if_needed(tree_node*)
???:0
0xe8c11d cgraph_node::analyze()
???:0
0xe8f6d1 symbol_table::finalize_compilation_unit()
???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
Online reproducer: https://godbolt.org/z/K1hjEsaf5
The ICE does not reproduce on 14.1, it's trunk only (tested on
Compiler-Explorer-Build-gcc-cbf2ed4b309d54039d74be5d730299012e7681b3-binutils-2.42,
15.0.0 20240603).
