[Bug c++/114311] Possibly wrong "error: ‘this’ is not a constant expression" with consteval member function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114311 --- Comment #5 from Carlo Wood --- Hey Andrew :) You probably mean https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98752 But they are different in that I think that this report is invalid... See "discussion" here: https://stackoverflow.com/a/78142737/1487069 But I'd definitely like to hear your expert view on it. If it's invalid then sorry for wasting your time :/.
[Bug c++/114311] Possibly wrong "error: ‘this’ is not a constant expression" with consteval member function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114311 --- Comment #2 from Carlo Wood --- I meant `constexpr Symbol x;` inside main - with the same error.
[Bug c++/114311] Possibly wrong "error: ‘this’ is not a constant expression" with consteval member function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114311
Carlo Wood changed:
What|Removed |Added
Summary|wrong "error: ‘this’ is not |Possibly wrong "error:
|a constant expression" with |‘this’ is not a constant
|consteval member function |expression" with consteval
||member function
--- Comment #1 from Carlo Wood ---
I stand corrected. When adding `this->` it is still giving an error when trying
to instantiate the template member function.
For example:
```
template
struct SymbolRef { };
struct Symbol {
int const id_;
consteval Symbol() : id_(1) { }
template
consteval operator SymbolRef() const
{
return SymbolRefid_>{};
}
};
int main()
{
Symbol x;
static_cast>(x);
}
```
Gives an equivalent error, despite the `this->`.
I am not certain anymore if this is a wrong error.
[Bug c++/114311] New: wrong "error: ‘this’ is not a constant expression" with consteval member function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114311
Bug ID: 114311
Summary: wrong "error: ‘this’ is not a constant expression"
with consteval member function
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: carlo at gcc dot gnu.org
Target Milestone: ---
The following snippet:
```
template
struct SymbolRef { };
struct Symbol {
int const id_;
consteval Symbol() : id_(1) { }
template
consteval operator SymbolRef() const
{
return SymbolRef{};
}
};
```
fails with error:
```
source>: In member function 'consteval Symbol::operator SymbolRef() const':
:12:22: error: '*(const Symbol*)this' is not a constant expression
12 | return SymbolRef{};
| ^~~
:12:22: note: in template argument for type 'int'
```
Not a regression.
DOES compile with using `this->id_`.
[Bug middle-end/50481] builtin to reverse the bit order
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50481 Carlo Wood changed: What|Removed |Added CC||carlo at gcc dot gnu.org --- Comment #8 from Carlo Wood --- Bump - I need this too ;)
[Bug c++/101405] New: internal compiler error: in reshape_init_class, at cp/decl.c:6483
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101405
Bug ID: 101405
Summary: internal compiler error: in reshape_init_class, at
cp/decl.c:6483
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: carlo at gcc dot gnu.org
Target Milestone: ---
Invalid code.
struct A {
int const a = 1;
int const b = 2;
};
struct B : A {
using A::a;
using A::b;
int const c = 3;
int const d = 4;
};
int main()
{
[[maybe_unused]] B b =
{
.a = 10,
.d = 42
};
}
Result:
prog.cc: In function 'int main()':
prog.cc:19:3: internal compiler error: in reshape_init_class, at cp/decl.c:6483
19 | };
| ^
0x5ffc9b reshape_init_class
../../source/gcc/cp/decl.c:6483
0x5ffc9b reshape_init_r
../../source/gcc/cp/decl.c:6791
0x6b19ac reshape_init(tree_node*, tree_node*, int)
../../source/gcc/cp/decl.c:6867
0x6b3e12 check_initializer
../../source/gcc/cp/decl.c:7064
0x6c7978 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../source/gcc/cp/decl.c:8101
0x7823d7 cp_parser_init_declarator
../../source/gcc/cp/parser.c:22258
0x760a04 cp_parser_simple_declaration
../../source/gcc/cp/parser.c:14801
0x76282d cp_parser_declaration_statement
../../source/gcc/cp/parser.c:13936
0x762ba6 cp_parser_statement
../../source/gcc/cp/parser.c:12066
0x763d2d cp_parser_statement_seq_opt
../../source/gcc/cp/parser.c:12433
0x763de0 cp_parser_compound_statement
../../source/gcc/cp/parser.c:12382
0x78051a cp_parser_function_body
../../source/gcc/cp/parser.c:24448
0x78051a cp_parser_ctor_initializer_opt_and_function_body
../../source/gcc/cp/parser.c:24499
0x78174a cp_parser_function_definition_after_declarator
../../source/gcc/cp/parser.c:30572
0x7828ac cp_parser_function_definition_from_specifiers_and_declarator
../../source/gcc/cp/parser.c:30488
0x7828ac cp_parser_init_declarator
../../source/gcc/cp/parser.c:22020
0x760a04 cp_parser_simple_declaration
../../source/gcc/cp/parser.c:14801
0x78b715 cp_parser_declaration
../../source/gcc/cp/parser.c:14498
0x78c3a6 cp_parser_toplevel_declaration
../../source/gcc/cp/parser.c:14527
0x78c3a6 cp_parser_translation_unit
../../source/gcc/cp/parser.c:4958
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