https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99631
--- Comment #14 from danakj at orodu dot net ---
Thank you =)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110158
--- Comment #6 from danakj at orodu dot net ---
In case it is of help, here's an even smaller repro that clang reports the
error in libstdc++. For whatever reason gcc does not notice the libstdc++ bug
here.
https://gcc.godbolt.org/z/Phndafeoe
`
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110158
--- Comment #5 from danakj at orodu dot net ---
As a means to work around #4 in static asserts, making your string long enough
that it avoids the SSO will allow the compiler to accept it.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110999
Bug ID: 110999
Summary: GCC rejects static variable with constexpr storage
from inline method definition
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110927
Bug ID: 110927
Summary: GCC fails to parse dependent type in concept through
partial specialization
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: no
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110905
--- Comment #4 from danakj at orodu dot net ---
Ok it only happens if the VecIntoIter class has a base class, even when it's
empty the bug reproduces. But when I remove the IteratorBase base class, then
GCC compiles it correctly.
It's getting ha
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110905
--- Comment #3 from danakj at orodu dot net ---
Repro down from 37k to under 1000 lines now: https://godbolt.org/z/enMxaqjb6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110905
--- Comment #2 from danakj at orodu dot net ---
Ah ok. Here's a big reproduction: https://godbolt.org/z/Kj7Tcd6P4
/opt/compiler-explorer/gcc-trunk-20230804/include/c++/14.0.0/bits/stl_construct.h:97:14:
in 'constexpr' expansion of
'((sus::cont
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110905
Bug ID: 110905
Summary: GCC rejects constexpr code that may re-initialize
union member
Product: gcc
Version: 13.2.1
Status: UNCONFIRMED
Severity: normal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110900
--- Comment #6 from danakj at orodu dot net ---
Thanks for the link, I used the godbolt from that bug to set up the right
environment and that let me minimize it. I posted it into the dupe bug.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110158
--- Comment #4 from danakj at orodu dot net ---
Here's a repro without the std::string inside a union. It is the SSO union
inside the string that causes the error.
https://gcc.godbolt.org/z/T8oM8vYnq
```
#include
template
constexpr T fold(T
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110900
--- Comment #5 from danakj at orodu dot net ---
> Can you please read https://gcc.gnu.org/bugs/ on what we need?
Yeah, sorry I can't reproduce this locally on my Mac or Windows machine. It
reproduces on github Linux CI bots, and I have diagnosed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110900
--- Comment #4 from danakj at orodu dot net ---
The error message is the same as 110158 but to be clear the std::string is not
in a union. The error message is about the union _inside_ std::string.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110900
--- Comment #1 from danakj at orodu dot net ---
I am going to try work around this by not using std::string in constant
expressions..
So in the meantime I pushed a branch where this bug will continue to reproduce.
With gcc-13:
git clone --recu
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110900
Bug ID: 110900
Summary: std::string initializes SSO object subfield without
making the SSO object active in the union
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110245
--- Comment #1 from danakj at orodu dot net ---
Note that GCC has no problem with doing this constexpr construction if the
object is not stored as an lvalue.
```
struct Store {
constexpr Store() {}
union {
int i;
};
bool
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110245
Bug ID: 110245
Summary: constant evaluation fails with uninitialized union and
default constructor
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: nor
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103760
danakj at orodu dot net changed:
What|Removed |Added
CC||danakj at orodu dot net
--- Co
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99599
--- Comment #16 from danakj at orodu dot net ---
Well for anyone who hits the same issue, it appears that GCC _does_ follow
Clang and MSVC in not considering the overload and chasing through the concept
resolution if the non-concept types are temp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99599
--- Comment #15 from danakj at orodu dot net ---
The workaround listed in Comment #6 does not work for templated types,
unfortunately, making Clang and MSVC more expressive here than GCC.
https://godbolt.org/z/obhsqhrbx
```
#include
#include
#
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110160
danakj at orodu dot net changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
Resolution|--
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99599
danakj at orodu dot net changed:
What|Removed |Added
CC||danakj at orodu dot net
--- Com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110160
--- Comment #2 from danakj at orodu dot net ---
Ugh, yeah, I guess it is. It means you can't redirect through a template
function that uses concepts with G++.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110160
Bug ID: 110160
Summary: g++ rejects concept as cyclical with non-matching
function signature
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108897
--- Comment #2 from danakj at orodu dot net ---
Thank you for the workaround!
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108897
Bug ID: 108897
Summary: Comparing pointer to field in rvalue class is not
considered constant expression
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108775
--- Comment #1 from danakj at orodu dot net ---
This occurs on 12.2.0 Linux, as well as GCC trunk on Godbolt in C++20 mode.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108775
Bug ID: 108775
Summary: Move construction clobbers data through
[[no_unique_address]]
Product: gcc
Version: 12.2.1
Status: UNCONFIRMED
Severity: normal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108169
--- Comment #1 from danakj at orodu dot net ---
Sorry I inverted my logic.
In Clang and MSVC an `auto` class-type template parameter is not const. In GCC
it is.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108169
Bug ID: 108169
Summary: class type template parameters are non-const in GCC
(differs from other compilers)
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Sever
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108067
--- Comment #1 from danakj at orodu dot net ---
Notably, this occurs with friend operator== or operator<=>.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108067
Bug ID: 108067
Summary: Miscompilation with friend function with parameter
pack: mismatched argument pack lengths
Product: gcc
Version: 12.2.1
Status: UNCONFIRMED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108066
danakj at orodu dot net changed:
What|Removed |Added
Version|12.2.0 |13.0
--- Comment #1 from danak
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108066
Bug ID: 108066
Summary: ICE in use_pack_expansion_extra_args_p, at
cp/pt.cc:12661
Product: gcc
Version: 12.2.0
Status: UNCONFIRMED
Severity: normal
P
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107544
--- Comment #4 from danakj at orodu dot net ---
It looks related but I am not sure it is a duplicate. In this case, the concept
is being used from a non-friend context first and still accessing the private
data. In that bug, they demonstrate clan
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107544
--- Comment #1 from danakj at orodu dot net ---
Clang report: https://github.com/llvm/llvm-project/issues/58833
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107544
Bug ID: 107544
Summary: Friended struct with concept gives different output in
clang/gcc/MSVC
Product: gcc
Version: 12.2.0
Status: UNCONFIRMED
Severity: normal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107542
--- Comment #3 from danakj at orodu dot net ---
> Note please next time also attach the testcase (or put it inline) and not
> just link against godbolt.
Will do, thanks for attaching it for me.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107542
--- Comment #2 from danakj at orodu dot net ---
The same thing works okay with operator== instead of operator<=>
https://godbolt.org/z/qnPx3bYT4
```
#include
#include
template
concept Ord = requires(const Lhs& lhs, const Rhs& rhs) {
{ l
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107542
Bug ID: 107542
Summary: ICE in spaceship_comp_cat, at cp/method.cc:1055
Product: gcc
Version: 12.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component
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