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* [Bug c++/115586] New: name-independent declarations causing an internal compiler error (c++26)
@ 2024-06-22 1:59 amuly.jain at gmail dot com
2024-06-22 2:09 ` [Bug c++/115586] " amuly.jain at gmail dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: amuly.jain at gmail dot com @ 2024-06-22 1:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115586
Bug ID: 115586
Summary: name-independent declarations causing an internal
compiler error (c++26)
Product: gcc
Version: 14.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: amuly.jain at gmail dot com
Target Milestone: ---
gcc -v output:
Using built-in specs.
COLLECT_GCC=g++-14
COLLECT_LTO_WRAPPER=/home/amuhak/gcc/gcc-14/bin/../libexec/gcc/x86_64-linux-gnu/14.1.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../gcc/configure -v --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
--prefix=/home/amuhak/build/gcc-14 --enable-checking=release
--enable-languages=c,c++,fortran,go --disable-multilib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.1.0 (GCC)
Command run: g++-14 main.cpp
Output:
main.cpp: In function ‘int main()’:
main.cpp:8:19: warning: name-independent declarations only available with
‘-std=c++2c’ or ‘-std=gnu++2c’ [-Wc++26-extensions]
8 | for (auto [_, _, a] : in) {
| ^
main.cpp:8:25: internal compiler error: Segmentation fault
8 | for (auto [_, _, a] : in) {
| ^
0x7f179196831f ???
./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0
0x7f179194d1c9 __libc_start_call_main
../sysdeps/nptl/libc_start_call_main.h:58
0x7f179194d28a __libc_start_main_impl
../csu/libc-start.c:360
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.
Command run: g++-14 -freport-bug main.cpp
Output:
main.cpp: In function ‘int main()’:
main.cpp:8:19: warning: name-independent declarations only available with
‘-std=c++2c’ or ‘-std=gnu++2c’ [-Wc++26-extensions]
8 | for (auto [_, _, a] : in) {
| ^
main.cpp:8:25: internal compiler error: Segmentation fault
8 | for (auto [_, _, a] : in) {
| ^
0x7f5ccf93631f ???
./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0
0x7f5ccf91b1c9 __libc_start_call_main
../sysdeps/nptl/libc_start_call_main.h:58
0x7f5ccf91b28a __libc_start_main_impl
../csu/libc-start.c:360
Please submit a full bug report, with preprocessed source.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
The bug is not reproducible, so it is likely a hardware or OS problem.
Here is a "working" example (https://godbolt.org/z/7vdoj7z3j):
#include <vector>
#include <tuple>
#include <iostream>
int main() {
std::vector<std::tuple<int, int, int>> in;
in.emplace_back(1, 2, 3);
for (auto [_, _, a] : in) {
std::cout << a << std::endl;
}
}
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/115586] name-independent declarations causing an internal compiler error (c++26)
2024-06-22 1:59 [Bug c++/115586] New: name-independent declarations causing an internal compiler error (c++26) amuly.jain at gmail dot com
@ 2024-06-22 2:09 ` amuly.jain at gmail dot com
2024-06-22 2:11 ` pinskia at gcc dot gnu.org
2024-06-22 2:17 ` [Bug c++/115586] c++26: with 2 or more name-independent declarations (anonymous structure bindings) with for loop pinskia at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: amuly.jain at gmail dot com @ 2024-06-22 2:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115586
--- Comment #1 from Amulya Jain <amuly.jain at gmail dot com> ---
Created attachment 58485
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58485&action=edit
The preprocessed file
I am unable to attach the preprocessed file due to the 1000kb limit (my file is
1040kb). So I have attached a zip file zipped with 7z.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/115586] name-independent declarations causing an internal compiler error (c++26)
2024-06-22 1:59 [Bug c++/115586] New: name-independent declarations causing an internal compiler error (c++26) amuly.jain at gmail dot com
2024-06-22 2:09 ` [Bug c++/115586] " amuly.jain at gmail dot com
@ 2024-06-22 2:11 ` pinskia at gcc dot gnu.org
2024-06-22 2:17 ` [Bug c++/115586] c++26: with 2 or more name-independent declarations (anonymous structure bindings) with for loop pinskia at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-06-22 2:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115586
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL|https://godbolt.org/z/7vdoj |
|7z3j |
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://godbolt.org/z/7vdoj7z3j
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/115586] c++26: with 2 or more name-independent declarations (anonymous structure bindings) with for loop
2024-06-22 1:59 [Bug c++/115586] New: name-independent declarations causing an internal compiler error (c++26) amuly.jain at gmail dot com
2024-06-22 2:09 ` [Bug c++/115586] " amuly.jain at gmail dot com
2024-06-22 2:11 ` pinskia at gcc dot gnu.org
@ 2024-06-22 2:17 ` pinskia at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-06-22 2:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115586
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2024-06-22
Summary|name-independent |c++26: with 2 or more
|declarations causing an |name-independent
|internal compiler error |declarations (anonymous
|(c++26) |structure bindings) with
| |for loop
CC| |pinskia at gcc dot gnu.org
Status|UNCONFIRMED |NEW
Keywords| |ice-on-valid-code
Ever confirmed|0 |1
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
Reduced testcase:
```
struct f
{
int a;
int b;
int c;
};
int main() {
f in1[4];
//auto [_, _, b] = in1[0];
for (auto [_, _, a] : in1) { }
}
```
Note if uncomment the other name-independent declaration, we get a slightly
different ICE:
<source>:12:34: internal compiler error: in pop_local_binding, at
cp/name-lookup.cc:2655
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-06-22 2:17 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-06-22 1:59 [Bug c++/115586] New: name-independent declarations causing an internal compiler error (c++26) amuly.jain at gmail dot com
2024-06-22 2:09 ` [Bug c++/115586] " amuly.jain at gmail dot com
2024-06-22 2:11 ` pinskia at gcc dot gnu.org
2024-06-22 2:17 ` [Bug c++/115586] c++26: with 2 or more name-independent declarations (anonymous structure bindings) with for loop pinskia at gcc dot gnu.org
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