https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80635
Milian Wolff changed:
What|Removed |Added
CC||mail at milianw dot de
--- Comment #69 fr
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103131
--- Comment #1 from Milian Wolff ---
correction: gcc version 10 and below used to complain
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103131
Bug ID: 103131
Summary: -Wpedantic doesn't warn about extra semicolons anymore
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Comp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102984
Milian Wolff changed:
What|Removed |Added
Resolution|--- |FIXED
Status|WAITING
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102984
--- Comment #2 from Milian Wolff ---
Similarly:
std::vector locks(10); // works
std::vector locks(10, spinlock()); // doesn't work
This report here was motivated by stumbling over this report over at
https://github.com/efficient/libcuckoo/issu
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102984
Bug ID: 102984
Summary: strange alignment issues with
std::vector::emplace/push_back and overaligned type
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Seve
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101576
Bug ID: 101576
Summary: -fsaniitize=undefined silences clear nullptr
dereference warning at compile time
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Sever
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100878
Milian Wolff changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
Known to fail|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100878
Bug ID: 100878
Summary: enabling UBSAN leads to false positive `'this' pointer
is null` when casting lambda to function pointer
Product: gcc
Version: 11.1.0
Status: UNCO
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100705
Bug ID: 100705
Summary: warn about dead store
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: analyzer
Assig
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99386
--- Comment #4 from Milian Wolff ---
Ah, but LTO only helps with the variant that contains a single type. The
variant with two types remains very slow:
variant with single type:
```
Performance counter stats for './variant 1' (5 runs):
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99386
--- Comment #3 from Milian Wolff ---
Ah, seems like `-O2 -flto` fixes the issue for me, but how come clang can pull
this off without LTO?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99386
--- Comment #2 from Milian Wolff ---
in both cases libstdc++ is being used:
```
gcc:
linux-vdso.so.1 (0x7ffdc9f93000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x7f1449b2d000)
libm.so.6 => /usr/lib/libm.so.6 (0x0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99386
Bug ID: 99386
Summary: std::variant overhead much larger compared to clang
Product: gcc
Version: 10.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Compone
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97416
Bug ID: 97416
Summary: pointer-compare sanitizer + use-after-return: CHECK
failed:
/build/gcc/src/gcc/libsanitizer/asan/asan_thread.cpp:3
69 "((bottom)) != (0)" (0x
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97229
--- Comment #2 from Milian Wolff ---
As I said, >99% of the samples point to this backtrace:
```
__sanitizer_ptr_cmp
__asanCheckForInvalidPointerPair
__asanCheckForInvalidPointerPair
__asan::IsInvalidPointerPair
__asan::GetGlobalAddressInformat
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97229
Bug ID: 97229
Summary: pointer-compare sanitizer is very slow due to
__asan::IsAddressNearGlobal
Product: gcc
Version: 10.2.0
Status: UNCONFIRMED
Severity: norm
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