[Bug tree-optimization/117423] [13/14/15/16 Regression] union not written to with particular layout since r10-6321-g636e80eea24b78

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117423 --- Comment #21 from pipcet at protonmail dot com --- Created attachment 61848 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61848&action=edit patch documenting the problem This is obviously not something we should consider applying, but

[Bug libstdc++/121046] Asking is_constructible_v, NonTrivial*> is ill-formed

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121046 --- Comment #3 from Jonathan Wakely --- https://cplusplus.github.io/LWG/issue4294

[Bug ipa/120987] [13/14/15/16 regression] gdb build with lto triggers use after free since r12-5541-g2cadaa1f134bec

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120987 --- Comment #22 from Tom de Vries --- FYI, I've submitted a workaround for gdb that disables -fipa-modref for release gcc 12.0 - 16.0 ( https://sourceware.org/pipermail/gdb-patches/2025-July/219213.html ), assuming that his will be fixed in 16.1

[Bug target/120763] [meta-bug] Tracker for bugs to visit during weekly RISC-V meeting

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120763 Bug 120763 depends on bug 119267, which changed state. Bug 119267 Summary: RISC-V: gcc generates vsetivli with wrong LMUL with extended assembly https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119267 What|Removed

[Bug target/119267] RISC-V: gcc generates vsetivli with wrong LMUL with extended assembly

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119267 Jeffrey A. Law changed: What|Removed |Added Status|SUSPENDED |RESOLVED Resolution|---

[Bug tree-optimization/121048] New: [16 Regression] Recent vectorizer changes cause RISC-V testsuite regressions

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121048 Bug ID: 121048 Summary: [16 Regression] Recent vectorizer changes cause RISC-V testsuite regressions Product: gcc Version: unknown Status: UNCONFIRMED Severity

[Bug libstdc++/119742] [C++26] Implement P2697R1, Interfacing bitset with string_view

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119742 --- Comment #5 from Jonathan Wakely --- Also, do we want to make this change? --- a/libstdc++-v3/include/std/bitset +++ b/libstdc++-v3/include/std/bitset @@ -720,7 +720,10 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER namespace __bitset { -#if _

[Bug target/121047] New: Possible hardware issue with Raptor Lake processors for code that gcc may generate

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121047 Bug ID: 121047 Summary: Possible hardware issue with Raptor Lake processors for code that gcc may generate Product: gcc Version: 16.0 Status: UNCONFIRMED Sever

[Bug libstdc++/121046] Asking is_constructible_v, NonTrivial*> is ill-formed

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121046 Jonathan Wakely changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org Ev

[Bug libstdc++/121046] New: Asking is_constructible_v, NonTrivial*> is ill-formed

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121046 Bug ID: 121046 Summary: Asking is_constructible_v, NonTrivial*> is ill-formed Product: gcc Version: 15.1.0 Status: UNCONFIRMED Keywords: rejects-valid

[Bug libstdc++/121046] Asking is_constructible_v, NonTrivial*> is ill-formed

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121046 --- Comment #2 from Jonathan Wakely --- I think we should open a library issue to add a constraint to the standard.

[Bug target/121047] Possible hardware issue with Raptor Lake processors for code that gcc may generate

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121047 Andrew Pinski changed: What|Removed |Added Last reconfirmed||2025-07-12 Status|UNCONFIRM

[Bug fortran/121043] [15/16 Regression] Tests of OpenCoarray fail to pass, works on 14.3.1 20250701

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121043 --- Comment #2 from Jerry DeLisle --- While bisecting on gcc-15 branch I can not reproduce the OpenCoarray test failure. However, I do see the following on gcc-15 pulled this morning. Clean build. FAIL: gfortran.dg/goacc/parameter-3.f90 -O (

[Bug libstdc++/86015] Better handling of iterator distances

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86015 --- Comment #16 from Jonathan Wakely --- The standard relaxed the rules slightly for iterator difference types, to permit integer-class types to be used as difference types (see [iterator.concept.winc]). However, those integer-class types are imp

[Bug tree-optimization/121049] New: [16 regression] timezone-data miscompiled with -O3 -march=x86-64-v4 -mtune=znver4

=/usr/include/c++/v1 --enable-linker-build-id --with-build-config='bootstrap-O3 bootstrap-cet' Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 16.0.0 20250712 (experimental) f3186568d09c02a6d8915e43c0f5d7df704dfa0d (Gentoo Hardened 16.0. p, commit fe1f0199d8773ec7dffa4b7b7c26b1dd56cf6fd6)

[Bug tree-optimization/121049] [16 regression] timezone-data miscompiled with -O3 -march=x86-64-v4 -mtune=znver4

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121049 Sam James changed: What|Removed |Added Keywords||wrong-code Target Milestone|---

[Bug tree-optimization/121049] [16 regression] timezone-data miscompiled with -O3 -march=x86-64-v4 -mtune=znver4

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121049 --- Comment #2 from Sam James --- Created attachment 61850 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61850&action=edit localtime.c Reduced it a bit more.

[Bug tree-optimization/121049] [16 regression] timezone-data miscompiled with -O3 -march=x86-64-v4 -mtune=znver4

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121049 Andrew Pinski changed: What|Removed |Added Attachment #61852|0 |1 is obsolete|

[Bug libstdc++/88374] crash when stepping into for loop where iterators are created and compared with gdb

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88374 Jonathan Wakely changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|---

[Bug libstdc++/90919] vector::iterator is constructible from a pointer

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90919 Jonathan Wakely changed: What|Removed |Added Last reconfirmed|2020-01-28 00:00:00 |2025-7-12 --- Comment #2 from Jonathan

[Bug gcov-profile/121045] [16 Regression] FAIL: g++.dg/torture/pr58552.C caused by r16-2197-g385d9937f0e23c

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121045 H.J. Lu changed: What|Removed |Added Ever confirmed|0 |1 Status|UNCONFIRMED

[Bug rtl-optimization/87600] Fix for PRs 86939 and 87479 causes build issues for several targets

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87600 --- Comment #12 from GCC Commits --- The master branch has been updated by Xi Ruoyao : https://gcc.gnu.org/g:651845ceaae26a1b2c03f215e16e7e711dcea2cc commit r16-2214-g651845ceaae26a1b2c03f215e16e7e711dcea2cc Author: Xi Ruoyao Date: Tue Jul 8

[Bug rtl-optimization/87600] Fix for PRs 86939 and 87479 causes build issues for several targets

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87600 --- Comment #13 from GCC Commits --- The master branch has been updated by Xi Ruoyao : https://gcc.gnu.org/g:e6d3c88e7bb07f94308074f9751e4384a191e022 commit r16-2215-ge6d3c88e7bb07f94308074f9751e4384a191e022 Author: Xi Ruoyao Date: Tue Jul 8

[Bug rtl-optimization/120983] recog violates earlyclobber with user-defined hard register before reload (causing ICE on gcc.target/loongarch/bitwise-shift-reassoc-clobber.c)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120983 --- Comment #9 from GCC Commits --- The master branch has been updated by Xi Ruoyao : https://gcc.gnu.org/g:e6d3c88e7bb07f94308074f9751e4384a191e022 commit r16-2215-ge6d3c88e7bb07f94308074f9751e4384a191e022 Author: Xi Ruoyao Date: Tue Jul 8

[Bug rtl-optimization/120983] recog violates earlyclobber with user-defined hard register before reload (causing ICE on gcc.target/loongarch/bitwise-shift-reassoc-clobber.c)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120983 --- Comment #8 from GCC Commits --- The master branch has been updated by Xi Ruoyao : https://gcc.gnu.org/g:651845ceaae26a1b2c03f215e16e7e711dcea2cc commit r16-2214-g651845ceaae26a1b2c03f215e16e7e711dcea2cc Author: Xi Ruoyao Date: Tue Jul 8

[Bug libstdc++/117998] : views::counted misses difference casting for contiguous_iterator case

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117998 Jonathan Wakely changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed|

[Bug libstdc++/114477] The user-defined constructor of filter_view::iterator is not fully compliant with the standard

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114477 Jonathan Wakely changed: What|Removed |Added Status|UNCONFIRMED |SUSPENDED Last reconfirmed|

[Bug libstdc++/106610] elements_view::iterator::iterator_category invokes the operator*() && of the underlying iterator

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106610 --- Comment #1 from Jonathan Wakely --- Isn't this invalid because of [concepts.equality] p6? The indirectly_readable concept requires that *it works on a const lvalue, which means it has to behave the same on lvalues and rvalues or the same ty

[Bug libstdc++/102181] [DR 3197] std::advance and std::views::iota don't work

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102181 Jonathan Wakely changed: What|Removed |Added Status|SUSPENDED |ASSIGNED Target Milestone|---

[Bug tree-optimization/121049] [16 regression] timezone-data miscompiled with -O3 -march=x86-64-v4 -mtune=znver4

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121049 Andrew Pinski changed: What|Removed |Added Attachment #61851|0 |1 is obsolete|

[Bug tree-optimization/121049] [16 regression] timezone-data miscompiled with -O3 -march=x86-64-v4 -mtune=znver4

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121049 Andrew Pinski changed: What|Removed |Added Attachment #61850|0 |1 is obsolete|

[Bug tree-optimization/121049] [16 regression] timezone-data miscompiled with -O3 -march=x86-64-v4 -mtune=znver4

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121049 Andrew Pinski changed: What|Removed |Added Last reconfirmed||2025-07-13 Ever confirmed|0

[Bug debug/121045] [16 Regression] FAIL: g++.dg/torture/pr58552.C caused by r16-2197-g385d9937f0e23c

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121045 Andrew Pinski changed: What|Removed |Added Target Milestone|--- |16.0 Keywords|

[Bug tree-optimization/121049] [16 regression] timezone-data miscompiled with -O3 -march=x86-64-v4 -mtune=znver4

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121049 --- Comment #1 from Sam James --- May have overreduced, sec.

[Bug tree-optimization/121049] [16 regression] timezone-data miscompiled with -O3 -march=x86-64-v4 -mtune=znver4 since r16-2088-ge9079e4f43d135

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121049 Sam James changed: What|Removed |Added Keywords|needs-bisection | CC|