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• 2026/09/11 [Bug ipa/104325] [14/15/16/17 Regression] undefined reference to `virtual thunk to ...' since r9-4254-g12485662c00914ed jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug modula2/127204] regression IEEE vs IBM long double pollution seen in builtin tests in testsuite gaius at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c/119991] [14/15/16/17 Regression] internal compiler error: tree check: expected class 'type', have 'exceptional' (error_mark) in create_tmp_from_val, at gimplify.cc:621 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/124691] [14/15/16/17 Regression] ICE in duplicate_decls with friend function redeclaration in class template jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/105834] [13 Regression] Dead Code Elimination Regression at -O2 (trunk vs. 12.1.0) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/123598] [14/15/16/17 Regression] ICE in emit_swap_insn, at reg-stack.cc:850 with -O2 flag jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug ipa/119006] [14/15/16 Regression] ICF merging pointer to array types which don't have the same bounds since r11-5181-g0862d007b564ec jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/85099] [meta-bug] selective scheduling issues jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/114788] [14/15/16/17 Regression] ICE on valid code at -O{2,3} on x86_64-linux-gnu (during RTL pass: sched2): in move_exprs_to_boundary, at sel-sched.cc:5236 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/114374] [14/15/16/17 Regression] snprintf Wformat-truncation jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/102027] [14/15/16/17 Regression] ABI break when using vector type in function arg/return value jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/125502] [14 Regression] ICE at -O1 during RTL pass: expand jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/114243] [14/15/16/17 Regression][avr] -fsplit-wide-types bloats code by more than 50% jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/127339] GCC should allow using builtin type traits in mangled names nikolasklauser at berlin dot de via Gcc-bugs
• 2026/09/11 [Bug ipa/126268] [14/15/16/17 Regression] internal compiler error: in possible_polymorphic_call_targets with class size over 2^31 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/127339] GCC should allow using builtin type traits in mangled names pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/121230] [14/15 Regression] x86: Inefficient code generation with -m3dnow -msse since GCC 12 since r12-7612 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug ipa/105690] [14/15/16/17 regression] -Warray-bounds sensitive false positive with -O2 since r12-2591-g2e96b5f14e4025691b57d2301d71aa6092ed44bc jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/55004] [meta-bug] constexpr issues jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/120413] [14/15/16/17 Regression] C++ OpenMP 'target' SIGSEGV in 'gcc/cp/semantics.cc:finish_omp_target_clauses_r' jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/18501] [14/15/16/17 Regression] Missing 'used uninitialized' warning (CCP) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/95549] [14/15/16/17 regression] gnat1 doesn't link on AIX jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/120012] [14/15/16/17 Regression] P1008R1 causes tail padding reuse in C++20 mode jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/87902] [14/15/16/17 Regression] Shrink-wrapping multiple conditions since r9-3594 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/91954] [14/15/16/17 Regression] gcc.dg/vect/pr66142.c should not need early inlining to be vectorized since r10-3311-gff6686d2e5f797d6 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/109990] [14/15/16/17 Regression] Bogus -Wuse-after-free warning after realloc jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/95622] [14/15/16/17 Regression] force_output flag on a variable prevents optimization / regresses c-c++-common/goacc/kernels-alias-ipa-pta{-2,-4,}.c jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/81958] [14/15 Regression] spurious -Wmaybe-uninitialized warning in gcc-8, or with -O1 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug lto/113712] [14/15/16/17 Regression] lto crash: when building 641.leela_s peek with Example-gcc-linux-x86.cfg (SPEC2017 1.1.9) since r10-3311-gff6686d2e5f797 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/88780] [14/15/16/17 Regression] bogus -Wstringop-truncation for copying as many bytes from a string as its length jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/120258] [14/15 regression] wrong code at -O{s,1,2,3} on x86_64-linux-gnu jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c/121938] [14/15/16/17 Regression] x86-32: enum with big value gets too small size (disagreement with clang) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/107211] [14/15/16/17 Regression] GCC compiles invalid use of non static member function in noexcept operator jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug driver/25208] [14/15/16/17 Regression] two outputs and -MMD igodard at pacbell dot net via Gcc-bugs
• 2026/09/11 [Bug c++/120275] [14/15/16/17 Regression] ICE in write_type at cp/mangle.cc:2687 when using decltype(auto) with initializer list since 11.3 since r12-6008-g06d5dcef72542b jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126332] -ftracer makes it harder to do ifcvt (like path splitting) ktkachov at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/127297] [c++26][contracts] the postcondition const-parameter diagnostic is emitted twice for a non-template function zheng.xianyuwang at gmail dot com via Gcc-bugs
• 2026/09/11 [Bug c++/78825] [14/15/16/17 Regression] missing error for template partial specialization using template alias type jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/100378] [14/15/16/17 Regression] arm64: lsl + asr used instead of sxth jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/59498] [DR 1430][14/15/16/17 Regression] Pack expansion error in template alias jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/67194] [14/15/16/17 Regression] Missed jump thread and false positive from -Wuninitialized jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug preprocessor/100904] [14/15/16/17 Regression] Wrong line location #include error "No such file or directory" – line + 1 [traditional mode as used by gfortran] jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/108803] [13 Regression] wrong code for 128bit rotate on aarch64-unknown-linux-gnu with -Og jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/100829] [14/15/16/17 Regression] ICE with type that can't be determined since r8-6321-gd78201d30c7c5a8f jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/101109] [14/15/16/17 Regression] ICE with function in the .vtable_map_vars section jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/97323] [14 Regression] ICE 'verify_type' failed on arm-linux-gnueabihf jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/105988] [14/15/16/17 Regression] ICE in linemap_ordinary_map_lookup, at libcpp/line-map.cc:1064 since r6-4873-gebedc9a3414d8422 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/24434] [14/15/16/17 Regression] get_varargs_alias_set returns 0 always jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/20617] [14/15/16/17 Regression] shared SH libgcc is exporting too many symbols jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126585] [14/15/16/17 Regression] ICE in vect_get_loop_mask with SVE jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/125090] [14/15/16/17 Regression] internal compiler error: 'verify_gimple' failed with global structured bindings and references jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/127256] [16 regression] libjxl build ICEs in simplify_gen_subreg_concatn, at lower-subreg.cc:744 rdapp at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/127256] [16 regression] libjxl build ICEs in simplify_gen_subreg_concatn, at lower-subreg.cc:744 cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug fortran/125458] [14/15/16/17 Regression] Constant integer overflow not detected jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/110620] [14/15/16/17 regression] spurious array-bounds jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug analyzer/110285] [14/15/16/17 Regression] -Wanalyzer-infinite-recursion false positive involving floating-point values jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug ipa/103819] [14/15/16/17 Regression] ICE in redirect_callee, at cgraph.c:1389 with __attribute__((flatten)), comdat and aliases and -O2 since r11-7940-ge7fd3b783238d034 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/102261] [14/15/16/17 Regression] ICE: Segmentation fault (in build_this_conversion) since r12-3346-g47543e5f9d1fc502 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/110829] [14/15/16/17 Regression] FAIL: gcc.dg/pr56837.c scan-tree-dump-times optimized "memset ..c, 68, 16384.;" 1 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/100378] [14/15/16/17 Regression] arm64: lsl + asr used instead of sxth rearnsha at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/123488] [14/15/16/17 Regression] ICE: in gimplify_expr, at gimplify.cc during explicit destructor call of unrelated template in a template function jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/123805] [14/15/16/17 Regression] [c++20] array initialization with Parentheses from an array with the same type (and bounds) not declaying to void* too jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/127336] wrong code with __atomic_add_fetch() at -O1 and above on x86 ubizjak at gmail dot com via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/123020] [14/15/16/17 Regression] Equivalent ternary and if produce different loop (extra compare in g()) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/123495] [14/15/16 Regression] ICE: unexpected expression ‘(int (*)())(0)’ of kind cast_expr in cxx_eval_constant_expression within template during nodiscard check since r14-4793 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug libstdc++/122576] [14/15/16/17 Regression] __is_fast_hash<hash<variant<type...>>> always true since r8-3324 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/120177] [13 Regression] ICE in lra_constraints, "maximum number of generated reload insns" with inline assembly using x87 instructions (finitq, fldq, fst) — 13.3 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/124146] [14/15/16 Regression] ICE in aarch64_function_arg_alignment since r13-7167 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/124499] [14/15/16/17 Regression] ICE tree check: expected record_type or union_type or qual_union_type, have template_type_parm in lookup_using_decl, at cp/name-lookup.cc:6269 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/122681] [14/15/16/17 Regression] ICE when invoking explicit destructor on a non-captured constexpr variable within a lambda jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/122484] [14/15/16/17 regression] ICE on missing constexpr (unexpected expression 'Deg' of kind template_parm_index) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/126579] [14/15/16/17 Regression] non-call must not throw (REG_EH_REGION) is lost in during cselim/phiopt and ifcvt and sink jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/125845] [C++26] P3726R2, Adjustments to Union Lifetime Rules cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/123685] [14/15/16/17 Regression] ICE (Segfault) in dependent_local_decl_p with local function call inside nested generic lambdas jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/118897] [14/15/16/17 Regression] ICE: tree check: expected class 'type', have 'exceptional' (error_mark) in categorize_ctor_elements_1, at expr.cc:7247 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/119654] [14/15/16/17 Regression] name lookup after `typename` incorrectly ignores non-type non-namespace names jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/119033] [14/15/16/17 regression] Unsafe FRE of pointer assignment since r13-469-g9a53101caadae1 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/105653] [14/15/16/17 Regression] '-fcompare-debug' failure w/ -O2 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/120756] [14 Regression] internal compiler error: error reporting routines re-entered with [[deprecated]] jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/115869] [14/15/16/17 Regression] Wrong constant evaluation with vector of struct due to loop interchange since r13-1268-g8c99e307b20c502e55c425897fb3884ba8f05882 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/118598] [14/15/16/17 Regression] Shrink-wrapping multiple conditions jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug objc/119117] [14/15/16/17 Regression] instance variables sometimes causes unknown type name jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/105136] [14 regression] Missed optimization regression with 32-bit adds and shifts jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/121133] [14 Regression] __extension__ no longer silences the pedwarn for long long jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/106880] [14/15/16/17 Regression] "error: use of deleted function" printed twice jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/121704] [14/15 regression] wrong code at -O3 with "-fno-gcse -fno-ipa-cp" on x86_64-linux-gnu jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/91846] [14/15/16/17 Regression] ICE in use_thunk, at cp/method.c:316 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug debug/92387] [13 Regression] gcc generates wrong debug information at -O1 since r10-1907-ga20f263ba1a76a jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug gcov-profile/105238] [14/15/16/17 regression] using -fprofile-dir: gcno files not ccache cachable anymore / gcovr report broken jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/117584] PowerPC ABI for BitInt needs to be done cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug debug/110885] [14/15 Regression] "undefined reference" when using both "-fdebug-types-section" and "-gsplit-dwarf" and inline function as a template argument jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/113525] [14 Regression] GCC does not recognize "-fdump-rtl-sibling" command line option jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/123083] [14/15 regression] ICE on auto operator returning a range view transform jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/24012] [14/15/16/17 regression] #define _POSIX_C_SOURCE breaks #include <iostream> jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c/109233] [14/15/16/17 Regression] warning: array subscript 5 is above array bounds of ‘struct tg3_napi[5]’ since r12-2591 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/108499] [14 regression] False positive -Warray-bounds jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/113714] [14/15/16/17 Regression] Missed optimization for redundancy computation elimination: -(w+d-x)-x => -(w+d) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/127336] wrong code with __atomic_add_fetch() at -O1 and above on x86 ubizjak at gmail dot com via Gcc-bugs
• 2026/09/11 [Bug target/108495] [14/15/16/17 Regression] aarch64 ICE with __builtin_aarch64_rndr jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug ipa/102982] [14/15/16/17 Regression] Dead Code Elimination Regression at -O3 (trunk vs 11.2.0) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/126772] [14/15/16/17 Regression] ICE: in trunc_int_for_mode, at explow.cc:59 for fixed-point negative shift jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/120532] [14/15/16/17 Regression] diagnostic_context::diagnostic_impl ICE in refwrap.h jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/127041] [14/15/16/17 Regression] ICE in cp_lexer_handle_early_pragma with malformed _Pragma jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/125771] [14/15/16/17 Regression] Double destructor call during aggregate initialization with designated initializers when an exception is thrown. jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/126463] [15/16/17 Regression] ICE at -O1 on aarch64 during RTL pass: final rearnsha at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/125156] [14 Regression] ICE at -O3 during GIMPLE pass: fre jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/104396] [14/15/16/17 Regression] Invalid SIMD intriniscs accepted at -O1 and above after r11-6794-g04b472ad0e1dc93aba jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/118443] [Meta bug] Bugs triggered by and blocking more smtgcc testing jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/123664] [14/15/16/17 Regression] ICE in fold_convert_loc, at fold-const.cc when constexpr-initializing pointer-to-member-function in a template instantiation since r8-6320-g7c719d08494168 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/106559] [14/15/16/17 Regression] Spurious warning -Wformat-truncation (regression from 9) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/110317] [14 Regression] ICE at -O2 and -O3 with "-fno-tree-pre -fno-tree-dce -fno-tree-dse -fselective-scheduling2": in move_exprs_to_boundary, at sel-sched.cc:5228 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/98973] [14/15/16/17 regression] Wrong code with gcse store motion pass jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/110177] [14/15/16/17 Regression] Missed Dead Code Elimination when using __builtin_unreachable since r12-2305-g398572c1544 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/99919] [14/15/16/17 Regression] bogus -Wmaybe-uninitialized with a _Bool bit-field jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/96900] [14/15/16/17 Regression] bogus -Warray-bounds on strlen with valid pointer obtained from just-past-the-end jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/120366] [14/15/16/17 Regression] __PRETTY_FUNCTION__ is sometimes an array of unknown bound inside double template jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/126463] [15/16/17 Regression] ICE at -O1 on aarch64 during RTL pass: final cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/121405] [14/15 Regression] Another missed VN via a copy (but via an int copy) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/123363] [14/15/16/17 Regression] ICE: Segmentation fault in finish_call_expr during template argument parsing with invalid nested template-id jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c/92773] [14/15/16/17 Regression] GCC compilation with big array / header is infinite jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/127341] New: [modules] vtable not emitted for extern "C++" class when an imported module forward-declares it samuelgardner101 at gmail dot com via Gcc-bugs
• 2026/09/11 [Bug preprocessor/107448] [14/15/16/17 Regression] GCC no longer diagnoses missing input file with -MG since r11-6855-g4804de453e7f5f90 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/108360] [14/15/16/17 Regression] Dead Code Elimination Regression at -Os since r13-2048-g418b71c0d535bf jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/125487] [14/15/16/17 Regression] ICE in DECL_FUNCTION_CODE, at tree.h:4484 on sizeof ternary involving __builtin_is_constant_evaluated() jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/106026] [14/15/16/17 Regression] ICE: error reporting routines re-entered. jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/126463] [15/16/17 Regression] ICE at -O1 on aarch64 during RTL pass: final cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug ipa/127160] [14/15/16/17 Regression] wrong code at -O2 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/124945] [14/15/16/17 regression] false std::sort warning: array subscript 17 is outside array bounds of 'S [1]' jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/125091] [14/15/16/17 regression] internal compiler error: in get_partitioning_class, at symtab.cc:2203 with -flto and anonymous global structured bindings jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/102214] [14/15/16/17 Regression] ICE when compiling local class with -fno-weak jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/127096] [14/15/16/17 Regression] Wrong decltype((S::x)) in const member function of unrelated class A jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/120689] [14/15 Regression] Codegen optimization regression passing struct in register in gcc 10+ on x86-64 since r10-577 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/120667] [14 Regression] internal compiler error: in cxx_eval_constant_expression, at cp/constexpr.cc:7908 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/124999] [14/15/16/17 Regression] ICE: auto deduction with alias template using non-final parameter pack jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/125786] [14 Regression] wrong code (SIGFPE) at -O2 on x86_64-linux-gnu jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/113265] [14/15/16/17 Regression] Missed optimization for redundancy computation elimination may be due to constant propagation about 0 too late jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/127310] [17 Regression] Segfault during vectorisation of mixed-sign dot-product since r17-3693 cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/86960] [14 Regression] ICE on specialization of member template with fixed parameter pack jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/99590] [14/15/16/17 Regression] ICE when pack expansion with lambda jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/127022] [14/15/16/17 Regression] ICE on valid code at -O{2, 3} with "-fno-dce -fsched2-use-superblocks" on x86_64-linux-gnu: in begin_move_insn, at sched-ebb.cc:196 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/120311] [14/15/16/17 Regression] internal compiler error: in lookup_base, at cp/search.cc:251 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/126838] [14/15/16/17 Regression] --disable-checking with non GCC is still broken since r0-114131 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/126589] [14/15/16 Regression] Complex-mul vectorisation not honoring signed zeros jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126925] [14/15 Regression] ICE at -O3 on x86_64-linux-gnu: Segmentation fault during GIMPLE pass: ivopts jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/126521] [14/15/16/17 Regression] Wrong RTL ifcvt with abs jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126650] [14 Regression] Wrong code at -O2/3/s on x86_64-pc-linux-gnu jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/120539] [14/15/16/17 Regression] Segmentation fault raw using friend since 11.3 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/125718] [14/15/16/17 Regression] ICE in block_label / patch_jump_insn (cfgrtl.cc) with -O3 -fPIC -fnon-call-exceptions -fno-strict-aliasing on x86_64 (C++) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/121083] [14/15/16/17 Regression] internal compiler error: in process_init_constructor_record, at cp/typeck2.cc:1796 with -std=c++20 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/125477] [14 Regression] ICE on x86_64-linux-gnu: Segmentation fault during GIMPLE pass: vect with asm goto at -O3 since r10-1057 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/120534] [14/15/16/17 Regression] internal compiler error: in adjust_temp_type, at cp/constexpr.cc:1789 since gcc 5.1 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/125326] [14/15/16/17 Regression] ICE in alias_ctad_tweaks for alias template CTAD after invalid constructor parameter pack jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug driver/123558] [14/15/16/17 Regression] -Fdir option should be darwin only jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug ipa/123227] [14/15/16/17 regression] ICF forgets to compare nonnull attribute (and thus member and non-member functions) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/120427] [14 Regression] "and $0,mem" is generated without -Oz since r12-6106-gef26c151c14a87 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug libstdc++/120407] [14/15/16/17 Regression] Binary size manifold for static linked MinGW target (e.g. std::__throw_system_error) jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/120392] [14/15/16/17 Regression] ICE with VLA typedef and function splitting/eiline jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126562] [14/15/16/17 Regression] Invalid pow (x, 0.5) -> sqrt transformation when signed zeros or infinities are required jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126473] [14/15/16/17 Regression] Wrong fold of signbit(x) -> x<0 for NaNs with -fno-signed-zeros jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/124820] [14/15/16/17 Regression] fma gives incorrect result w.r.t. sign of zero jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c/123466] [14/15/16/17 Regression] ICE in get_unwidened after redeclared error jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug ipa/127113] [14/15/16/17 Regression] wrong code at -O2 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/127000] [14/15/16 Regression] ICE at -O2 during GIMPLE pass: fre jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/127016] [14/15/16/17 Regression] Rejects valid assignment from {} to aggregate with array member NSDMI jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/123298] [14 Regression] wrong code at -O2/-O3 since r9-2635 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126593] [14/15/16 Regression] Wrong code with complex mul and compatible_complex_nodes_p jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126570] [14/15/16/17 Regression] Wrong code in phiprop and scalar_storage_order jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126545] [14/15/16/17 Regression] Wrong code with ranger and FP comparisons and NaN handling since r13-1933 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/117364] [14 Regression] [coroutines] Use of <retval> triggers an ICE on sparc jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/127010] [14/15 Regression] ICE during RTL expand of switch over int; GCC 13+ runs out of memory jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126592] [14/15/16 Regression] Wrong code with compex mul vectorisation and is_linear_load_p jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c/126948] [14/15/16/17 Regression] Error on goto label after pragma directive in if statement jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126563] [14/15/16/17 Regression] Wrong code with ifcombine and recognize_bits_test jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug sanitizer/126511] [14/15/16/17 Regression] ICE verify_flow_info failed with sanitize=null since r13-1754 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/123249] [14/15/16/17 Regression] declaration of template parameter 'class V' with different constraints jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/125863] [14/15/16/17 Regression] False positive -Warray-bounds in context of -O3 + __builtin_unreachable() jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/106902] [14/15/16/17 Regression] Program compiled with -O3 -mfma produces different result jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/106570] [14/15/16/17 Regression] DCE sometimes fails with depending if statements since r12-2305-g398572c1544d8b75 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/124517] [14/15/16/17 Regression] ICE: in update_binding, at cp/name-lookup.cc:3099 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug target/124266] [14/15/16/17 Regression] Incorrect unwind info for vector math functions jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126467] [14/15/16 Regression] wrong code with folding 0.0 - x jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126475] [14/15/16/17 Regression] x * { 0.0f, 1.0f, ... } must not become x & mask when NaNs/Infs are honoured since r9-5228 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/125181] [14/15/16/17 Regression] variadic template function not allowing for function pointer which has a toplevel const argument to match with non-toplevel const argument jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/125777] [14/15/16/17 Regression] false positive -Wmaybe-uninitialized when using std::from_chars and -Os jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/124199] [14/15/16/17 Regression] Declaration conditions check for invalid array declarator at the wrong location jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug testsuite/124064] [14 Regression] g++.target/arm/bfloat_cpp_typecheck.C xpass'es jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug ipa/56139] [14/15/16/17 Regression] unmodified static data could go in .rodata, not .data jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c/69602] [14/15/16/17 Regression] over-ambitious logical-op warning on EAGAIN vs EWOULDBLOCK jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/127262] [14/15/16 Regression] ICE at -O1 -Wall jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/125211] [14/15/16/17 Regression] ICE with an anonymous union in a generic lambda defined as part of a templated variable jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126536] [14/15/16/17 Regression] ICE with -funswitch-loops jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/125953] [14 Regression] vect_recog_divmod_pattern uses ranger on pattern stmts jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug rtl-optimization/125876] [14/15/16/17 Regression] x86: register-source vmovddup spilled to the stack instead of using the register form jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug c++/126323] [14/15/16/17 Regression] ICE when parsing #pragma GCC ivdep or unroll(0) or novector inside a class definition before a for statement jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/124986] [14/15 Regression] -Warray-bounds and -Wstringop-overread false positives jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126247] [14/15/16/17 Regression] ifcombine removes trapping comparsion incorrectly jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126316] [14/15/16/17 Regression] Bogus -Wdangling-pointer on variable length arrays in different scopes in -O2 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug middle-end/126153] [14/15/16 Regression] [csmith] runtime crash with -O3 -ftrivial-auto-var-init=zero jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug analyzer/124110] [14/15/16/17 Regression] -Wanalyzer-infinite-recursion false positive involving uint8_t values jakub at gcc dot gnu.org via Gcc-bugs
• 2026/09/11 [Bug tree-optimization/126225] [14/15 Regression] Wrong code at -O2 due to incorrect SLP IV reuse (r11-4714) jakub at gcc dot gnu.org via Gcc-bugs

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