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• 2026/10/13 [Bug tree-optimization/127858] [14/15/16 Regression] wrong code at -O2: LIM hoists load past aliasing store after merging a COMPONENT_REF with an equivalent MEM_REF rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug middle-end/127850] [OpenMP] Handle user/manual-vectorization with SIMD trait in 'declare variant' burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127858] [14/15/16/17 Regression] wrong code at -O2: LIM hoists load past aliasing store after merging a COMPONENT_REF with an equivalent MEM_REF cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127874] New: [15/16/17 Regression] ICE: in single_succ_edge, at basic-block.h:327 with noreturn memset removed by DSE as redundant store since r15-5336 kyuwoncho18 at gmail dot com via Gcc-bugs
• 2026/10/13 [Bug target/127843] [17 regression] ICE when building libgcc2 for hppa (RTL flag check: CONSTANT_POOL_ADDRESS_P used with unexpected rtx code 'const_double' in pa_legitimate_constant_p, at config/pa/pa.cc:11030) danglin at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug target/127843] [17 regression] ICE when building libgcc2 for hppa (RTL flag check: CONSTANT_POOL_ADDRESS_P used with unexpected rtx code 'const_double' in pa_legitimate_constant_p, at config/pa/pa.cc:11030) cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug libstdc++/127757] [16/17 Regression] atomic<T>::notify_all() can miss a futex waiter: waiter-count check is not ordered after the caller's store cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug target/127778] [16/17 Regression] RISC-V: Missed optimization for non-stack base + [2048, 4094] after PR120811 law at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug c++/126811] [14/15/16/17 Regression] c++: ICE in tsubst when a constexpr init contains an NSDMI dcb314 at hotmail dot com via Gcc-bugs
• 2026/10/13 [Bug target/127778] [16/17 Regression] RISC-V: Missed optimization for non-stack base + [2048, 4094] after PR120811 cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127452] [17 Regression] forwprop generates 128bit multiplication even if not supported by the target since r17-3437 rguenther at suse dot de via Gcc-bugs
• 2026/10/13 [Bug rtl-optimization/127809] [MIPS/SPARC] DEBUG_INSN stops delete_related_insns before a BARRIER cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug rtl-optimization/127808] [SPARC] DEBUG_INSN hides BARRIER in relax_delay_slots and changes delay-slot decisions law at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug rtl-optimization/127852] [16/17 Regression] simplify-rtx/combine can merge equal volatile accesses cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127853] x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug rtl-optimization/127808] [SPARC] DEBUG_INSN hides BARRIER in relax_delay_slots and changes delay-slot decisions cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127452] [17 Regression] forwprop generates 128bit multiplication even if not supported by the target since r17-3437 vekumar at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug libgomp/41418] Can't build libgomp without --enable-languages=fortran lh_mouse at 126 dot com via Gcc-bugs
• 2026/10/13 [Bug target/127565] usmul<mode> should be defined eikansh.gupta at oss dot qualcomm.com via Gcc-bugs
• 2026/10/13 [Bug rtl-optimization/127870] Reassociation of __int128 sum costs a callee-saved register on x86-64 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug fortran/82173] [meta-bug] [PDT] Parameterized derived type errors cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug fortran/82173] [meta-bug] [PDT] Parameterized derived type errors cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127510] GCC vectorizes "std::for_each_n" loop taking on random access iterator with more than one pointers as uncounted loop raghesh.aloor at amd dot com via Gcc-bugs
• 2026/10/13 [Bug rtl-optimization/127852] [16/17 Regression] simplify-rtx/combine can merge equal volatile accesses vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug rtl-optimization/127852] [16/17 Regression] simplify-rtx/combine can merge equal volatile accesses roger at nextmovesoftware dot com via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127705] [17 Regression] valgrind error in function vect_schedule_scc, line 12809 dcb314 at hotmail dot com via Gcc-bugs
• 2026/10/13 [Bug fortran/82173] [meta-bug] [PDT] Parameterized derived type errors cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug fortran/82173] [meta-bug] [PDT] Parameterized derived type errors cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug target/127872] storing a signaling NaN constant uses flds/fstps and quietens it with -mfpmath=387 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug target/127872] New: storing a signaling NaN constant uses flds/fstps and quietens it with -mfpmath=387 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug middle-end/127848] Incorrect tail call optimization with _BitInt return types cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127871] New: FRE replaces x87 load from double with VIEW_CONVERT from integer, RTL expansion turns VIEW_CONVERT_EXPR into mutating x87 load rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug rtl-optimization/127851] [16/17 Regression] combine can reorder two volatile reads by folding them into one insn vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug rtl-optimization/127852] [16/17 Regression] simplify-rtx/combine can merge equal volatile accesses vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127870] New: Reassociation of __int128 sum costs a callee-saved register on x86-64 jdh863 at gmail dot com via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127858] [14/15/16/17 Regression] wrong code at -O2: LIM hoists load past aliasing store after merging a COMPONENT_REF with an equivalent MEM_REF rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/127775] [17 Regression] 7% slowdown of SPEC 2017 x264_r on Zen3 with PGO since r17-4901-gf9b60a8bd7569f pfustc at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/126225] [14/15 Regression] Wrong code at -O2 due to incorrect SLP IV reuse (r11-4714) rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/13 [Bug tree-optimization/126225] [14/15 Regression] Wrong code at -O2 due to incorrect SLP IV reuse (r11-4714) haochen.jiang at intel dot com via Gcc-bugs
• 2026/10/13 [Bug rtl-optimization/127852] [16/17 Regression] simplify-rtx/combine can merge equal volatile accesses roger at nextmovesoftware dot com via Gcc-bugs
• 2026/10/13 [Bug target/127773] [x86] vzeroupper missing before call to IPA-RA-known non-AVX callee, causing SSE/AVX transition assists liuhongt at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127869] bitreverse detection from array pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127869] New: bitreverse detection from array pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/121688] F16C/AVX512F cvtph2ps and cvtps2ph not used on __builtin_convertvector cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127851] [16/17 Regression] combine can reorder two volatile reads by folding them into one insn ubizjak at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug target/127773] [x86] vzeroupper missing before call to IPA-RA-known non-AVX callee, causing SSE/AVX transition assists michiel.van.slobbe at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug middle-end/127850] [OpenMP] Handle user/manual-vectorization with SIMD trait in 'declare variant' burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127773] [x86] vzeroupper missing before call to IPA-RA-known non-AVX callee, causing SSE/AVX transition assists michiel.van.slobbe at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug target/127773] [x86] vzeroupper missing before call to IPA-RA-known non-AVX callee, causing SSE/AVX transition assists michiel.van.slobbe at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug c++/127868] New: Unbounded template recursion in C++ frontend causing SIGTERM daniel-dev at hotmail dot de via Gcc-bugs
• 2026/10/12 [Bug target/127867] New: [m68k] -m68020-60 or -m68020-40 with -mcpu=/-march= (or -m68040, -m68060, ...) passes the assembler a single bogus option such as "-m68040-mcpu=68040" davidrogers at me dot com via Gcc-bugs
• 2026/10/12 [Bug target/127844] GCC produces less efficient code than LLVM for integer division pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127855] [14/15/16/16 Regression] CTAD through an alias of an alias whose target is `const Y<T>`: pedwarn, then ICE in `set_constraints` with -std=gnu++17 pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127865] [17 Regression] RISC-V: redundant sext.w after AOP patches law at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127853] x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127847] rtl hoist pass can move expr reading asm goto outputs before asm goto vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127865] [17 Regression] RISC-V: redundant sext.w after AOP patches pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127267] [17 Regression] AOP changes causing execution failure and poor code on iq2000-elf law at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127813] Missed opportunity for czero on RISC-V (and csel for aarch64 and cmov for x86) cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127851] [16/17 Regression] combine can reorder two volatile reads by folding them into one insn vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug middle-end/119941] -Warray-bounds warning in adjust_offset_for_component_ref when building for bpf-unknown-none sjames at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds sjames at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug fortran/127866] New: [OpenMP] Mapping derived type allocatable component with additional clause triggers ICE utheriwagura at proton dot me via Gcc-bugs
• 2026/10/12 Bodyguard chinaytjtb
• 2026/10/12 [Bug tree-optimization/127382] [16/17 Regression] ICE in range_of_cond_expr during vectorization with _BitInt liuhongt at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127382] [16/17 Regression] ICE in range_of_cond_expr during vectorization with _BitInt liuhongt at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127382] [16/17 Regression] ICE in range_of_cond_expr during vectorization with _BitInt cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/126723] aarch64-darwin: temporary L.str labels miscompile literals after a weak_definition oliver.rosten at googlemail dot com via Gcc-bugs
• 2026/10/12 [Bug target/127865] New: RISC-V: redundant sext.w after AOP patches anton at ozlabs dot org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127851] [16/17 Regression] combine can reorder two volatile reads by folding them into one insn hjl.tools at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug analyzer/106283] RFE: analyzer handling of close_range and closefrom dmalcolm at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127811] [17 Regression] ICE in vect_schedule_slp_node cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/120763] [meta-bug] Tracker for bugs to visit during weekly RISC-V meeting rdapp at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127838] [15/16/17 Regression] Incorrect vectorization with -march=x86-64-v2 or aarch64 rsandifo at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127443] [17 Regression] ICE: in simplify_subreg_concatn, at lower-subreg.cc:678 with -O -g rdapp at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127787] [17 Regression] ICE in module.cc after r17-4959-g13920d004da35b cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127853] x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127841] m68k: subdi_dishl32 emits memory-to-memory sub.l bernie at codewiz dot org via Gcc-bugs
• 2026/10/12 [Bug c++/127857] New: [GCC C++ contracts] a contract condition that spans a whitespace-only line: ICE in `char_span::subspan` (file-cache.h:52) from `get_source_text_between` 0599jiangyc at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug c++/126680] ICE: in set_decl_context_in_fn, at cp/name-lookup.cc:3675 mpolacek at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127734] [OpenMP] 'simd' 'construct' trait selector ignored in 'declare variant' burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug middle-end/127860] expand_vec_perm_const reduces the selector by the result length for a VEC_PERM_EXPR with wider inputs (latent wrong code) igor at tachyum dot com via Gcc-bugs
• 2026/10/12 [Bug middle-end/127850] [OpenMP] Handle user/manual-vectorization with SIMD trait in 'declare variant' burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127841] m68k: subdi_dishl32 emits memory-to-memory sub.l schwab--- via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127858] [14/15/16/17 Regression] wrong code at -O2: LIM hoists load past aliasing store after merging a COMPONENT_REF with an equivalent MEM_REF pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127851] New: combine can reorder two volatile reads by folding them into one insn vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127382] [16/17 Regression] ICE in range_of_cond_expr during vectorization with _BitInt cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug ada/114065] GNAT build with -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64 fails on 32-bit dave.anglin at bell dot net via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127853] x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127814] [14/15/16/17 Regression] wrong code at -O3 with -fno-vect-cost-model on x86_64-linux-gnu cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127485] VRP misses that if the difference between two values is non-zero then the two values are different pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127847] rtl hoist pass can move expr reading asm goto outputs before asm goto pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug middle-end/127860] expand_vec_perm_const reduces the selector by the result length for a VEC_PERM_EXPR with wider inputs (latent wrong code) igor at tachyum dot com via Gcc-bugs
• 2026/10/12 [Bug fortran/127845] FINDLOC with DIM and MASK returns wrong results anlauf at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127853] x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug algol68/127797] [17 Regression] internal compiler error: in fold_convert_loc, at fold-const.cc:2620 tschwinge at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127854] New: PRU repeat-loop transformation treats debug instructions as executable neighbours yqtian668 at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug testsuite/125060] PowerPC tests fold-vec-cmp-int128.c and pr103316.c started failing after r16-286-gd84fbc516ea57d cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails ian at airs dot com via Gcc-bugs
• 2026/10/12 [Bug fortran/127845] New: FINDLOC with DIM and MASK returns wrong results federico.perini at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug c++/127734] [OpenMP] 'simd' 'construct' trait selector ignored in 'declare variant' burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127805] [17 Regression] ICE in in do_rpo_vn_1, at tree-ssa-sccvn.cc:8962 (since r17-5018-g50b1269d94bac5) burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/85316] [meta-bug] VRP range propagation missed cases pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127864] umax(x, 1) could be better jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug middle-end/127848] New: Incorrect tail call optimization with _BitInt return types jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127856] New: [GCC C++26 reflection] class with a `std::meta::info` member and a default member initializer, instantiated as a local at `-O1`+: ICE in `type_contains_placeholder_1` (tree.cc:4463) during `ealias`/`esra` 0599jiangyc at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug c++/126680] ICE: in set_decl_context_in_fn, at cp/name-lookup.cc:3675 mpolacek at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127856] [17 Regression] class with a `std::meta::info` member and a default member initializer, instantiated as a local at `-O1`+: ICE in `type_contains_placeholder_1` (tree.cc:4463) during `ealias`/`esra` since r17-4197 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127864] umax(x, 1) could be better pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127362] More masking cases that can be improved on RISC-V Milan.Tripkovic--- via Gcc-bugs
• 2026/10/12 [Bug testsuite/127148] rs6000: vsx_mask-extract-runnable.c fails on power10 BE cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127843] [17 regression] ICE when building libgcc2 for hppa (RTL flag check: CONSTANT_POOL_ADDRESS_P used with unexpected rtx code 'const_double' in pa_legitimate_constant_p, at config/pa/pa.cc:11030) danglin at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127267] [17 Regression] AOP changes causing execution failure and poor code on iq2000-elf roger at nextmovesoftware dot com via Gcc-bugs
• 2026/10/12 [Bug target/127864] New: i386: Missed optimization for val ?: 1 pali at kernel dot org via Gcc-bugs
• 2026/10/12 [Bug libstdc++/127540] std::swap(i, i) with debug iterators aborts redi at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug middle-end/124380] False-positive -Wuninitialized warning when using -ftrivial-auto-var-init and reference binding to temporary that is extended oliver.rosten at googlemail dot com via Gcc-bugs
• 2026/10/12 [Bug libfortran/127846] MINLOC/MAXLOC with MASK and BACK=.true. ignore the mask anlauf at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/126680] ICE: in set_decl_context_in_fn, at cp/name-lookup.cc:3675 mpolacek at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug analyzer/125265] FAIL: gcc.dg/analyzer/mkostemp-1.c test for warnings dmalcolm at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/126723] aarch64-darwin: temporary L.str labels miscompile literals after a weak_definition cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug libfortran/127846] MINLOC/MAXLOC with MASK and BACK=.true. ignore the mask anlauf at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/126723] aarch64-darwin: temporary L.str labels miscompile literals after a weak_definition iains at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127780] [C++23] Using declaration in if immediately followed by colon incorrectly accepted mpolacek at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127780] [C++23] Using declaration in if immediately followed by colon incorrectly accepted cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails pkubaj at anongoth dot pl via Gcc-bugs
• 2026/10/12 [Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails pkubaj at anongoth dot pl via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127863] New: [OpenACC] ICE: tree check: expected ssa_name, have integer_cst in find_reduc_addr, at tree-parloops.cc:3275 dohanam2 at illinois dot edu via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127824] fails to vectorize bounded double comparison with and reduction manu at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127851] [16/17 Regression] combine can reorder two volatile reads by folding them into one insn pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug libfortran/127837] caf_shmem: END TEAM does not report stopped or failed images jvdelisle at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug middle-end/127862] VEC_PERM_EXPR merge patterns mishandle permutes whose inputs and result differ in length (ICE with svld1rq + svrev, wrong code) igor at tachyum dot com via Gcc-bugs
• 2026/10/12 [Bug middle-end/127862] New: VEC_PERM_EXPR merge patterns mishandle permutes whose inputs and result differ in length (ICE with svld1rq + svrev, wrong code) igor at tachyum dot com via Gcc-bugs
• 2026/10/12 [Bug libstdc++/127540] std::swap(i, i) with debug iterators aborts fdumont at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/126608] mingw: Remove outdated /mingw stuff cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127485] VRP misses that if the difference between two values is non-zero then the two values are different cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127852] [16/17 Regression] simplify-rtx/combine can merge equal volatile accesses pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127773] [x86] vzeroupper missing before call to IPA-RA-known non-AVX callee, causing SSE/AVX transition assists liuhongt at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug middle-end/127860] New: expand_vec_perm_const reduces the selector by the result length for a VEC_PERM_EXPR with wider inputs (latent wrong code) igor at tachyum dot com via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127849] New: different vectorization of AND reduction for a single-bit set initial value manu at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug libstdc++/127228] [17 Regression] basic_string::_M_create not honoring contracts ncm at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/99000] [modules] merging of textual redefinitions: declaration std::__copy_move_a2 conflicts with import jason at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/99000] [modules] merging of textual redefinitions: declaration std::__copy_move_a2 conflicts with import jason at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/99000] [modules] merging of textual redefinitions: declaration std::__copy_move_a2 conflicts with import cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127787] [17 Regression] ICE in module.cc after r17-4959-g13920d004da35b jason at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/103524] [meta-bug] modules issue jason at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127685] [17 Regression] Constant member-function pointer table loads optimized to null since r17-4752 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127685] [17 Regression] Constant member-function pointer table loads optimized to null since r17-4752 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127773] [x86] vzeroupper missing before call to IPA-RA-known non-AVX callee, causing SSE/AVX transition assists liuhongt at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127805] [17 Regression] ICE in in do_rpo_vn_1, at tree-ssa-sccvn.cc:8962 (since r17-5018-g50b1269d94bac5) alfierichards at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127838] [15/16/17 Regression] Incorrect vectorization with -march=x86-64-v2 or aarch64 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c/127859] New: -Wvla wobbly diagnostic depending on the order of declarations foss+gcc--- via Gcc-bugs
• 2026/10/12 [Bug fortran/127846] New: MINLOC/MAXLOC with MASK and BACK=.true. ignore the mask federico.perini at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug c++/127856] [17 Regression] class with a `std::meta::info` member and a default member initializer, instantiated as a local at `-O1`+: ICE in `type_contains_placeholder_1` (tree.cc:4463) during `ealias`/`esra` since r17-4197 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug fortran/82173] [meta-bug] [PDT] Parameterized derived type errors cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails clhamilto at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug c++/123670] [14/15/16/17 Regression] ICE (Segmentation fault) in constraints_satisfied_p with lambda requires clause referencing captured local lambda since r13-980 mpolacek at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127856] [17 Regression] class with a `std::meta::info` member and a default member initializer, instantiated as a local at `-O1`+: ICE in `type_contains_placeholder_1` (tree.cc:4463) during `ealias`/`esra` since r17-4197 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127858] New: wrong code at -O2: LIM hoists load past aliasing store after merging a COMPONENT_REF with an equivalent MEM_REF r1ch+gcc at teamliquid dot com via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127853] x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127853] x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127814] [14/15/16 Regression] wrong code at -O3 with -fno-vect-cost-model on x86_64-linux-gnu rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127805] [17 Regression] ICE in in do_rpo_vn_1, at tree-ssa-sccvn.cc:8962 (since r17-5018-g50b1269d94bac5) cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127853] x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127841] m68k: subdi_dishl32 emits memory-to-memory sub.l schwab--- via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127811] [17 Regression] ICE in vect_schedule_slp_node rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127662] RISC-V: -mrvv-max-lmul=conv-dynamic triggers assertion in compare_lmul_to rdapp at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127662] RISC-V: -mrvv-max-lmul=conv-dynamic triggers assertion in compare_lmul_to cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127443] [17 Regression] ICE: in simplify_subreg_concatn, at lower-subreg.cc:678 with -O -g cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127855] New: [GCC C++17] CTAD through an alias of an alias whose target is `const Y<T>`: pedwarn, then ICE in `set_constraints` (constraint.cc:1053) 0599jiangyc at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127853] x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127843] [17 regression] ICE when building libgcc2 for hppa (RTL flag check: CONSTANT_POOL_ADDRESS_P used with unexpected rtx code 'const_double' in pa_legitimate_constant_p, at config/pa/pa.cc:11030) dave.anglin at bell dot net via Gcc-bugs
• 2026/10/12 [Bug c/127464] internal compiler error: in handle_callback_only_attribute with non prototype declaration jmelcr at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c/127464] internal compiler error: in handle_callback_only_attribute with non prototype declaration cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127853] New: x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug testsuite/125060] PowerPC tests fold-vec-cmp-int128.c and pr103316.c started failing after r16-286-gd84fbc516ea57d jeevitha at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127852] New: simplify-rtx/combine can merge equal volatile accesses vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug middle-end/127723] [vectorizer] Handle simdlen's 'scaled' modifier of OpenMP 'simd' / __simd__ attr for non-const simdlen (esp. for AArch64/RISC-V) burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug middle-end/127848] Incorrect tail call optimization with _BitInt return types jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c++/127734] [OpenMP] 'simd' 'construct' trait selector ignored in 'declare variant' cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127847] New: Hoist can move expr reading asm goto outputs before asm goto vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug middle-end/127850] New: [OpenMP] Handle user/manual-vectorization with SIMD trait in 'declare variant' burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127824] fails to vectorize bounded double comparison with and reduction tnfchris at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127824] fails to vectorize bounded double comparison with and reduction manu at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127824] fails to vectorize bounded double comparison with and reduction manu at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug c/127192] -Wunused-value warns about static_assert in expression eczbek.void at gmail dot com via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127824] fails to vectorize bounded double comparison with and reduction tnfchris at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/111763] `(a & ~1) | 2` could be done as `(a & ~(1 | 2)) + 2` which allows to use leal roger at nextmovesoftware dot com via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/126521] [14/15/16 Regression] Wrong RTL ifcvt with abs roger at nextmovesoftware dot com via Gcc-bugs
• 2026/10/12 [Bug ipa/127772] ICE: in shift, at sreal.h:104 with -O2 --param=ipa-cp-profile-runtime-scaling=536870884 jamborm at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug testsuite/127519] rs6000: builtin_altivec_tr_stxvr_runnable.c fails on power10 BE cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/111280] CLZ(0) generated when CLZ_DEFINED_VALUE_AT_ZERO is false jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/111280] CLZ(0) generated when CLZ_DEFINED_VALUE_AT_ZERO is false rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/124974] bpf: support for bpf arenas vineetg at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug rtl-optimization/127814] [14/15/16/17 Regression] wrong code at -O3 with -fno-vect-cost-model on x86_64-linux-gnu pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/127824] fails to vectorize bounded double comparison with and reduction rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127844] GCC produces less efficient code than LLVM for integer division jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127844] GCC produces less efficient code than LLVM for integer division pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug target/127844] GCC produces less efficient code than LLVM for integer division pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/12 [Bug tree-optimization/53805] vrp/dce removes trapping comparison and other instructions cvs-commit at gcc dot gnu.org via Gcc-bugs

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