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• 2026/10/20 [Bug tree-optimization/128003] wrong code with -fwrapv for a switch on _BitInt(128) lowered to a jump table cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug lto/127922] Wrong code with -flto: unsigned _BitInt(N) store does not alias _BitInt(N) load rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug rtl-optimization/127983] [17 Regression] wrong code at -O1 and above with -mavx2 for vector broadcasts of a scalar before and after its increment since r17-2354 cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/127965] [14/15/16/17 Regression] wrong code with __atomic_fetch_or since r13-3760 cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug libgcc/109270] ssp/ssp.h should be adapted to use __builtin_dynamic_object_size() siddhesh at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug libgcc/109270] ssp/ssp.h should be adapted to use __builtin_dynamic_object_size() cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug fortran/128030] New: FP state saved/restored in a procedure with no access to the IEEE modules T.J.R.Bending at exeter dot ac.uk via Gcc-bugs
• 2026/10/20 [Bug c++/128029] New: [9/10/11/12/13/14/15/16/17 Regression] literal operator template with auto/dependent parameter incorrectly accepted gabravier at gmail dot com via Gcc-bugs
• 2026/10/20 [Bug debug/113194] Hangup build ExtractAPIConsumer.cpp with `-Og -g` huangpei at loongson dot cn via Gcc-bugs
• 2026/10/20 [Bug debug/113194] Hangup build ExtractAPIConsumer.cpp with `-Og -g` huangpei at loongson dot cn via Gcc-bugs
• 2026/10/20 [Bug debug/113194] Hangup build ExtractAPIConsumer.cpp with `-Og -g` huangpei at loongson dot cn via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128013] [15/16/7 Regression] ICE at expand internal compiler error: SSA corruption with SLP cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/111280] CLZ(0) generated when CLZ_DEFINED_VALUE_AT_ZERO is false cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/127964] [15/16/17 Regression] Wrong code at -O2 with infinite recursive jump and hang rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128028] [17 regression] gmp and mpfr miscompiled sjames at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128028] New: [17 regression] gmp and mpfr miscompiled sjames at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128014] [17 Regression] ICE in control flow in the middle of basic block rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug c++/87638] [C++14] lambda init-capture fails for const references still cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug debug/128027] New: [DebugInfo] i386 CONCAT locations emit oversized x87 register pieces wujielun402 at gmail dot com via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128006] [14/15/16 Regression] wrong code at -O1 and above with -ffast-math for (x * y) * pow (x, 2.5) + z * x rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128006] wrong code at -O1 and above with -ffast-math for (x * y) * pow (x, 2.5) + z * x cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug target/128015] [x86] sgxintrin.h: __enclv_generic binds "=c" to b instead of c cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128008] [14/15/16 Regression] wrong code at -O2: store through a restrict member pointing to its own struct type is deleted rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128008] wrong code at -O2: store through a restrict member pointing to its own struct type is deleted cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/126904] backward threader: no path-sensitive load CSE (value numbering?) rguenther at suse dot de via Gcc-bugs
• 2026/10/20 [Bug libstdc++/127476] <memory> unconditionally includes <bits/indirect.h> in freestanding mode cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug sanitizer/127742] Flexible gnu::counted_by array nested in a struct fails with "AddressSanitizer: global-buffer-overflow" git at maxchernoff dot ca via Gcc-bugs
• 2026/10/20 [Bug fortran/127995] [17 Regression] ubsan: load of value 1264848256, which is not a valid value for type 'bt' in module.cc:mio_typespec jamborm at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128013] [15/16/7 Regression] ICE at expand internal compiler error: SSA corruption with SLP rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128022] New: [16/17 Regression] 1.6x slowdown of SPEC CPU2026 766.femflow_r on Zen5 with PGO vekumar at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128022] [16/17 Regression] 1.6x slowdown of SPEC CPU2026 766.femflow_r on Zen5 with PGO rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128022] [16/17 Regression] 1.6x slowdown of SPEC CPU2026 766.femflow_r on Zen5 with PGO rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128014] [17 Regression] ICE in control flow in the middle of basic block rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128012] [14/15/16/17 Regression] Wrong code with vectorisation and __builtin_setjmp/__builtin_longjmp rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug debug/128026] New: [DebugInfo] Invalid CFI register encoding in output_cfa_loc and output_cfa_loc_raw wujielun402 at gmail dot com via Gcc-bugs
• 2026/10/20 [Bug fortran/82173] [meta-bug] [PDT] Parameterized derived type errors cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug c++/115471] Fail to capture (with initializer) constant bit-fields by reference in lambda expression cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128008] wrong code at -O2: store through a restrict member pointing to its own struct type is deleted rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug c++/90789] gcc complains cannot capture 'f()()' by reference on valid code cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug c++/128021] New: [C++26 contracts] -g changes caller-side wrapper emission order yqtian668 at gmail dot com via Gcc-bugs
• 2026/10/20 [Bug target/122409] -stdlib=libc++ doesn't work on musl zhixu.liu at gmail dot com via Gcc-bugs
• 2026/10/20 [Bug rtl-optimization/128007] wrong code with -frounding-math -ffinite-math-only: x - x is folded to +0.0 under FE_DOWNWARD rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug tree-optimization/128006] wrong code at -O1 and above with -ffast-math for (x * y) * pow (x, 2.5) + z * x rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug debug/128024] New: [DebugInfo] emits invalid DW_OP_and operands with -mx32 wujielun402 at gmail dot com via Gcc-bugs
• 2026/10/20 [Bug debug/128025] New: [DebugInfo] multiple_reg_loc_descriptor emits invalid register pieces with -m32 wujielun402 at gmail dot com via Gcc-bugs
• 2026/10/20 [Bug target/127851] [16/17 Regression] combine can reorder two volatile reads by folding them into one insn ubizjak at gmail dot com via Gcc-bugs
• 2026/10/20 [Bug middle-end/128004] wrong code with -frounding-math: 1.0 + -1.0 is folded to +0.0 under FE_DOWNWARD rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug sanitizer/128002] [14/15/16/17 Regression] wrong code with -O0 -fsanitize=address for an address-taken parameter used in a nested function rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/20 [Bug target/127851] [16/17 Regression] combine can reorder two volatile reads by folding them into one insn cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug debug/128023] New: [DebugInfo] optimize_string_length emits DW_OP_call4 in strict DWARF 2 wujielun402 at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug c++/104411] Cannot capture by reference using braced initializer cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug c++/95069] Capture by reference cannot use list-initalization cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug debug/128020] New: [DebugInfo] AArch64: loop unrolling gives a stale constant DWARF location for a loop counter MrEven132 at outlook dot com via Gcc-bugs
• 2026/10/19 [Bug c/128019] New: [DebugInfo] AArch64: wrong GDB values for signed _BitInt remainders at -O2 MrEven132 at outlook dot com via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127985] [17 Regression] Recent match.pd simplification breaking saturation discovery on RISC-V chenzhongyao.hit at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug c/128018] New: Warnings for static in inline should have an option to disable them rasheeqhere at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug c++/103555] out-of-line definition of class template method fails in the presence of type named the same as template argument herring at lanl dot gov via Gcc-bugs
• 2026/10/19 [Bug fortran/127120] ASSOCIATE mishandles a parenthesized variable as the selector jvdelisle at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/128017] ICEs and bogus errors: SELECT TYPE on an ASSOCIATE name whose selector is a polymorphic function reference kargl at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/127120] ASSOCIATE mishandles a parenthesized variable as the selector ivan.pribec at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/126551] missed vectorization due to missed reduction detection in ifcvt in miniBUDE tnfchris at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug c++/127986] [14/15/16/17 Regression] ICE in tsubst_expr, at cp/pt.cc:23146 on value-initialized aggregate whose array element has a builtin NSDMI, inside a template rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/128010] aarch64 has no asm clobber syntax for the top bits of sve z regs needed by syscalls pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug c/90181] Feature request: provide a way to explicitly select specific named registers in constraints pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/127892] valgrind error in gfc_simplify_expr(gfc_expr*, int) (expr.cc:2531) jvdelisle at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/128010] aarch64 has no asm clobber syntax for the top bits of sve z regs needed by syscalls pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/128010] aarch64 has no asm clobber syntax for the top bits of sve z regs needed by syscalls nsz at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127994] assertion failure on allocator for extension aggregate containing task ebotcazou at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug libstdc++/127963] std::atomic<bool> loses the requested memory_order at -Os: members taking memory_order are not _GLIBCXX_ALWAYS_INLINE redi at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug c++/126680] ICE: in set_decl_context_in_fn, at cp/name-lookup.cc:3675 cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug c++/123615] (c++-reflection) - [meta-bug] reflection issue mpolacek at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [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
• 2026/10/19 [Bug c++/126680] ICE: in set_decl_context_in_fn, at cp/name-lookup.cc:3675 cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/128017] ICEs and bogus errors: SELECT TYPE on an ASSOCIATE name whose selector is a polymorphic function reference jvdelisle at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/128017] New: ICEs and bogus errors: SELECT TYPE on an ASSOCIATE name whose selector is a polymorphic function reference jvdelisle at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/128001] [OpenMP] Implicit declare target fails with metadirectives / walk_tree_1 fails to walk TREE_PURPOSE cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128013] [17 Regression] ICE at expand internal compiler error: SSA corruption with vectors ktkachov at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127994] assertion failure on allocator for extension aggregate with task ebotcazou at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127974] questionable implementation of 'Valid for floating point ebotcazou at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127994] assertion failure on allocator for extension aggregate with task cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127974] questionable implementation of 'Valid for floating point cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127994] assertion failure on allocator for extension aggregate with task cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug c++/127750] [17 Regression] Lambda in polymorphic typeid operand mangled with wrong discriminator (undocumented ABI break vs 16) vladislav.semykin at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug middle-end/127958] store to a _Bool field at byte offset >= 2^61: FRE's eliminate builds a BIT_FIELD_REF whose bit position does not fit in 64 bits, ICE in tree_to_poly_uint64 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127909] Arm should detect sdot_prod and use smlad/smlald for 32/64 bit accumulation. rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127974] questionable implementation of 'Valid for floating point cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127994] assertion failure on allocator for extension aggregate with task cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/127921] Signed large _BitInt rotate is lowered with an arithmetic right shift cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug c++/127754] [17 Regression] FAIL: g++.dg/tree-ssa/ssa-dse-1.C scan-tree-dump-times dse1 everywhere since r17-4750-ga382bed036aa5f pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127974] Float'Valid causes an unnecessary spill ebotcazou at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/127862] VEC_PERM_EXPR merge patterns mishandle permutes whose inputs and result differ in length (ICE with svld1rq + svrev, wrong code) cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127966] [15/16/17 Regression] wrong code at -O1 and above with a loop over string literal bytes >= 0x80 since r15-6990 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127912] GCC fails to vectorize a negative step conditional store rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/128001] New: [OpenMP] Implicit declare target fails with metadirectives / walk_tree_1 fails to walk TREE_PURPOSE burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127913] Unnecessary 128-bit arithmetic in ranges::lower_bound over a bounded iota_view rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug rtl-optimization/127903] [14/15/16 Regression] simplify-rtx: bit-cast of an unordered vector comparison is folded to a constant zero since r10-1575 ishevlyakov at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/127962] [17 Regression] gcc.dg/fold-perm-2.c fails since r17-1920-gf3475825fe0 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128013] New: [17 Regression] ICE at expand internal compiler error: SSA corruption with vectors ktkachov at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128016] New: Extra pointer increment and copy when updating a reference in a loop adamant.pwn at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug target/128015] [x86] sgxintrin.h: __enclv_generic binds "=c" to b instead of c jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/127995] [17 Regression] ubsan: load of value 1264848256, which is not a valid value for type 'bt' in module.cc:mio_typespec pheeck at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127965] [14/15/16/17 Regression] wrong code with __atomic_fetch_or since r13-3760 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug libstdc++/127963] std::atomic<bool> loses the requested memory_order at -Os: members taking memory_order are not _GLIBCXX_ALWAYS_INLINE redi at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug preprocessor/126913] -E column padding is quadratic and its readability rationale does not hold jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/126551] missed vectorization due to missed reduction detection in ifcvt in miniBUDE cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ipa/128009] wrong code at -O3 for a union of long double and unsigned __int128 read through a pointer kyuwoncho18 at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/126904] backward threader: no path-sensitive load CSE (value numbering?) aldyh at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/126904] backward threader: no path-sensitive load CSE (value numbering?) aldyh at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/126904] backward threader: no path-sensitive load CSE (value numbering?) aldyh at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/126904] backward threader: no path-sensitive load CSE (value numbering?) aldyh at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/126904] backward threader: no path-sensitive load CSE (value numbering?) aldyh at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug bootstrap/127376] [17 Regression] boostrap-lto fails with a compare error due to GMP setting a macro different between stage 2 and stage 3 tnfchris at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/126904] backward threader: no path-sensitive load CSE (value numbering?) aldyh at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug bootstrap/127376] [17 Regression] boostrap-lto fails with a compare error due to GMP setting a macro different between stage 2 and stage 3 cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127998] Possible missed optimization at O3 pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128012] [14/15/16/17 Regression] Wrong code with vectorisation and __builtin_setjmp/__builtin_longjmp pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/128000] AArch64: 16-byte __builtin_memcpy uses ldp/stp of X registers instead of ldr/str of a Q register pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug rtl-optimization/127983] [17 Regression] wrong code at -O1 and above with -mavx2 for vector broadcasts of a scalar before and after its increment since r17-2354 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/111280] CLZ(0) generated when CLZ_DEFINED_VALUE_AT_ZERO is false cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128012] [14/15/16/17 Regression] Wrong code with vectorisation and abnormal dispatchers pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/127892] valgrind error in gfc_simplify_expr(gfc_expr*, int) (expr.cc:2531) anlauf at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128012] [14/15/16/17 Regression] Wrong code with vectorisation and abnormal dispatchers pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127916] [15/16 Regression] wrong code emitted on almost-SAT_ADD code (edit) rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128016] Extra pointer increment and copy when updating a reference in a loop pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/127957] [17 Regression] ICE: in extract_insn, at recog.cc:2896 unrecognizable insn: float_extend:DF with -mgeneral-regs-only -mf16c and __builtin_nansf16("nan") cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127994] assertion failure on allocator for extension aggregate containing task krischik at users dot sourceforge.net via Gcc-bugs
• 2026/10/19 [Bug target/127957] [17 Regression] ICE: in extract_insn, at recog.cc:2896 unrecognizable insn: float_extend:DF with -mgeneral-regs-only -mf16c and __builtin_nansf16("nan") ubizjak at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug sanitizer/128002] [14/15/16/17 Regression] wrong code with -O0 -fsanitize=address for an address-taken parameter used in a nested function pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/128011] New: [RISC-V] Zicfilp: lpad emitted after patchable-function-entry NOPs 220245569 at seu dot edu.cn via Gcc-bugs
• 2026/10/19 [Bug middle-end/128010] aarch64 has no asm clobber syntax for the top bits of sve z regs needed by syscalls pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127357] [15/16/17 Regression] signed_integer_sat_add single-AND recognizer over-fires and cause miscompile cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/128010] aarch64 has no asm clobber syntax for the top bits of sve z regs needed by syscalls pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/128010] aarch64 has no asm clobber syntax for the top bits of sve z regs needed by syscalls nsz at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/127997] New: [OpenMP] For PARAMETER (named constant): bogus "has been referenced in offloaded code but hasn’t been marked to be included in the offloaded code" burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ipa/127999] [14/15/16/17 Regression] -fprofile-use coverage mismatch when a no_profile_instrument_function callee is early-inlined rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128014] [17 Regression] ICE in control flow in the middle of basic block pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/127881] Wrong code: address instead of value passed for CHARACTER(c_char), VALUE dummy of BIND(C) interface when actual is a dummy argument or ACHAR() result cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128013] [15/16/7 Regression] ICE at expand internal compiler error: SSA corruption with vectors pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128014] New: [17 Regression] ICE in control flow in the middle of basic block ktkachov at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128013] [17 Regression] ICE at expand internal compiler error: SSA corruption with vectors pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127974] Float'Valid causes an unnecessary spill ebotcazou at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127916] [15/16 Regression] wrong code emitted on almost-SAT_ADD code (edit) law at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/128015] New: [x86] sgxintrin.h: __enclv_generic binds "=c" to b instead of c 220245569 at seu dot edu.cn via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127916] [15/16 Regression] wrong code emitted on almost-SAT_ADD code (edit) cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ada/127994] assertion failure on allocator for extension aggregate containing task cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128012] New: [14/15/16/17 Regression] Wrong code with vectorisation and abnormal dispatchers ktkachov at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug c++/38377] __builtin_constant_p(t) ? t : 1 is not considered a constant integer expression sjames at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127357] [15/16/17 Regression] signed_integer_sat_add single-AND recognizer over-fires and cause miscompile cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/82173] [meta-bug] [PDT] Parameterized derived type errors cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127916] [15/16 Regression] wrong code emitted on almost-SAT_ADD code (edit) cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ipa/127999] New: [12/13/14/15/16 Regression] -fprofile-use coverage mismatch when a no_profile_instrument_function callee is early-inlined harmen at stoppels dot ch via Gcc-bugs
• 2026/10/19 [Bug middle-end/128010] aarch64 has no asm clobber syntax for the top bits of sve z regs needed by syscalls pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128006] New: wrong code at -O1 and above with -ffast-math for (x * y) * pow (x, 2.5) + z * x kyuwoncho18 at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128005] New: wrong code at -O2 and -O3 for a dot-product loop over _BitInt(3) arrays kyuwoncho18 at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug target/127957] [17 Regression] ICE: in extract_insn, at recog.cc:2896 unrecognizable insn: float_extend:DF with -mgeneral-regs-only -mf16c and __builtin_nansf16("nan") ubizjak at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug target/127865] [17 Regression] RISC-V: redundant sext.w after AOP patches law at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/127862] VEC_PERM_EXPR merge patterns mishandle permutes whose inputs and result differ in length (ICE with svld1rq + svrev, wrong code) ishevlyakov at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/26163] [meta-bug] missed optimization in SPEC (2026, 2k17, 2k and 2k6 and 95) law at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/127865] [17 Regression] RISC-V: redundant sext.w after AOP patches cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/128010] New: aarch64 has no asm clobber syntax for the top bits of sve z regs needed by syscalls nsz at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/127988] [17 Regression] ICE in create_fix_barrier, at config/arm/minipool.cc:1083 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/127786] Combining two evaluated FP comparisons drops FE_INVALID under -ftrapping-math ishevlyakov at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128003] wrong code with -fwrapv for a switch on _BitInt(128) lowered to a jump table jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/128001] [OpenMP] Implicit declare target fails with metadirectives / walk_tree_1 fails to walk TREE_PURPOSE burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127899] [14/15/16/17 Regression] ICE in gimplify_size_expressions for __builtin_dynamic_object_size type 2 at a negative offset cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127968] [16/17 Regression] wrong code at -O1, -O2 and -Os with partially overlapping memcpy in a loop since r16-5526 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/128001] [OpenMP] Implicit declare target fails with metadirectives / walk_tree_1 fails to walk TREE_PURPOSE burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug ipa/128009] wrong code at -O3 for a union of long double and unsigned __int128 read through a pointer pinskia at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug rtl-optimization/128007] New: wrong code with -frounding-math -ffinite-math-only: x - x is folded to +0.0 under FE_DOWNWARD kyuwoncho18 at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug ipa/128009] New: wrong code at -O3 for a union of long double and unsigned __int128 read through a pointer kyuwoncho18 at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128008] New: wrong code at -O2: store through a restrict member pointing to its own struct type is deleted kyuwoncho18 at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug middle-end/128004] New: wrong code with -frounding-math: 1.0 + -1.0 is folded to +0.0 under FE_DOWNWARD kyuwoncho18 at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/128003] New: wrong code with -fwrapv for a switch on _BitInt(128) lowered to a jump table kyuwoncho18 at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug sanitizer/128002] New: wrong code with -O0 -fsanitize=address for an address-taken parameter used in a nested function kyuwoncho18 at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug rtl-optimization/127983] [17 Regression] wrong code at -O1 and above with -mavx2 for vector broadcasts of a scalar before and after its increment since r17-2354 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug fortran/127997] [OpenMP] For PARAMETER (named constant): bogus "has been referenced in offloaded code but hasn’t been marked to be included in the offloaded code" burnus at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127899] [14/15/16/17 Regression] ICE in gimplify_size_expressions for __builtin_dynamic_object_size type 2 at a negative offset siddhesh at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/127988] [17 Regression] ICE in create_fix_barrier, at config/arm/minipool.cc:1083 rearnsha at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127966] [15/16/17 Regression] wrong code at -O1 and above with a loop over string literal bytes >= 0x80 since r15-6990 cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug testsuite/127942] gcc.dg/vect/bb-slp-pr126306-1.c: { target vect64 } / { target vect128 } selectors silently ignored (missing comment argument) cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug rtl-optimization/127983] [17 Regression] wrong code at -O1 and above with -mavx2 for vector broadcasts of a scalar before and after its increment since r17-2354 jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/128000] New: AArch64: 16-byte __builtin_memcpy uses ldp/stp of X registers instead of ldr/str of a Q register tomasz.marzec at snowflake dot com via Gcc-bugs
• 2026/10/19 [Bug c++/127754] [17 Regression] FAIL: g++.dg/tree-ssa/ssa-dse-1.C scan-tree-dump-times dse1 everywhere since r17-4750-ga382bed036aa5f hr.jonas.hansen at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug middle-end/127958] store to a _Bool field at byte offset >= 2^61: FRE's eliminate builds a BIT_FIELD_REF whose bit position does not fit in 64 bits, ICE in tree_to_poly_uint64 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug middle-end/127958] store to a _Bool field at byte offset >= 2^61: FRE's eliminate builds a BIT_FIELD_REF whose bit position does not fit in 64 bits, ICE in tree_to_poly_uint64 cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug testsuite/127942] gcc.dg/vect/bb-slp-pr126306-1.c: { target vect64 } / { target vect128 } selectors silently ignored (missing comment argument) rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127981] [15/16/17 Regression] wrong code at -O3 with "-fno-tree-pre -fno-move-loop-stores -fno-tree-forwprop -fno-tree-dominator-opts" on x86_64-linux-gnu since r15-6655-g0014a858a14b82 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127981] wrong code at -O3 with "-fno-tree-pre -fno-move-loop-stores -fno-tree-forwprop -fno-tree-dominator-opts" on x86_64-linux-gnu rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug preprocessor/126913] -E column padding is quadratic and its readability rationale does not hold ismael at linux dot com via Gcc-bugs
• 2026/10/19 [Bug target/127957] [17 Regression] ICE: in extract_insn, at recog.cc:2896 unrecognizable insn: float_extend:DF with -mgeneral-regs-only -mf16c and __builtin_nansf16("nan") jakub at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug c++/127834] final polymorphic typeid operand treated as unevaluated sjames at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug c++/127833] Null `typeid` on a final polymorphic glvalue sjames at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127978] [16/17 Regression] vectorizer: segfault in vectorizable_store on conditional call to an omp declare simd simdlen(32) clone rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127998] New: Possible missed optimization at O3 apowenq at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127876] [14/15/16 Regression] Wrong code at -O3: conditional reduction to -0.0 returns +0.0 (CONST_COND_REDUCTION uses MAX_EXPR) cvs-commit at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/127957] [17 Regression] ICE: in extract_insn, at recog.cc:2896 unrecognizable insn: float_extend:DF with -mgeneral-regs-only -mf16c and __builtin_nansf16("nan") ubizjak at gmail dot com via Gcc-bugs
• 2026/10/19 [Bug tree-optimization/127984] [15/16/17 Regression] wrong code at -O2 and -O3 for a bit-reflected CRC loop of 24 iterations since r15-5850 rguenth at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug libstdc++/127980] std::from_chars rounds std::float16_t subnormal ties to odd redi at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug target/122409] -stdlib=libc++ doesn't work on musl iains at gcc dot gnu.org via Gcc-bugs
• 2026/10/19 [Bug rtl-optimization/127983] [17 Regression] wrong code at -O1 and above with -mavx2 for vector broadcasts of a scalar before and after its increment rguenth at gcc dot gnu.org via Gcc-bugs

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