 12-check_regression/baseline.xfail | 251 +++++++++++++++++++++++++++++++++++++
 12-check_regression/console.log.xz | Bin 0 -> 5012 bytes
 12-check_regression/fails.sum      |   6 +
 12-check_regression/flaky.xfail    | 111 ++++++++++++++++
 README.html                        |   7 +-
 README.txt                         |   5 +-
 sumfiles/xfails.xfail              |   2 +
 7 files changed, 379 insertions(+), 3 deletions(-)

diff --git a/12-check_regression/baseline.xfail b/12-check_regression/baseline.xfail
new file mode 100644
index 00000000..a0e14dce
--- /dev/null
+++ b/12-check_regression/baseline.xfail
@@ -0,0 +1,251 @@
+		=== g++ tests ===
+
+Running g++:g++.dg/analyzer/analyzer.exp ...
+FAIL: c-c++-common/analyzer/fileno-1.c -std=c++14 (test for excess errors)
+FAIL: c-c++-common/analyzer/fileno-1.c -std=c++17 (test for excess errors)
+FAIL: c-c++-common/analyzer/fileno-1.c -std=c++20 (test for excess errors)
+FAIL: c-c++-common/analyzer/fileno-1.c -std=c++98 (test for excess errors)
+XPASS: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++14  (test for bogus messages, line 1211)
+XPASS: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++14  (test for bogus messages, line 888)
+FAIL: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++14  (test for warnings, line 881)
+FAIL: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++14 (test for excess errors)
+XPASS: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++17  (test for bogus messages, line 1211)
+XPASS: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++17  (test for bogus messages, line 888)
+FAIL: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++17  (test for warnings, line 881)
+FAIL: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++17 (test for excess errors)
+XPASS: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++20  (test for bogus messages, line 1211)
+XPASS: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++20  (test for bogus messages, line 888)
+FAIL: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++20  (test for warnings, line 881)
+FAIL: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++20 (test for excess errors)
+XPASS: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++98  (test for bogus messages, line 1211)
+XPASS: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++98  (test for bogus messages, line 888)
+FAIL: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++98  (test for warnings, line 881)
+FAIL: c-c++-common/analyzer/flex-with-call-summaries.c -std=c++98 (test for excess errors)
+XPASS: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++14  (test for bogus messages, line 889)
+FAIL: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++14  at line 882 (test for warnings, line 881)
+FAIL: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++14 (test for excess errors)
+XPASS: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++17  (test for bogus messages, line 889)
+FAIL: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++17  at line 882 (test for warnings, line 881)
+FAIL: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++17 (test for excess errors)
+XPASS: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++20  (test for bogus messages, line 889)
+FAIL: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++20  at line 882 (test for warnings, line 881)
+FAIL: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++20 (test for excess errors)
+XPASS: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++98  (test for bogus messages, line 889)
+FAIL: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++98  at line 882 (test for warnings, line 881)
+FAIL: c-c++-common/analyzer/flex-without-call-summaries.c -std=c++98 (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++14  2 blank line(s) in output
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++14  expected multiline pattern lines 46-61
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++14 (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++17  2 blank line(s) in output
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++17  expected multiline pattern lines 46-61
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++17 (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++20  2 blank line(s) in output
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++20  expected multiline pattern lines 46-61
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++20 (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++98  2 blank line(s) in output
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++98  expected multiline pattern lines 46-61
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c -std=c++98 (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++14  2 blank line(s) in output
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++14  expected multiline pattern lines 19-34
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++14 (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++17  2 blank line(s) in output
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++17  expected multiline pattern lines 19-34
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++17 (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++20  2 blank line(s) in output
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++20  expected multiline pattern lines 19-34
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++20 (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++98  2 blank line(s) in output
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++98  expected multiline pattern lines 19-34
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c -std=c++98 (test for excess errors)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++14  (test for warnings, line 11)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++14  (test for warnings, line 19)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++14  (test for warnings, line 26)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++14  (test for warnings, line 34)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++14  (test for warnings, line 35)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++14  at line 12 (test for warnings, line 11)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++14 (test for excess errors)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++17  (test for warnings, line 11)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++17  (test for warnings, line 19)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++17  (test for warnings, line 26)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++17  (test for warnings, line 34)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++17  (test for warnings, line 35)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++17  at line 12 (test for warnings, line 11)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++17 (test for excess errors)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++20  (test for warnings, line 11)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++20  (test for warnings, line 19)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++20  (test for warnings, line 26)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++20  (test for warnings, line 34)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++20  (test for warnings, line 35)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++20  at line 12 (test for warnings, line 11)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++20 (test for excess errors)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++98  (test for warnings, line 11)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++98  (test for warnings, line 19)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++98  (test for warnings, line 26)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++98  (test for warnings, line 34)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++98  (test for warnings, line 35)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++98  at line 12 (test for warnings, line 11)
+FAIL: g++.dg/analyzer/placement-new-size.C -std=c++98 (test for excess errors)
+
+Running g++:g++.dg/dg.exp ...
+FAIL: g++.dg/contracts/contracts-ctor-dtor2.C (test for errors, line 23)
+FAIL: g++.dg/contracts/contracts-ctor-dtor2.C (test for errors, line 27)
+FAIL: g++.dg/contracts/contracts-tmpl-spec2.C output pattern test
+FAIL: g++.dg/cpp2a/decomp2.C -std=gnu++14 execution test
+FAIL: g++.dg/cpp2a/decomp2.C -std=gnu++17 execution test
+FAIL: g++.dg/cpp2a/decomp2.C -std=gnu++20 execution test
+FAIL: g++.dg/opt/pr97315-1.C -std=gnu++14 (test for excess errors)
+FAIL: g++.dg/opt/pr97315-1.C -std=gnu++17 (test for excess errors)
+FAIL: g++.dg/opt/pr97315-1.C -std=gnu++20 (test for excess errors)
+FAIL: g++.dg/opt/pr97315-1.C -std=gnu++98 (test for excess errors)
+XPASS: g++.dg/warn/Wstringop-overflow-4.C -std=gnu++98 pr106120 (test for bogus messages, line 144)
+FAIL: g++.dg/warn/Wuse-after-free3.C -std=gnu++14 (test for excess errors)
+FAIL: g++.dg/warn/Wuse-after-free3.C -std=gnu++17 (test for excess errors)
+FAIL: g++.dg/warn/Wuse-after-free3.C -std=gnu++20 (test for excess errors)
+XPASS: g++.dg/warn/pr33738.C -std=gnu++14  (test for warnings, line 18)
+XPASS: g++.dg/warn/pr33738.C -std=gnu++14  (test for warnings, line 22)
+XPASS: g++.dg/warn/pr33738.C -std=gnu++17  (test for warnings, line 18)
+XPASS: g++.dg/warn/pr33738.C -std=gnu++17  (test for warnings, line 22)
+XPASS: g++.dg/warn/pr33738.C -std=gnu++20  (test for warnings, line 18)
+XPASS: g++.dg/warn/pr33738.C -std=gnu++20  (test for warnings, line 22)
+XPASS: g++.dg/warn/pr33738.C -std=gnu++98  (test for warnings, line 18)
+XPASS: g++.dg/warn/pr33738.C -std=gnu++98  (test for warnings, line 22)
+
+Running g++:g++.dg/lto/lto.exp ...
+FAIL: g++.dg/lto/pr65276 cp_lto_pr65276_0.o-cp_lto_pr65276_1.o link, -flto -O0 -std=c++11
+
+Running g++:g++.dg/modules/modules.exp ...
+FAIL: g++.dg/modules/xtreme-header-2_c.C -std=c++2b (test for excess errors)
+FAIL: g++.dg/modules/xtreme-header-5_c.C -std=c++2a (test for excess errors)
+FAIL: g++.dg/modules/xtreme-header-5_c.C -std=c++2b (test for excess errors)
+
+Running g++:g++.target/arm/arm.exp ...
+XPASS: g++.target/arm/bfloat_cpp_typecheck.C (test for bogus messages, line 10)
+XPASS: g++.target/arm/bfloat_cpp_typecheck.C (test for bogus messages, line 11)
+
+Running g++:g++.target/arm/mve.exp ...
+FAIL: g++.target/arm/../../gcc.target/arm/mve/intrinsics/pr97327.c (test for excess errors)
+FAIL: g++.target/arm/mve/general-c++/nomve_fp_1.c (test for errors, line 13)
+FAIL: g++.target/arm/mve/general-c++/nomve_fp_1.c at line 14 (test for warnings, line 13)
+FAIL: g++.target/arm/mve/general-c++/nomve_fp_1.c (test for excess errors)
+		=== gcc tests ===
+
+Running gcc:gcc.dg/analyzer/analyzer.exp ...
+FAIL: c-c++-common/analyzer/null-deref-pr108251-smp_fetch_ssl_fc_has_early-O2.c (test for excess errors)
+FAIL: c-c++-common/analyzer/null-deref-pr108251-smp_fetch_ssl_fc_has_early.c (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c 2 blank line(s) in output
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-11.c expected multiline pattern lines 46-61
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c (test for excess errors)
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c 2 blank line(s) in output
+FAIL: c-c++-common/analyzer/out-of-bounds-diagram-8.c expected multiline pattern lines 19-34
+FAIL: gcc.dg/analyzer/out-of-bounds-diagram-10.c (test for excess errors)
+FAIL: gcc.dg/analyzer/out-of-bounds-diagram-10.c 2 blank line(s) in output
+FAIL: gcc.dg/analyzer/out-of-bounds-diagram-10.c expected multiline pattern lines 13-28
+FAIL: gcc.dg/analyzer/switch-enum-1.c (test for bogus messages, line 26)
+FAIL: gcc.dg/analyzer/switch-enum-1.c (test for bogus messages, line 44)
+FAIL: gcc.dg/analyzer/switch-enum-2.c (test for bogus messages, line 34)
+FAIL: gcc.dg/analyzer/switch-enum-2.c (test for bogus messages, line 52)
+
+Running gcc:gcc.dg/analyzer/torture/analyzer-torture.exp ...
+FAIL: gcc.dg/analyzer/torture/switch-enum-pr105273-doom-p_floor.c -O0   (test for bogus messages, line 82)
+FAIL: gcc.dg/analyzer/torture/switch-enum-pr105273-doom-p_maputl.c -O0   (test for bogus messages, line 83)
+
+Running gcc:gcc.dg/dg.exp ...
+FAIL: gcc.dg/Wnonnull-4.c (test for excess errors)
+FAIL: gcc.dg/auto-init-uninit-17.c unconditional (test for warnings, line 14)
+FAIL: gcc.dg/c23-stdarg-4.c execution test
+FAIL: gcc.dg/ira-shrinkwrap-prep-1.c scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping"
+FAIL: gcc.dg/uninit-17.c unconditional (test for warnings, line 14)
+
+Running gcc:gcc.dg/torture/dg-torture.exp ...
+FAIL: gcc.dg/torture/c23-stdarg-split-1a.c -O0  execution test
+FAIL: gcc.dg/torture/c23-stdarg-split-1a.c -O1  execution test
+FAIL: gcc.dg/torture/c23-stdarg-split-1a.c -O2  execution test
+FAIL: gcc.dg/torture/c23-stdarg-split-1a.c -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test
+FAIL: gcc.dg/torture/c23-stdarg-split-1a.c -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  execution test
+FAIL: gcc.dg/torture/c23-stdarg-split-1a.c -O3 -g  execution test
+FAIL: gcc.dg/torture/c23-stdarg-split-1a.c -Os  execution test
+
+Running gcc:gcc.dg/tree-ssa/tree-ssa.exp ...
+FAIL: gcc.dg/tree-ssa/gen-vect-26.c scan-tree-dump-times vect "Alignment of access forced using peeling" 1
+FAIL: gcc.dg/tree-ssa/gen-vect-26.c scan-tree-dump-times vect "Vectorizing an unaligned access" 0
+FAIL: gcc.dg/tree-ssa/gen-vect-28.c scan-tree-dump-times vect "Alignment of access forced using peeling" 1
+FAIL: gcc.dg/tree-ssa/gen-vect-28.c scan-tree-dump-times vect "Vectorizing an unaligned access" 0
+FAIL: gcc.dg/tree-ssa/scev-3.c scan-tree-dump-times ivopts "&a" 1
+FAIL: gcc.dg/tree-ssa/scev-5.c scan-tree-dump-times ivopts "&a" 1
+
+Running gcc:gcc.dg/vect/vect.exp ...
+FAIL: gcc.dg/vect/slp-mask-store-1.c -flto -ffat-lto-objects execution test
+FAIL: gcc.dg/vect/slp-mask-store-1.c execution test
+
+Running gcc:gcc.misc-tests/gcov.exp ...
+FAIL: gcc.misc-tests/gcov-pr94029.c gcov failed: spawn failed
+
+Running gcc:gcc.target/arm/arm.exp ...
+FAIL: gcc.target/arm/addr-modes-float.c scan-assembler vst3.8\t{d[02468], d[02468], d[02468]}, \\[r[0-9]+\\]!
+FAIL: gcc.target/arm/bfloat16_scalar_typecheck.c (test for errors, line 45)
+FAIL: gcc.target/arm/bfloat16_scalar_typecheck.c (test for errors, line 97)
+UNRESOLVED: gcc.target/arm/cortex-m55-nodsp-flag-hard.c scan-assembler .arch_extension fp
+UNRESOLVED: gcc.target/arm/cortex-m55-nodsp-flag-hard.c scan-assembler .arch_extension fp.dp
+UNRESOLVED: gcc.target/arm/cortex-m55-nodsp-flag-hard.c scan-assembler .fpu fpv5-d16
+UNRESOLVED: gcc.target/arm/cortex-m55-nodsp-flag-hard.c scan-assembler-not .arch_extension dsp
+UNRESOLVED: gcc.target/arm/cortex-m55-nodsp-flag-hard.c scan-assembler-not .arch_extension mve
+UNRESOLVED: gcc.target/arm/cortex-m55-nodsp-flag-hard.c scan-assembler-not .arch_extension mve.fp
+FAIL: gcc.target/arm/cortex-m55-nodsp-flag-softfp.c scan-assembler .arch_extension fp
+FAIL: gcc.target/arm/cortex-m55-nodsp-flag-softfp.c scan-assembler .arch_extension fp.dp
+FAIL: gcc.target/arm/cortex-m55-nodsp-flag-softfp.c scan-assembler .fpu fpv5-d16
+UNRESOLVED: gcc.target/arm/cortex-m55-nofp-flag-hard.c scan-assembler .arch_extension dsp
+UNRESOLVED: gcc.target/arm/cortex-m55-nofp-flag-hard.c scan-assembler .arch_extension mve
+UNRESOLVED: gcc.target/arm/cortex-m55-nofp-flag-hard.c scan-assembler .fpu softvfp
+UNRESOLVED: gcc.target/arm/cortex-m55-nofp-flag-hard.c scan-assembler-not .arch_extension fp
+UNRESOLVED: gcc.target/arm/cortex-m55-nofp-flag-hard.c scan-assembler-not .arch_extension fp.dp
+UNRESOLVED: gcc.target/arm/cortex-m55-nofp-flag-hard.c scan-assembler-not .arch_extension mve.fp
+FAIL: gcc.target/arm/cortex-m55-nofp-flag-softfp.c scan-assembler .arch_extension dsp
+FAIL: gcc.target/arm/cortex-m55-nofp-flag-softfp.c scan-assembler .arch_extension mve
+FAIL: gcc.target/arm/cortex-m55-nofp-nomve-flag-softfp.c scan-assembler .arch_extension dsp
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve-flag-hard.c scan-assembler .arch_extension dsp
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve-flag-hard.c scan-assembler .arch_extension fp
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve-flag-hard.c scan-assembler .arch_extension fp.dp
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve-flag-hard.c scan-assembler .fpu fpv5-d16
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve-flag-hard.c scan-assembler-not .arch_extension mve
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve-flag-hard.c scan-assembler-not .arch_extension mve.fp
+FAIL: gcc.target/arm/cortex-m55-nomve-flag-softfp.c scan-assembler .arch_extension dsp
+FAIL: gcc.target/arm/cortex-m55-nomve-flag-softfp.c scan-assembler .arch_extension fp
+FAIL: gcc.target/arm/cortex-m55-nomve-flag-softfp.c scan-assembler .arch_extension fp.dp
+FAIL: gcc.target/arm/cortex-m55-nomve-flag-softfp.c scan-assembler .fpu fpv5-d16
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve.fp-flag-hard.c scan-assembler .arch_extension dsp
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve.fp-flag-hard.c scan-assembler .arch_extension fp
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve.fp-flag-hard.c scan-assembler .arch_extension fp.dp
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve.fp-flag-hard.c scan-assembler .arch_extension mve
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve.fp-flag-hard.c scan-assembler .fpu fpv5-d16
+UNRESOLVED: gcc.target/arm/cortex-m55-nomve.fp-flag-hard.c scan-assembler-not .arch_extension mve.fp
+FAIL: gcc.target/arm/cortex-m55-nomve.fp-flag-softfp.c scan-assembler .arch_extension dsp
+FAIL: gcc.target/arm/cortex-m55-nomve.fp-flag-softfp.c scan-assembler .arch_extension fp
+FAIL: gcc.target/arm/cortex-m55-nomve.fp-flag-softfp.c scan-assembler .arch_extension fp.dp
+FAIL: gcc.target/arm/cortex-m55-nomve.fp-flag-softfp.c scan-assembler .arch_extension mve
+FAIL: gcc.target/arm/cortex-m55-nomve.fp-flag-softfp.c scan-assembler .fpu fpv5-d16
+FAIL: gcc.target/arm/pr43920-2.c object-size text <= 54
+FAIL: gcc.target/arm/pr43920-2.c scan-assembler-times pop 2
+
+Running gcc:gcc.target/arm/mve/mve.exp ...
+FAIL: gcc.target/arm/mve/general-c/nomve_fp_1.c (test for errors, line 15)
+FAIL: gcc.target/arm/mve/general-c/nomve_fp_1.c at line 16 (test for warnings, line 15)
+FAIL: gcc.target/arm/mve/general-c/nomve_fp_1.c (test for excess errors)
+FAIL: gcc.target/arm/mve/intrinsics/pr97327.c (test for excess errors)
+		=== libstdc++ tests ===
+
+Running libstdc++:libstdc++-dg/conformance.exp ...
+FAIL: 19_diagnostics/stacktrace/current.cc -std=gnu++23 execution test
+FAIL: 19_diagnostics/stacktrace/current.cc -std=gnu++26 execution test
+FAIL: 19_diagnostics/stacktrace/entry.cc -std=gnu++23 execution test
+FAIL: 19_diagnostics/stacktrace/entry.cc -std=gnu++26 execution test
+FAIL: 19_diagnostics/stacktrace/stacktrace.cc -std=gnu++23 execution test
+FAIL: 19_diagnostics/stacktrace/stacktrace.cc -std=gnu++26 execution test
+FAIL: 22_locale/ctype/scan/wchar_t/1.cc -std=gnu++17 execution test
+FAIL: 23_containers/vector/bool/110807.cc -std=gnu++17 (test for excess errors)
+FAIL: 27_io/basic_filebuf/underflow/wchar_t/11603.cc -std=gnu++17 execution test
+FAIL: 27_io/basic_fstream/53984.cc -std=gnu++17 execution test
+FAIL: 29_atomics/atomic/compare_exchange_padding.cc -std=gnu++20 execution test
+FAIL: 29_atomics/atomic/compare_exchange_padding.cc -std=gnu++26 execution test
+XPASS: ext/stdio_filebuf/char/10063-2.cc -std=gnu++17 execution test
+XPASS: ext/stdio_filebuf/char/10063-3.cc -std=gnu++17 execution test
diff --git a/12-check_regression/console.log.xz b/12-check_regression/console.log.xz
new file mode 100644
index 00000000..288b04b3
Binary files /dev/null and b/12-check_regression/console.log.xz differ
diff --git a/12-check_regression/fails.sum b/12-check_regression/fails.sum
new file mode 100644
index 00000000..976f0dee
--- /dev/null
+++ b/12-check_regression/fails.sum
@@ -0,0 +1,6 @@
+
+		=== Results Summary ===
+
+# of stable fails		215
+# of flaky entries		100
+# of all tests			403697
diff --git a/12-check_regression/flaky.xfail b/12-check_regression/flaky.xfail
new file mode 100644
index 00000000..0c5b76a3
--- /dev/null
+++ b/12-check_regression/flaky.xfail
@@ -0,0 +1,111 @@
+################################
+# Known flaky tests
+
+# From https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/243/:
+		=== gcc tests ===
+
+Running gcc:gcc.dg/dg.exp ...
+flaky,expire=20231128 | UNRESOLVED: c-c++-common/pragma-region.c -Wc++-compat   scan-assembler code_within_named_region
+flaky,expire=20231128 | UNRESOLVED: c-c++-common/pragma-region.c -Wc++-compat   scan-assembler code_within_region
+flaky,expire=20231128 | FAIL: gcc.dg/Woverlength-strings-pedantic-c89-asm.c (test for excess errors)
+flaky,expire=20231128 | FAIL: gcc.dg/Woverlength-strings-pedantic-c90-asm.c (test for excess errors)
+flaky,expire=20231128 | FAIL: gcc.dg/Woverlength-strings-pedantic-c99-asm.c (test for excess errors)
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/ctor1.c scan-assembler-not C\\.0
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/h8300-div-delay-slot.c scan-assembler-not \tbra/s\t.*\n\tdiv*
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/inline-3.c scan-assembler-not big_function_2
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/nrv2.c scan-assembler-not memcpy
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/pr25376.c scan-assembler my_named_section
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/pr25376.c scan-assembler-symbol-section symbol simple$ has section ^\\.?my_named_section|simple\\[DS\\]|^\\"\\.opd\\"
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/pr28402.c scan-assembler-not __[a-z]*si3
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/pragma-re-1.c scan-assembler bar
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/pragma-re-1.c scan-assembler-not foo
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/pragma-re-4.c scan-assembler _foo
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/pragma-re-4.c scan-assembler-not _foo64
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/section1.c scan-assembler-not .bss
+flaky,expire=20231128 | UNRESOLVED: gcc.dg/verbose-asm-2.c scan-assembler total = 0
+
+Running gcc:gcc.target/arm/arm.exp ...
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/combine-cmp-shift.c scan-assembler cmp\tr[0-9]*, r[0-9]*, asr #31
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/data-rel-1.c scan-assembler (ldr|mov)\tr[0-9]+, \\[?r9
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/data-rel-1.c scan-assembler j\\(GOT\\)
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/data-rel-1.c scan-assembler-not _GLOBAL_OFFSET_TABLE_-\\(.LPIC
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/data-rel-1.c scan-assembler-not j-\\(.LPIC
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/data-rel-2.c scan-assembler _GLOBAL_OFFSET_TABLE_-\\(.LPIC
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/data-rel-2.c scan-assembler j\\(GOT\\)
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/data-rel-2.c scan-assembler-not j-\\(.LPIC
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/data-rel-3.c scan-assembler j-\\(.LPIC
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/data-rel-3.c scan-assembler-not _GLOBAL_OFFSET_TABLE_-\\(.LPIC
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/data-rel-3.c scan-assembler-not j\\(GOT\\)
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/neon-vmla-1.c scan-assembler vmla\\.i32
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/neon-vmls-1.c scan-assembler vmls\\.i32
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr19599.c scan-assembler bx
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr39839.c scan-assembler-not str[\\t ]*r.,[\\t ]*.sp,
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr40482.c scan-assembler-not ldr
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr40956.c scan-assembler-times movs?[\\t ]*r., #0 1
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr42093.c scan-assembler-not tbb
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr42093.c scan-assembler-not tbh
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr42172-1.c scan-assembler-times str 1
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr42496.c scan-assembler-not streq
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr42496.c scan-assembler-not strne
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr42505.c scan-assembler-not str[\\t ]*r.,[\\t ]*.sp,
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr42575.c scan-assembler-not mov
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr42879.c scan-assembler lsls
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr43137.c scan-assembler-not mov\tr1, r[1-9]
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr44999.c scan-assembler uxtb
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr46631.c scan-assembler ands
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr46788.c scan-assembler-not -32768
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr46975-2.c scan-assembler clz
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr46975-2.c scan-assembler lsr.*#5
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr46975-2.c scan-assembler sub
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr46975.c scan-assembler adcs
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr46975.c scan-assembler subs
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr53447-1.c scan-assembler-not mov
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr53447-2.c scan-assembler-not mov
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr53447-3.c scan-assembler-not mov
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/pr53447-4.c scan-assembler-not mov
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/stack-red-zone.c scan-assembler ldrb[^\n]*\\n[\t ]*add[\t ]*sp
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/tail-long-call.c scan-assembler bx
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/tail-long-call.c scan-assembler-not blx
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-cmpneg2add-1.c scan-assembler adds
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-cmpneg2add-1.c scan-assembler-not cmn
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-cmpneg2add-2.c scan-assembler adds
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-cmpneg2add-2.c scan-assembler-not cmn
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-cond-cmp-1.c scan-assembler cmpne
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-cond-cmp-2.c scan-assembler cmpeq
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-cond-cmp-3.c scan-assembler cmpgt
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-cond-cmp-4.c scan-assembler cmpgt
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-mul-space-2.c scan-assembler muls
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-mul-space-2.c scan-assembler-not cmp
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-mul-space-3.c scan-assembler muls
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-mul-space-3.c scan-assembler-not cmp
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-mul-space.c scan-assembler muls
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-mul-speed.c scan-assembler-not muls
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant1.c scan-assembler add.*#-16843010
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant1.c scan-assembler and.*#13435085
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant1.c scan-assembler sub.*#-1426019584
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#-2004318072
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#-33489408
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#-572662307
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#-587145984
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#1
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#13056
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#17
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#1717986918
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#1996488704
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#2228258
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#285212672
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#285217024
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#3342387
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#4456516
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler add.*#65536
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant2.c scan-assembler addw.*#546
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant3.c scan-assembler and.*#-1431655766
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant3.c scan-assembler bic.*#1114129
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant3.c scan-assembler bic.*#170
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant3.c scan-assembler orn.*#255
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant4.c scan-assembler add.*#252706816
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant4.c scan-assembler add.*#32505856
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant4.c scan-assembler add.*#3600
+flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant4.c scan-assembler add.*#480
+
+		=== Results Summary ===
diff --git a/README.html b/README.html
index 1d5fe685..dc41936a 100644
--- a/README.html
+++ b/README.html
@@ -30,7 +30,7 @@ If you are investigating such a problem, you are probably primarily
 interested in:
 <p>
 <ul>
-<li><a href="notify/results.compare.txt/*view*/">notify/results.compare.txt</a> (regression report).
+<li><a href="notify/regressions.sum/*view*/">notify/regressions.sum</a> and <a href="notify/results.compare.txt/*view*/">notify/results.compare.txt</a> (regression report).
 
 </ul>
 <p>
@@ -58,12 +58,15 @@ List of files below:
 <li><a href="./jenkins/run-build.env/*view*/">./jenkins/run-build.env</a>
 <li><a href="./manifest.sh/*view*/">./manifest.sh</a>
 <li><a href="./notify/configure-make.txt">./notify/configure-make.txt</a>
+<li><a href="./notify/configure-toolchain.txt/*view*/">./notify/configure-toolchain.txt</a>
+<li><a href="./notify/fixes.sum/*view*/">./notify/fixes.sum</a>
 <li><a href="./notify/jira/comment-template.txt/*view*/">./notify/jira/comment-template.txt</a>
-<li><a href="./notify/lnt_report.json">./notify/lnt_report.json</a>
+<li><a href="./notify/lnt_report.json/*view*/">./notify/lnt_report.json</a>
 <li><a href="./notify/mail-body.txt/*view*/">./notify/mail-body.txt</a>
 <li><a href="./notify/mail-recipients.txt/*view*/">./notify/mail-recipients.txt</a>
 <li><a href="./notify/mail-subject.txt/*view*/">./notify/mail-subject.txt</a>
 <li><a href="./notify/progressions.sum/*view*/">./notify/progressions.sum</a>
+<li><a href="./notify/regressions.sum/*view*/">./notify/regressions.sum</a>
 <li><a href="./notify/results.compare/*view*/">./notify/results.compare</a>
 <li><a href="./notify/results.compare.txt/*view*/">./notify/results.compare.txt</a>
 <li><a href="./notify/results-summary.txt/*view*/">./notify/results-summary.txt</a>
diff --git a/README.txt b/README.txt
index 5575072a..5e0740bb 100644
--- a/README.txt
+++ b/README.txt
@@ -27,7 +27,7 @@ If you are investigating such a problem, you are probably primarily
 interested in:
 
 
-- notify/results.compare.txt (regression report).
+- notify/regressions.sum and notify/results.compare.txt (regression report).
 
 
 
@@ -55,12 +55,15 @@ List of files below:
 - ./jenkins/run-build.env
 - ./manifest.sh
 - ./notify/configure-make.txt
+- ./notify/configure-toolchain.txt
+- ./notify/fixes.sum
 - ./notify/jira/comment-template.txt
 - ./notify/lnt_report.json
 - ./notify/mail-body.txt
 - ./notify/mail-recipients.txt
 - ./notify/mail-subject.txt
 - ./notify/progressions.sum
+- ./notify/regressions.sum
 - ./notify/results.compare
 - ./notify/results.compare.txt
 - ./notify/results-summary.txt
diff --git a/sumfiles/xfails.xfail b/sumfiles/xfails.xfail
index 45552391..747e4a77 100644
--- a/sumfiles/xfails.xfail
+++ b/sumfiles/xfails.xfail
@@ -3,6 +3,7 @@
 # - known flaky tests (from baseline)
 # - known failures (from baseline)
 #
+################################
 # Known flaky tests
 
 # From https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/243/:
@@ -113,6 +114,7 @@ flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant4.c
 flaky,expire=20231128 | UNRESOLVED: gcc.target/arm/thumb2-replicated-constant4.c scan-assembler add.*#480
 
 		=== Results Summary ===
+################################
 # Known failures (from baseline)
 		=== g++ tests ===
 
