[lfs] 02/02: gcc: update known failures and add the change log entry

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commit 1be59656419d06423421b8f8e2f4b75e3f0b7401
Author: Xi Ruoyao <[email protected]>
AuthorDate: Mon May 11 23:10:54 2026 +0800

    gcc: update known failures and add the change log entry
---
 chapter01/changelog.xml | 10 ++++++++++
 chapter08/gcc.xml       | 51 +++++++++++++++++++++++++++++--------------------
 2 files changed, 40 insertions(+), 21 deletions(-)

diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index a663a8877..f332e0ec2 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -40,6 +40,16 @@
     appropriate for the entry or if needed the entire day's listitem.
     -->
 
+    <listitem>
+      <para>2026-05-08</para>
+      <itemizedlist>
+        <listitem>
+          <para>[bdubbs] - Update to gcc-16.1.0.  Fixes
+          <ulink url='&lfs-ticket-root;5927'>#5927</ulink>.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem>
       <para>2026-05-01</para>
       <itemizedlist>
diff --git a/chapter08/gcc.xml b/chapter08/gcc.xml
index 884652ac1..52e5978c7 100644
--- a/chapter08/gcc.xml
+++ b/chapter08/gcc.xml
@@ -191,10 +191,6 @@ cd       build</userinput></screen>
 
 <screen><userinput remap="test">ulimit -s -H unlimited</userinput></screen>
 
-    <para>Now remove several known test failures:</para>
-
-<screen><userinput remap="test">sed -e '/cpython/d' -i ../gcc/testsuite/gcc.dg/plugin/plugin.exp</userinput></screen>
-
     <para>Test the results as a non-privileged user, but do not stop at errors:</para>
 
 <screen><userinput remap="test">chown -R tester .
@@ -211,23 +207,36 @@ su tester -c "PATH=$PATH make -k check"</userinput></screen>
     url="&test-results;"/> and
     <ulink url="https://gcc.gnu.org/ml/gcc-testresults/"/>.</para>
 
-    <!-- https://gcc.gnu.org/PR118885 -->
-    <para>Four tests related to <filename>pr90579.c</filename> are known
-    to fail.</para>
-
-    <!-- https://gcc.gnu.org/PR124682 -->
-    <para>Eight tests related to <filename>builtin-math-6.c</filename> are
-    known to fail.</para>
-
-    <para>Five tests related to <filename>analyzer/strchr-1.c</filename> are known
-    to fail.</para>
-
-    <!-- https://gcc.gnu.org/pipermail/gcc-patches/2026-February/708384.html -->
-    <para>Four tests in libstdc++, <filename>17_intro/badnames.cc</filename>,
-    <filename>17_intro/names.cc</filename>,
-    <filename>17_intro/names_fortify.cc</filename>, and
-    <filename>experimental/names.cc</filename>, are known to fail due to changes
-    with glibc-2.43.</para>
+    <para>In the <filename class='directory'>gcc.target/i386</filename>
+    tests, the tests named
+    <filename>auto-init-padding-9.c</filename>,
+    <filename>builtin-memmove-*.c</filename>,
+    <filename>mem{cpy,set}-pr120683-*.c</filename>,
+    <filename>pr111657-1.c</filename>,
+    <filename>pr115102.c</filename>,
+    <filename>pr116896.c</filename>,
+    <filename>pr120881-2a.c</filename>, and
+    <filename>pr122343-4a.c</filename> are known to fail.
+    The test named <filename>shift-gf2p8affine-2.c</filename> is known
+    to fail if the processor does not support AVX512.</para>
+
+    <para>In the <filename class='directory'>g++.target/i386</filename>
+    tests, the tests named
+    <filename>memset-pr108585-1{a,b}.C</filename>,
+    <filename>mv{,c}-symbols*.C</filename>,
+    <filename>pr112824-2.C</filename>, and
+    <filename>pr116896-1.C</filename> are known to fail.</para>
+
+    <para>Additionally, the tests
+    <filename>gcc.dg/ipa/pr122458.c</filename>,
+    <filename>gcc.dg/lto/toplevel-*-asm-*</filename>, and
+    <filename>gcc.dg/plugin/crash-test-nested-*.c</filename> are known to
+    fail.</para>
+
+    <para>The LFS editors have investigated those failures and confirmed
+    none indicates a critical issue.  Most of them are because the test case
+    author did not anticipate <parameter>--enable-default-ssp</parameter> or
+    <parameter>--enable-default-pie</parameter>.</para>
 
     <para>A few unexpected failures cannot always be avoided. In some cases
     test failures depend on the specific hardware of the system.<!--The GCC developers

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