[gcc(refs/vendors/microsoft/heads/main)] Update xfail with new failures

[Eugene Rozenfeld]

https://gcc.gnu.org/g:07efb8e4274d24409117d20e2ec7ff3a0a011d0d

commit 07efb8e4274d24409117d20e2ec7ff3a0a011d0d
Author: MS Automation <gnutools@microsoft.com>
Date:   Thu Jul 21 11:36:53 2022 +0000

    Update xfail with new failures

Diff:
---
 contrib/testsuite-management/x86_64-pc-linux-gnu.xfail | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/contrib/testsuite-management/x86_64-pc-linux-gnu.xfail b/contrib/testsuite-management/x86_64-pc-linux-gnu.xfail
index 105d4af693d..f81bf5b3531 100644
--- a/contrib/testsuite-management/x86_64-pc-linux-gnu.xfail
+++ b/contrib/testsuite-management/x86_64-pc-linux-gnu.xfail
@@ -144,4 +144,9 @@ FAIL: g++.dg/warn/pr104025.C -std=gnu++98 (test for excess errors)
 UNRESOLVED: g++.dg/asan/asan_test.C -O2  compilation failed to produce executable
 FAIL: g++.dg/cpp0x/variadic-alias3.C -std=c++17 (internal compiler error: in hashtab_chk_error, at hash-table.cc:137)
 FAIL: g++.dg/cpp0x/variadic-alias3.C -std=c++17 (test for excess errors)
-FAIL: gcc.target/i386/auto-init-4.c scan-assembler-times long\t-16843010 5
\ No newline at end of file
+FAIL: gcc.target/i386/auto-init-4.c scan-assembler-times long\t-16843010 5
+FAIL: gcc.dg/pr23911.c scan-tree-dump-times dce3 "__complex__ \\(1.0e\\+0, 0.0\\)" 2
+FAIL: gcc.dg/pr56837.c scan-tree-dump-times optimized "memset ..c, 68, 16384.;" 1
+XPASS: g++.dg/warn/Wstringop-overflow-4.C -std=gnu++14  (test for bogus messages, line 198)
+XPASS: g++.dg/warn/Wstringop-overflow-4.C -std=gnu++17  (test for bogus messages, line 198)
+XPASS: g++.dg/warn/Wstringop-overflow-4.C -std=gnu++20  (test for bogus messages, line 198)
\ No newline at end of file