diff --git a/.gitignore b/.gitignore
index 494a188..8ce888f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /newlib-cygwin-50e2a63b04bdd018484605fbb954fd1bd5147fa0.tar.xz
 /nvptx-tools-5f6f343a302d620b0868edab376c00b15741e39e.tar.xz
 /gcc-10.0.1-20200121.tar.xz
+/gcc-10.0.1-20200123.tar.xz
diff --git a/gcc.spec b/gcc.spec
index 36192ec..c303c95 100644
--- a/gcc.spec
+++ b/gcc.spec
@@ -1,10 +1,10 @@
-%global DATE 20200121
-%global gitrev 0d664c7566fe5bf444420c5333401ac056e1a5d6
+%global DATE 20200123
+%global gitrev 083f4455962cb0f38e406792b5aaa198f77ecc60
 %global gcc_version 10.0.1
 %global gcc_major 10
 # Note, gcc_release must be integer, if you want to add suffixes to
 # %%{release}, append them after %%{gcc_release} on Release: line.
-%global gcc_release 0.4
+%global gcc_release 0.5
 %global nvptx_tools_gitrev 5f6f343a302d620b0868edab376c00b15741e39e
 %global newlib_cygwin_gitrev 50e2a63b04bdd018484605fbb954fd1bd5147fa0
 %global _unpackaged_files_terminate_build 0
@@ -259,7 +259,6 @@ Patch8: gcc10-foffload-default.patch
 Patch9: gcc10-Wno-format-security.patch
 Patch10: gcc10-rh1574936.patch
 Patch11: gcc10-d-shared-libphobos.patch
-Patch12: gcc10-libcpp-lex-workaround.patch
 
 # On ARM EABI systems, we do want -gnueabi to be part of the
 # target triple.
@@ -281,7 +280,7 @@ Patch12: gcc10-libcpp-lex-workaround.patch
 %if %{build_go}
 # Avoid stripping these libraries and binaries.
 %global __os_install_post \
-chmod 644 %{buildroot}%{_prefix}/%{_lib}/libgo.so.15.* \
+chmod 644 %{buildroot}%{_prefix}/%{_lib}/libgo.so.16.* \
 chmod 644 %{buildroot}%{_prefix}/bin/go.gcc \
 chmod 644 %{buildroot}%{_prefix}/bin/gofmt.gcc \
 chmod 644 %{buildroot}%{_prefix}/libexec/gcc/%{gcc_target_platform}/%{gcc_major}/cgo \
@@ -289,7 +288,7 @@ chmod 644 %{buildroot}%{_prefix}/libexec/gcc/%{gcc_target_platform}/%{gcc_major}
 chmod 644 %{buildroot}%{_prefix}/libexec/gcc/%{gcc_target_platform}/%{gcc_major}/test2json \
 chmod 644 %{buildroot}%{_prefix}/libexec/gcc/%{gcc_target_platform}/%{gcc_major}/vet \
 %__os_install_post \
-chmod 755 %{buildroot}%{_prefix}/%{_lib}/libgo.so.15.* \
+chmod 755 %{buildroot}%{_prefix}/%{_lib}/libgo.so.16.* \
 chmod 755 %{buildroot}%{_prefix}/bin/go.gcc \
 chmod 755 %{buildroot}%{_prefix}/bin/gofmt.gcc \
 chmod 755 %{buildroot}%{_prefix}/libexec/gcc/%{gcc_target_platform}/%{gcc_major}/cgo \
@@ -771,7 +770,6 @@ to NVidia PTX capable devices if available.
 %patch10 -p0 -b .rh1574936~
 %endif
 %patch11 -p0 -b .d-shared-libphobos~
-%patch12 -p0 -b .libcpp-lex-workaround~
 
 echo 'Red Hat %{version}-%{gcc_release}' > gcc/DEV-PHASE
 
@@ -1365,7 +1363,7 @@ ln -sf ../../../libstdc++.so.6.*[0-9] libstdc++.so
 ln -sf ../../../libgfortran.so.5.* libgfortran.so
 ln -sf ../../../libgomp.so.1.* libgomp.so
 %if %{build_go}
-ln -sf ../../../libgo.so.15.* libgo.so
+ln -sf ../../../libgo.so.16.* libgo.so
 %endif
 %if %{build_libquadmath}
 ln -sf ../../../libquadmath.so.0.* libquadmath.so
@@ -1395,7 +1393,7 @@ ln -sf ../../../../%{_lib}/libstdc++.so.6.*[0-9] libstdc++.so
 ln -sf ../../../../%{_lib}/libgfortran.so.5.* libgfortran.so
 ln -sf ../../../../%{_lib}/libgomp.so.1.* libgomp.so
 %if %{build_go}
-ln -sf ../../../../%{_lib}/libgo.so.15.* libgo.so
+ln -sf ../../../../%{_lib}/libgo.so.16.* libgo.so
 %endif
 %if %{build_libquadmath}
 ln -sf ../../../../%{_lib}/libquadmath.so.0.* libquadmath.so
@@ -1515,8 +1513,8 @@ ln -sf ../`echo ../../../../lib/libgfortran.so.5.* | sed s~/lib/~/lib64/~` 64/li
 ln -sf ../`echo ../../../../lib/libgomp.so.1.* | sed s~/lib/~/lib64/~` 64/libgomp.so
 %if %{build_go}
 rm -f libgo.so
-echo 'INPUT ( %{_prefix}/lib/'`echo ../../../../lib/libgo.so.15.* | sed 's,^.*libg,libg,'`' )' > libgo.so
-echo 'INPUT ( %{_prefix}/lib64/'`echo ../../../../lib/libgo.so.15.* | sed 's,^.*libg,libg,'`' )' > 64/libgo.so
+echo 'INPUT ( %{_prefix}/lib/'`echo ../../../../lib/libgo.so.16.* | sed 's,^.*libg,libg,'`' )' > libgo.so
+echo 'INPUT ( %{_prefix}/lib64/'`echo ../../../../lib/libgo.so.16.* | sed 's,^.*libg,libg,'`' )' > 64/libgo.so
 %endif
 %if %{build_libquadmath}
 rm -f libquadmath.so
@@ -1614,8 +1612,8 @@ ln -sf ../`echo ../../../../lib64/libgfortran.so.5.* | sed s~/../lib64/~/~` 32/l
 ln -sf ../`echo ../../../../lib64/libgomp.so.1.* | sed s~/../lib64/~/~` 32/libgomp.so
 %if %{build_go}
 rm -f libgo.so
-echo 'INPUT ( %{_prefix}/lib64/'`echo ../../../../lib64/libgo.so.15.* | sed 's,^.*libg,libg,'`' )' > libgo.so
-echo 'INPUT ( %{_prefix}/lib/'`echo ../../../../lib64/libgo.so.15.* | sed 's,^.*libg,libg,'`' )' > 32/libgo.so
+echo 'INPUT ( %{_prefix}/lib64/'`echo ../../../../lib64/libgo.so.16.* | sed 's,^.*libg,libg,'`' )' > libgo.so
+echo 'INPUT ( %{_prefix}/lib/'`echo ../../../../lib64/libgo.so.16.* | sed 's,^.*libg,libg,'`' )' > 32/libgo.so
 %endif
 %if %{build_libquadmath}
 rm -f libquadmath.so
@@ -1802,7 +1800,7 @@ chmod 755 %{buildroot}%{_prefix}/%{_lib}/liblsan.so.0.*
 %endif
 %if %{build_go}
 # Avoid stripping these libraries and binaries.
-chmod 644 %{buildroot}%{_prefix}/%{_lib}/libgo.so.15.*
+chmod 644 %{buildroot}%{_prefix}/%{_lib}/libgo.so.16.*
 chmod 644 %{buildroot}%{_prefix}/bin/go.gcc
 chmod 644 %{buildroot}%{_prefix}/bin/gofmt.gcc
 chmod 644 %{buildroot}%{_prefix}/libexec/gcc/%{gcc_target_platform}/%{gcc_major}/cgo
@@ -2890,7 +2888,7 @@ end
 %doc rpm.doc/go/*
 
 %files -n libgo
-%attr(755,root,root) %{_prefix}/%{_lib}/libgo.so.15*
+%attr(755,root,root) %{_prefix}/%{_lib}/libgo.so.16*
 %doc rpm.doc/libgo/*
 
 %files -n libgo-devel
@@ -2998,6 +2996,18 @@ end
 %endif
 
 %changelog
+* Thu Jan 23 2020 Jakub Jelinek <jakub@redhat.com> 10.0.1-0.5
+- update from trunk
+  - PRs analyzer/93307, analyzer/93316, analyzer/93352, analyzer/93375,
+	analyzer/93378, analyzer/93382, c++/40752, c++/60855, c++/90732,
+	c++/91476, c++/92804, c++/92907, c++/93324, c++/93331, c++/93345,
+	c/84919, c/93348, fortran/93329, ipa/93315, libstdc++/91947,
+	rtl-optimization/93124, rtl-optimization/93402, target/91298,
+	target/92424, target/9311, target/93119, target/93333, target/93335,
+	target/93341, target/93346, target/93376, testsuite/93391,
+	tree-optimization/92924, tree-optimization/93381
+  - fix ICE in nothrow_spec_p (#1794094, c++/93345)
+
 * Tue Jan 21 2020 Jakub Jelinek <jakub@redhat.com> 10.0.1-0.4
 - update from trunk
   - PRs c++/33799, c++/92536, debug/92763, fortran/44960, fortran/93309,
diff --git a/sources b/sources
index cc3b4a0..7f8eaea 100644
--- a/sources
+++ b/sources
@@ -1,3 +1,3 @@
-SHA512 (gcc-10.0.1-20200121.tar.xz) = da870a96e739a3091392b7f62d7fbe4ceef7d6f49644ca366a9a2918b87b70d859f58b3dccc8a53546b81012f4af9d92a709eed4d94ba137f713a08606a59fb6
+SHA512 (gcc-10.0.1-20200123.tar.xz) = 0f729f71a0538c18c9ad882871abaed82c25d00d9bec6d65fac484cf4d9397308a5a69260c10a5d3e7c461972d102032857cf89951026490bbe2076bc693f892
 SHA512 (newlib-cygwin-50e2a63b04bdd018484605fbb954fd1bd5147fa0.tar.xz) = 9ceea0b883185fe489724d54a7e909bb6ed4785fcadf80162033dc6a133e2657337175601278e4155d1f8fac275ff9c8a02572aea876166c608774c809f832e9
 SHA512 (nvptx-tools-5f6f343a302d620b0868edab376c00b15741e39e.tar.xz) = f6d10db94fa1570ae0f94df073fa3c73c8e5ee16d59070b53d94f7db0de8a031bc44d7f3f1852533da04b625ce758e022263855ed43cfc6867e0708d001e53c7