go-env.eclass: filter LTO temporarily for gcc 14.0.1

14.0.1 won't ever be a released version, just do this as a hack because
gcc has a checking ICE w/ go LTO atm and this prohibits more testing.

Bug: https://bugs.gentoo.org/912152
Bug: https://gcc.gnu.org/PR113204
Signed-off-by: Sam James <sam@gentoo.org>

eclass/go-env.eclass

@@ -1,4 +1,4 @@
-# Copyright 2023 Gentoo Authors
+# Copyright 2023-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 # @ECLASS: go-env.eclass
@@ -14,7 +14,7 @@
 if [[ -z ${_GO_ENV_ECLASS} ]]; then
 _GO_ENV_ECLASS=1
 
-inherit toolchain-funcs
+inherit flag-o-matic toolchain-funcs
 
 # @FUNCTION: go-env_set_compile_environment
 # @DESCRIPTION:
@@ -33,6 +33,9 @@ go-env_set_compile_environment() {
 	use arm && export GOARM=$(go-env_goarm)
 	use x86 && export GO386=$(go-env_go386)
 
+	# XXX: Hack for checking ICE (bug #912152, gcc PR113204)
+	[[ $(gcc-fullversion) == 14.0.1 ]] && filter-lto
+
 	export CGO_CFLAGS="${CGO_CFLAGS:-$CFLAGS}"
 	export CGO_CPPFLAGS="${CGO_CPPFLAGS:-$CPPFLAGS}"
 	export CGO_CXXFLAGS="${CGO_CXXFLAGS:-$CXXFLAGS}"