This libgo patch defines SO_RCVTIMEO on 32-bit GNU/Linux. It was not
being defined before because it is defined as a conditional expression
that is too complicated for -fdump-go-spec to handle. This fixes
https://golang.org/issue/42872. Bootstrapped and ran Go testsuite on
x86_64-pc-linux-gnu. Committed to mainline.
Ian
e848a83f46f15280ad654f05545cc5ec4f5b8e50
diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index 41246030f13..e8cf468d8fc 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-45461eeba1db1a3b4194dc8ecc331c0e92f5ad4c
+be1738f1fff0e817d921ed568791f9b0585a6982
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.
diff --git a/libgo/mksysinfo.sh b/libgo/mksysinfo.sh
index deac5ce8d67..b32a0266b71 100755
--- a/libgo/mksysinfo.sh
+++ b/libgo/mksysinfo.sh
@@ -194,6 +194,7 @@ fi
# Networking constants.
egrep '^const _(AF|ARPHRD|ETH|IN|SOCK|SOL|SO|IPPROTO|TCP|IP|IPV6)_'
gen-sysinfo.go |
+ grep -v '_val =' |
sed -e 's/^\(const \)_\([^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
grep '^const _SOMAXCONN' gen-sysinfo.go |
sed -e 's/^\(const \)_\(SOMAXCONN[^= ]*\)\(.*\)$/\1\2 = _\2/' \
@@ -213,6 +214,14 @@ for m in SOCK_CLOEXEC SOCK_NONBLOCK; do
fi
done
+# On 32-bit GNU/Linux the expression for SO_RCVTIMEO is too complicated
+# for -fdump-go-spec.
+if ! grep '^const SO_RCVTIMEO ' ${OUT} >/dev/null 2>&1; then
+ if grep '^const _SO_RCVTIMEO_val' ${OUT} >/dev/null 2>&1; then
+ echo 'const SO_RCVTIMEO = _SO_RCVTIMEO_val' >> ${OUT}
+ fi
+fi
+
# The syscall package requires AF_LOCAL.
if ! grep '^const AF_LOCAL ' ${OUT} >/dev/null 2>&1; then
if grep '^const AF_UNIX ' ${OUT} >/dev/null 2>&1; then
diff --git a/libgo/sysinfo.c b/libgo/sysinfo.c
index 7086381a14c..a060ea867a5 100644
--- a/libgo/sysinfo.c
+++ b/libgo/sysinfo.c
@@ -337,6 +337,9 @@ enum {
#ifdef BIOCVERSION
BIOCVERSION_val = BIOCVERSION,
#endif
+#ifdef SO_RCVTIMEO
+ SO_RCVTIMEO_val = SO_RCVTIMEO,
+#endif
};
// SIOCGIFMTU can't be added in the above enum as it might
