Reportedly glibc 2.28 removes the ustat.h header file and the ustat
function. This breaks libgo, which provides syscall.Ustat that calls
the C ustat function. Fix this by removing syscall.Ustat from libgo.
Bootstrapped and ran Go testsuite on x86_64-pc-linux-gnu. Committed
to mainline, GCC 8 branch, and GCC 7 branch.
Ian
Index: gcc/go/gofrontend/MERGE
===================================================================
--- gcc/go/gofrontend/MERGE (revision 261871)
+++ gcc/go/gofrontend/MERGE (working copy)
@@ -1,4 +1,4 @@
-d3eb93c1b8990dbfd4bb660c5c8454916b62655c
+bdead75ea02fa852a559f35b41453df0c47c9a66
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.
Index: libgo/configure.ac
===================================================================
--- libgo/configure.ac (revision 261819)
+++ libgo/configure.ac (working copy)
@@ -537,24 +537,6 @@ AC_CHECK_HEADERS([linux/filter.h linux/i
#endif
])
-AC_CACHE_CHECK([whether <ustat.h> can be used],
-[libgo_cv_c_ustat_h],
-[CFLAGS_hold=$CFLAGS
-CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE $OSCFLAGS"
-AC_COMPILE_IFELSE(
-[AC_LANG_SOURCE([
-#include <sys/types.h>
-#ifdef HAVE_LINUX_FILTER_H
-#include <linux/filter.h>
-#endif
-#include <ustat.h>
-])], [libgo_cv_c_ustat_h=yes], [libgo_cv_c_ustat_h=no])
-CFLAGS=$CFLAGS_hold])
-if test $libgo_cv_c_ustat_h = yes; then
- AC_DEFINE(HAVE_USTAT_H, 1,
- [Define to 1 if you have the <ustat.h> header file and it works.])
-fi
-
AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
AC_CHECK_FUNCS(strerror_r strsignal wait4 mincore setenv unsetenv
dl_iterate_phdr)
Index: libgo/go/syscall/libcall_linux_ustat.go
===================================================================
--- libgo/go/syscall/libcall_linux_ustat.go (revision 261819)
+++ libgo/go/syscall/libcall_linux_ustat.go (nonexistent)
@@ -1,12 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// GNU/Linux library ustat call.
-// This is not supported on some kernels, such as arm64.
-// +build !arm64,!nios2,!riscv64
-
-package syscall
-
-//sys Ustat(dev int, ubuf *Ustat_t) (err error)
-//ustat(dev _dev_t, ubuf *Ustat_t) _C_int
Index: libgo/mksysinfo.sh
===================================================================
--- libgo/mksysinfo.sh (revision 261819)
+++ libgo/mksysinfo.sh (working copy)
@@ -1164,20 +1164,6 @@ grep '^type _sysinfo ' gen-sysinfo.go |
-e 's/mem_unit/Unit/' \
>> ${OUT}
-# The ustat struct.
-grep '^type _ustat ' gen-sysinfo.go | \
- sed -e 's/_ustat/Ustat_t/' \
- -e 's/f_tfree/Tfree/' \
- -e 's/f_tinode/Tinoe/' \
- -e 's/f_fname/Fname/' \
- -e 's/f_fpack/Fpack/' \
- >> ${OUT}
-# Force it to be defined, as on some older GNU/Linux systems the
-# header file fails when using with <linux/filter.h>.
-if ! grep 'type _ustat ' gen-sysinfo.go >/dev/null 2>&1; then
- echo 'type Ustat_t struct { Tfree int32; Tinoe uint64; Fname [5+1]int8;
Fpack [5+1]int8; }' >> ${OUT}
-fi
-
# The utimbuf struct.
grep '^type _utimbuf ' gen-sysinfo.go | \
sed -e 's/_utimbuf/Utimbuf/' \
Index: libgo/sysinfo.c
===================================================================
--- libgo/sysinfo.c (revision 261819)
+++ libgo/sysinfo.c (working copy)
@@ -144,9 +144,6 @@
#if defined(HAVE_SYS_SYSINFO_H)
#include <sys/sysinfo.h>
#endif
-#if defined(HAVE_USTAT_H)
-#include <ustat.h>
-#endif
#if defined(HAVE_UTIME_H)
#include <utime.h>
#endif
