gnulib: import mkstemp

Older versions of MinGW do not support mkstemp causing:

    gdb/unittests/scoped_fd-selftests.c:37:29: error: \
    'mkstemp' was not declared in this scope
       int fd = mkstemp (filename);
                             ^
    gdb/unittests/scoped_fd-selftests.c: In function 'void
    selftests::scoped_fd::test_release()':
    gdb/unittests/scoped_fd-selftests.c:56:29: error: \
    'mkstemp' was not declared in this scope
       int fd = mkstemp (filename);
                             ^

Import mkstemp from gnulib.

gdb/
	* gnulib/update-gnulib.sh (IMPORTED_GNULIB_MODULES): Add mkstemp.
	* gnulib/aclocal.m4: Regenerated.
	* gnulib/config.in: Regenerated.
	* gnulib/configure: Regenerated.
	* gnulib/import/Makefile.am: Regenerated.
	* gnulib/import/Makefile.in: Regenerated.
	* gnulib/import/m4/gnulib-cache.m4: Regenerated.
	* gnulib/import/m4/gnulib-comp.m4: Regenerated.
	* gnulib/import/m4/mkstemp.m4: Imported.
	* gnulib/import/m4/secure_getenv.m4: Imported.
	* gnulib/import/m4/tempname.m4: Imported.
	* gnulib/import/mkstemp.c: Imported.
	* gnulib/import/secure_getenv.c: Imported.
	* gnulib/import/tempname.c: Imported.
	* gnulib/import/tempname.h: Imported.

15 files changed, 934 insertions, 21 deletions

diff --git a/gdb/gnulib/aclocal.m4 b/gdb/gnulib/aclocal.m4
index e725bf4..0b4aa1b 100644
--- a/gdb/gnulib/aclocal.m4
+++ b/gdb/gnulib/aclocal.m4
@@ -1087,6 +1087,7 @@ m4_include([import/m4/memchr.m4])
 m4_include([import/m4/memmem.m4])
 m4_include([import/m4/mempcpy.m4])
 m4_include([import/m4/memrchr.m4])
+m4_include([import/m4/mkstemp.m4])
 m4_include([import/m4/mmap-anon.m4])
 m4_include([import/m4/mode_t.m4])
 m4_include([import/m4/msvc-inval.m4])
@@ -1106,6 +1107,7 @@ m4_include([import/m4/rename.m4])
 m4_include([import/m4/rewinddir.m4])
 m4_include([import/m4/rmdir.m4])
 m4_include([import/m4/save-cwd.m4])
+m4_include([import/m4/secure_getenv.m4])
 m4_include([import/m4/setenv.m4])
 m4_include([import/m4/signal_h.m4])
 m4_include([import/m4/ssize_t.m4])
@@ -1125,6 +1127,7 @@ m4_include([import/m4/sys_socket_h.m4])
 m4_include([import/m4/sys_stat_h.m4])
 m4_include([import/m4/sys_time_h.m4])
 m4_include([import/m4/sys_types_h.m4])
+m4_include([import/m4/tempname.m4])
 m4_include([import/m4/time_h.m4])
 m4_include([import/m4/unistd-safer.m4])
 m4_include([import/m4/unistd_h.m4])
diff --git a/gdb/gnulib/config.in b/gdb/gnulib/config.in
index e000f76..9899bb3 100644
--- a/gdb/gnulib/config.in
+++ b/gdb/gnulib/config.in
@@ -195,6 +195,9 @@
 /* Define to 1 when the gnulib module memrchr should be tested. */
 #undef GNULIB_TEST_MEMRCHR
 
+/* Define to 1 when the gnulib module mkstemp should be tested. */
+#undef GNULIB_TEST_MKSTEMP
+
 /* Define to 1 when the gnulib module open should be tested. */
 #undef GNULIB_TEST_OPEN
 
@@ -228,6 +231,9 @@
 /* Define to 1 when the gnulib module rmdir should be tested. */
 #undef GNULIB_TEST_RMDIR
 
+/* Define to 1 when the gnulib module secure_getenv should be tested. */
+#undef GNULIB_TEST_SECURE_GETENV
+
 /* Define to 1 when the gnulib module setenv should be tested. */
 #undef GNULIB_TEST_SETENV
 
@@ -411,9 +417,18 @@
 /* Define to 1 if you have the `getdtablesize' function. */
 #undef HAVE_GETDTABLESIZE
 
+/* Define to 1 if you have the `getegid' function. */
+#undef HAVE_GETEGID
+
+/* Define to 1 if you have the `geteuid' function. */
+#undef HAVE_GETEUID
+
 /* Define to 1 if you have the `getexecname' function. */
 #undef HAVE_GETEXECNAME
 
+/* Define to 1 if you have the `getgid' function. */
+#undef HAVE_GETGID
+
 /* Define to 1 if you have the `getlogin_r' function. */
 #undef HAVE_GETLOGIN_R
 
@@ -429,6 +444,9 @@
 /* Define to 1 if you have the `gettimeofday' function. */
 #undef HAVE_GETTIMEOFDAY
 
+/* Define to 1 if you have the `getuid' function. */
+#undef HAVE_GETUID
+
 /* Define to 1 if you have the <glob.h> header file. */
 #undef HAVE_GLOB_H
 
@@ -444,6 +462,9 @@
 /* Define if the isnan(long double) function is available in libc. */
 #undef HAVE_ISNANL_IN_LIBC
 
+/* Define to 1 if you have the `issetugid' function. */
+#undef HAVE_ISSETUGID
+
 /* Define to 1 if you have the `iswcntrl' function. */
 #undef HAVE_ISWCNTRL
 
@@ -503,6 +524,9 @@
    when it succeeds. */
 #undef HAVE_MINIMALLY_WORKING_GETCWD
 
+/* Define to 1 if you have the `mkstemp' function. */
+#undef HAVE_MKSTEMP
+
 /* Define to 1 if you have the `mprotect' function. */
 #undef HAVE_MPROTECT
 
@@ -1370,6 +1394,9 @@
 /* Define to 1 if you have the <search.h> header file. */
 #undef HAVE_SEARCH_H
 
+/* Define to 1 if you have the `secure_getenv' function. */
+#undef HAVE_SECURE_GETENV
+
 /* Define to 1 if you have the `setdtablesize' function. */
 #undef HAVE_SETDTABLESIZE
 
@@ -1510,6 +1537,9 @@
 /* Define to 1 if you have the `_set_invalid_parameter_handler' function. */
 #undef HAVE__SET_INVALID_PARAMETER_HANDLER
 
+/* Define to 1 if you have the `__secure_getenv' function. */
+#undef HAVE___SECURE_GETENV
+
 /* Define as the bit index in the word where to find bit 0 of the exponent of
    'long double'. */
 #undef LDBL_EXPBIT0_BIT
diff --git a/gdb/gnulib/configure b/gdb/gnulib/configure
index 37efd06..893f942 100644
--- a/gdb/gnulib/configure
+++ b/gdb/gnulib/configure
@@ -3362,8 +3362,14 @@ as_fn_append ac_func_list " mbsinit"
 as_fn_append ac_func_list " mbrtowc"
 as_fn_append ac_header_list " sys/mman.h"
 as_fn_append ac_func_list " mprotect"
+as_fn_append ac_func_list " mkstemp"
 as_fn_append ac_func_list " openat"
 as_fn_append ac_func_list " link"
+as_fn_append ac_func_list " secure_getenv"
+as_fn_append ac_func_list " getuid"
+as_fn_append ac_func_list " geteuid"
+as_fn_append ac_func_list " getgid"
+as_fn_append ac_func_list " getegid"
 as_fn_append ac_func_list " setenv"
 as_fn_append ac_func_list " strdup"
 as_fn_append ac_func_list " pipe"
@@ -5409,6 +5415,7 @@ fi
   # Code from module memmem-simple:
   # Code from module mempcpy:
   # Code from module memrchr:
+  # Code from module mkstemp:
   # Code from module msvc-inval:
   # Code from module msvc-nothrow:
   # Code from module multiarch:
@@ -5428,6 +5435,7 @@ fi
   # Code from module rmdir:
   # Code from module same-inode:
   # Code from module save-cwd:
+  # Code from module secure_getenv:
   # Code from module setenv:
   # Code from module signal-h:
   # Code from module snippet/_Noreturn:
@@ -5454,6 +5462,7 @@ fi
   # Code from module sys_stat:
   # Code from module sys_time:
   # Code from module sys_types:
+  # Code from module tempname:
   # Code from module time:
   # Code from module unistd:
   # Code from module unistd-safer:
@@ -11972,6 +11981,8 @@ _ACEOF
 
 
 
+
+
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for promoted mode_t type" >&5
 $as_echo_n "checking for promoted mode_t type... " >&6; }
 if test "${gl_cv_promoted_mode_t+set}" = set; then :
@@ -12112,6 +12123,16 @@ _ACEOF
 
 
 
+
+
+
+
+
+
+
+
+
+
 ac_fn_c_check_decl "$LINENO" "setenv" "ac_cv_have_decl_setenv" "$ac_includes_default"
 if test "x$ac_cv_have_decl_setenv" = x""yes; then :
   ac_have_decl=1
@@ -19676,6 +19697,117 @@ $as_echo "#define GNULIB_TEST_MEMRCHR 1" >>confdefs.h
 
 
 
+
+
+
+  if test $ac_cv_func_mkstemp = yes; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for working mkstemp" >&5
+$as_echo_n "checking for working mkstemp... " >&6; }
+if test "${gl_cv_func_working_mkstemp+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+
+        mkdir conftest.mkstemp
+        if test "$cross_compiling" = yes; then :
+  case "$host_os" in
+                     # Guess yes on glibc systems.
+             *-gnu*) gl_cv_func_working_mkstemp="guessing yes" ;;
+                     # If we don't know, assume the worst.
+             *)      gl_cv_func_working_mkstemp="guessing no" ;;
+           esac
+
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+int result = 0;
+              int i;
+              off_t large = (off_t) 4294967295u;
+              if (large < 0)
+                large = 2147483647;
+              umask (0);
+              for (i = 0; i < 70; i++)
+                {
+                  char templ[] = "conftest.mkstemp/coXXXXXX";
+                  int (*mkstemp_function) (char *) = mkstemp;
+                  int fd = mkstemp_function (templ);
+                  if (fd < 0)
+                    result |= 1;
+                  else
+                    {
+                      struct stat st;
+                      if (lseek (fd, large, SEEK_SET) != large)
+                        result |= 2;
+                      if (fstat (fd, &st) < 0)
+                        result |= 4;
+                      else if (st.st_mode & 0077)
+                        result |= 8;
+                      if (close (fd))
+                        result |= 16;
+                    }
+                }
+              return result;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  gl_cv_func_working_mkstemp=yes
+else
+  gl_cv_func_working_mkstemp=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+        rm -rf conftest.mkstemp
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_working_mkstemp" >&5
+$as_echo "$gl_cv_func_working_mkstemp" >&6; }
+    case "$gl_cv_func_working_mkstemp" in
+      *yes) ;;
+      *)
+        REPLACE_MKSTEMP=1
+        ;;
+    esac
+  else
+    HAVE_MKSTEMP=0
+  fi
+
+  if test $HAVE_MKSTEMP = 0 || test $REPLACE_MKSTEMP = 1; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS mkstemp.$ac_objext"
+
+
+
+  fi
+
+
+
+
+
+          GNULIB_MKSTEMP=1
+
+
+
+
+
+$as_echo "#define GNULIB_TEST_MKSTEMP 1" >>confdefs.h
+
+
+
+
   if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
 
 
@@ -20639,6 +20771,69 @@ $as_echo "#define GNULIB_TEST_RMDIR 1" >>confdefs.h
 
 
 
+
+
+
+  if test $ac_cv_func_secure_getenv = no; then
+    HAVE_SECURE_GETENV=0
+  fi
+
+  if test $HAVE_SECURE_GETENV = 0; then
+
+
+
+
+
+
+
+
+  gl_LIBOBJS="$gl_LIBOBJS secure_getenv.$ac_objext"
+
+
+  for ac_func in __secure_getenv
+do :
+  ac_fn_c_check_func "$LINENO" "__secure_getenv" "ac_cv_func___secure_getenv"
+if test "x$ac_cv_func___secure_getenv" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE___SECURE_GETENV 1
+_ACEOF
+
+fi
+done
+
+  if test $ac_cv_func___secure_getenv = no; then
+    for ac_func in issetugid
+do :
+  ac_fn_c_check_func "$LINENO" "issetugid" "ac_cv_func_issetugid"
+if test "x$ac_cv_func_issetugid" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_ISSETUGID 1
+_ACEOF
+
+fi
+done
+
+  fi
+
+
+  fi
+
+
+
+
+
+          GNULIB_SECURE_GETENV=1
+
+
+
+
+
+$as_echo "#define GNULIB_TEST_SECURE_GETENV 1" >>confdefs.h
+
+
+
+
+
      if test $ac_cv_func_setenv = no; then
     HAVE_SETENV=0
   else
@@ -22301,6 +22496,11 @@ fi
 
 
 
+  :
+
+
+
+
 
 
 
diff --git a/gdb/gnulib/import/Makefile.am b/gdb/gnulib/import/Makefile.am
index 93e347b..8409386 100644
--- a/gdb/gnulib/import/Makefile.am
+++ b/gdb/gnulib/import/Makefile.am
@@ -21,7 +21,7 @@
 # the same distribution terms as the rest of that program.
 #
 # Generated by gnulib-tool.
-# Reproduce by: gnulib-tool --import --lib=libgnu --source-base=import --m4-base=import/m4 --doc-base=doc --tests-base=tests --aux-dir=import/extra --no-conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca canonicalize-lgpl dirent dirfd errno fnmatch-gnu frexpl getcwd glob inttypes limits-h lstat memchr memmem pathmax rawmemchr readlink rename setenv signal-h strchrnul strstr strtok_r sys_stat unistd unsetenv update-copyright wchar wctype-h
+# Reproduce by: gnulib-tool --import --lib=libgnu --source-base=import --m4-base=import/m4 --doc-base=doc --tests-base=tests --aux-dir=import/extra --no-conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca canonicalize-lgpl dirent dirfd errno fnmatch-gnu frexpl getcwd glob inttypes limits-h lstat memchr memmem mkstemp pathmax rawmemchr readlink rename setenv signal-h strchrnul strstr strtok_r sys_stat unistd unsetenv update-copyright wchar wctype-h
 
 AUTOMAKE_OPTIONS = 1.9.6 gnits
 
@@ -1169,6 +1169,15 @@ EXTRA_libgnu_a_SOURCES += memrchr.c
 
 ## end   gnulib module memrchr
 
+## begin gnulib module mkstemp
+
+
+EXTRA_DIST += mkstemp.c
+
+EXTRA_libgnu_a_SOURCES += mkstemp.c
+
+## end   gnulib module mkstemp
+
 ## begin gnulib module msvc-inval
 
 
@@ -1312,6 +1321,15 @@ EXTRA_DIST += save-cwd.h
 
 ## end   gnulib module save-cwd
 
+## begin gnulib module secure_getenv
+
+
+EXTRA_DIST += secure_getenv.c
+
+EXTRA_libgnu_a_SOURCES += secure_getenv.c
+
+## end   gnulib module secure_getenv
+
 ## begin gnulib module setenv
 
 
@@ -2080,6 +2098,14 @@ EXTRA_DIST += sys_types.in.h
 
 ## end   gnulib module sys_types
 
+## begin gnulib module tempname
+
+libgnu_a_SOURCES += tempname.c
+
+EXTRA_DIST += tempname.h
+
+## end   gnulib module tempname
+
 ## begin gnulib module time
 
 BUILT_SOURCES += time.h
diff --git a/gdb/gnulib/import/Makefile.in b/gdb/gnulib/import/Makefile.in
index 146ed64..fbaa140 100644
--- a/gdb/gnulib/import/Makefile.in
+++ b/gdb/gnulib/import/Makefile.in
@@ -36,7 +36,7 @@
 # the same distribution terms as the rest of that program.
 #
 # Generated by gnulib-tool.
-# Reproduce by: gnulib-tool --import --lib=libgnu --source-base=import --m4-base=import/m4 --doc-base=doc --tests-base=tests --aux-dir=import/extra --no-conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca canonicalize-lgpl dirent dirfd errno fnmatch-gnu frexpl getcwd glob inttypes limits-h lstat memchr memmem pathmax rawmemchr readlink rename setenv signal-h strchrnul strstr strtok_r sys_stat unistd unsetenv update-copyright wchar wctype-h
+# Reproduce by: gnulib-tool --import --lib=libgnu --source-base=import --m4-base=import/m4 --doc-base=doc --tests-base=tests --aux-dir=import/extra --no-conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca canonicalize-lgpl dirent dirfd errno fnmatch-gnu frexpl getcwd glob inttypes limits-h lstat memchr memmem mkstemp pathmax rawmemchr readlink rename setenv signal-h strchrnul strstr strtok_r sys_stat unistd unsetenv update-copyright wchar wctype-h
 
 
 
@@ -137,6 +137,7 @@ am__aclocal_m4_deps = $(top_srcdir)/import/m4/00gnulib.m4 \
 	$(top_srcdir)/import/m4/memmem.m4 \
 	$(top_srcdir)/import/m4/mempcpy.m4 \
 	$(top_srcdir)/import/m4/memrchr.m4 \
+	$(top_srcdir)/import/m4/mkstemp.m4 \
 	$(top_srcdir)/import/m4/mmap-anon.m4 \
 	$(top_srcdir)/import/m4/mode_t.m4 \
 	$(top_srcdir)/import/m4/msvc-inval.m4 \
@@ -156,6 +157,7 @@ am__aclocal_m4_deps = $(top_srcdir)/import/m4/00gnulib.m4 \
 	$(top_srcdir)/import/m4/rewinddir.m4 \
 	$(top_srcdir)/import/m4/rmdir.m4 \
 	$(top_srcdir)/import/m4/save-cwd.m4 \
+	$(top_srcdir)/import/m4/secure_getenv.m4 \
 	$(top_srcdir)/import/m4/setenv.m4 \
 	$(top_srcdir)/import/m4/signal_h.m4 \
 	$(top_srcdir)/import/m4/ssize_t.m4 \
@@ -175,6 +177,7 @@ am__aclocal_m4_deps = $(top_srcdir)/import/m4/00gnulib.m4 \
 	$(top_srcdir)/import/m4/sys_stat_h.m4 \
 	$(top_srcdir)/import/m4/sys_time_h.m4 \
 	$(top_srcdir)/import/m4/sys_types_h.m4 \
+	$(top_srcdir)/import/m4/tempname.m4 \
 	$(top_srcdir)/import/m4/time_h.m4 \
 	$(top_srcdir)/import/m4/unistd-safer.m4 \
 	$(top_srcdir)/import/m4/unistd_h.m4 \
@@ -198,8 +201,9 @@ am_libgnu_a_OBJECTS = cloexec.$(OBJEXT) dirname-lgpl.$(OBJEXT) \
 	filenamecat-lgpl.$(OBJEXT) getprogname.$(OBJEXT) \
 	hard-locale.$(OBJEXT) localcharset.$(OBJEXT) malloca.$(OBJEXT) \
 	math.$(OBJEXT) openat-die.$(OBJEXT) save-cwd.$(OBJEXT) \
-	strnlen1.$(OBJEXT) unistd.$(OBJEXT) dup-safer.$(OBJEXT) \
-	fd-safer.$(OBJEXT) pipe-safer.$(OBJEXT) wctype-h.$(OBJEXT)
+	strnlen1.$(OBJEXT) tempname.$(OBJEXT) unistd.$(OBJEXT) \
+	dup-safer.$(OBJEXT) fd-safer.$(OBJEXT) pipe-safer.$(OBJEXT) \
+	wctype-h.$(OBJEXT)
 libgnu_a_OBJECTS = $(am_libgnu_a_OBJECTS)
 LTLIBRARIES = $(noinst_LTLIBRARIES)
 DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
@@ -1352,12 +1356,12 @@ EXTRA_DIST = m4/gnulib-cache.m4 alloca.c alloca.in.h assure.h \
 	lstat.c malloc.c malloca.h malloca.valgrind math.in.h \
 	mbrtowc.c mbsinit.c mbsrtowcs-impl.h mbsrtowcs-state.c \
 	mbsrtowcs.c memchr.c memchr.valgrind memmem.c str-two-way.h \
-	mempcpy.c memrchr.c msvc-inval.c msvc-inval.h msvc-nothrow.c \
-	msvc-nothrow.h open.c openat.c openat.h dirent-private.h \
-	opendir.c pathmax.h rawmemchr.c rawmemchr.valgrind \
-	dirent-private.h readdir.c readlink.c realloc.c rename.c \
-	dirent-private.h rewinddir.c rmdir.c same-inode.h save-cwd.h \
-	setenv.c signal.in.h \
+	mempcpy.c memrchr.c mkstemp.c msvc-inval.c msvc-inval.h \
+	msvc-nothrow.c msvc-nothrow.h open.c openat.c openat.h \
+	dirent-private.h opendir.c pathmax.h rawmemchr.c \
+	rawmemchr.valgrind dirent-private.h readdir.c readlink.c \
+	realloc.c rename.c dirent-private.h rewinddir.c rmdir.c \
+	same-inode.h save-cwd.h secure_getenv.c setenv.c signal.in.h \
 	$(top_srcdir)/import/extra/snippet/_Noreturn.h \
 	$(top_srcdir)/import/extra/snippet/arg-nonnull.h \
 	$(top_srcdir)/import/extra/snippet/c++defs.h \
@@ -1366,9 +1370,10 @@ EXTRA_DIST = m4/gnulib-cache.m4 alloca.c alloca.in.h assure.h \
 	strchrnul.c strchrnul.valgrind strdup.c streq.h strerror.c \
 	strerror-override.c strerror-override.h string.in.h \
 	str-two-way.h strstr.c strtok_r.c sys_stat.in.h sys_time.in.h \
-	sys_types.in.h time.in.h unistd.in.h unistd--.h unistd-safer.h \
-	unsetenv.c $(top_srcdir)/import/extra/update-copyright \
-	verify.h wchar.in.h wctype.in.h
+	sys_types.in.h tempname.h time.in.h unistd.in.h unistd--.h \
+	unistd-safer.h unsetenv.c \
+	$(top_srcdir)/import/extra/update-copyright verify.h \
+	wchar.in.h wctype.in.h
 
 # The BUILT_SOURCES created by this Makefile snippet are not used via #include
 # statements but through direct file reference. Therefore this snippet must be
@@ -1408,8 +1413,8 @@ libgnu_a_SOURCES = cloexec.c dirname-lgpl.c basename-lgpl.c \
 	stripslash.c exitfail.c fd-hook.c filenamecat-lgpl.c \
 	getprogname.h getprogname.c gettext.h hard-locale.c \
 	localcharset.h localcharset.c malloca.c math.c openat-die.c \
-	save-cwd.c strnlen1.h strnlen1.c unistd.c dup-safer.c \
-	fd-safer.c pipe-safer.c wctype-h.c
+	save-cwd.c strnlen1.h strnlen1.c tempname.c unistd.c \
+	dup-safer.c fd-safer.c pipe-safer.c wctype-h.c
 libgnu_a_LIBADD = $(gl_LIBOBJS) @ALLOCA@
 libgnu_a_DEPENDENCIES = $(gl_LIBOBJS) @ALLOCA@
 EXTRA_libgnu_a_SOURCES = alloca.c openat-proc.c canonicalize-lgpl.c \
@@ -1419,11 +1424,12 @@ EXTRA_libgnu_a_SOURCES = alloca.c openat-proc.c canonicalize-lgpl.c \
 	fstatat.c getcwd.c getcwd-lgpl.c getdtablesize.c getlogin_r.c \
 	gettimeofday.c glob.c isnan.c isnand.c isnan.c isnanl.c \
 	lstat.c malloc.c mbrtowc.c mbsinit.c mbsrtowcs-state.c \
-	mbsrtowcs.c memchr.c memmem.c mempcpy.c memrchr.c msvc-inval.c \
-	msvc-nothrow.c open.c openat.c opendir.c rawmemchr.c readdir.c \
-	readlink.c realloc.c rename.c rewinddir.c rmdir.c setenv.c \
-	stat.c strchrnul.c strdup.c strerror.c strerror-override.c \
-	strstr.c strtok_r.c unsetenv.c
+	mbsrtowcs.c memchr.c memmem.c mempcpy.c memrchr.c mkstemp.c \
+	msvc-inval.c msvc-nothrow.c open.c openat.c opendir.c \
+	rawmemchr.c readdir.c readlink.c realloc.c rename.c \
+	rewinddir.c rmdir.c secure_getenv.c setenv.c stat.c \
+	strchrnul.c strdup.c strerror.c strerror-override.c strstr.c \
+	strtok_r.c unsetenv.c
 
 # Use this preprocessor expression to decide whether #include_next works.
 # Do not rely on a 'configure'-time test for this, since the expression
@@ -1551,6 +1557,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/memmem.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mempcpy.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/memrchr.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mkstemp.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/msvc-inval.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/msvc-nothrow.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/open.Po@am__quote@
@@ -1567,6 +1574,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/rewinddir.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/rmdir.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/save-cwd.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/secure_getenv.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/setenv.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stat.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/strchrnul.Po@am__quote@
@@ -1577,6 +1585,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/strnlen1.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/strstr.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/strtok_r.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tempname.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/unistd.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/unsetenv.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/wctype-h.Po@am__quote@
diff --git a/gdb/gnulib/import/m4/gnulib-cache.m4 b/gdb/gnulib/import/m4/gnulib-cache.m4
index e382c39..f65058f 100644
--- a/gdb/gnulib/import/m4/gnulib-cache.m4
+++ b/gdb/gnulib/import/m4/gnulib-cache.m4
@@ -27,7 +27,7 @@
 
 
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --lib=libgnu --source-base=import --m4-base=import/m4 --doc-base=doc --tests-base=tests --aux-dir=import/extra --no-conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca canonicalize-lgpl dirent dirfd errno fnmatch-gnu frexpl getcwd glob inttypes limits-h lstat memchr memmem pathmax rawmemchr readlink rename setenv signal-h strchrnul strstr strtok_r sys_stat unistd unsetenv update-copyright wchar wctype-h
+#   gnulib-tool --import --lib=libgnu --source-base=import --m4-base=import/m4 --doc-base=doc --tests-base=tests --aux-dir=import/extra --no-conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca canonicalize-lgpl dirent dirfd errno fnmatch-gnu frexpl getcwd glob inttypes limits-h lstat memchr memmem mkstemp pathmax rawmemchr readlink rename setenv signal-h strchrnul strstr strtok_r sys_stat unistd unsetenv update-copyright wchar wctype-h
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([])
@@ -46,6 +46,7 @@ gl_MODULES([
   lstat
   memchr
   memmem
+  mkstemp
   pathmax
   rawmemchr
   readlink
diff --git a/gdb/gnulib/import/m4/gnulib-comp.m4 b/gdb/gnulib/import/m4/gnulib-comp.m4
index de13675..98d2d6b 100644
--- a/gdb/gnulib/import/m4/gnulib-comp.m4
+++ b/gdb/gnulib/import/m4/gnulib-comp.m4
@@ -118,6 +118,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module memmem-simple:
   # Code from module mempcpy:
   # Code from module memrchr:
+  # Code from module mkstemp:
   # Code from module msvc-inval:
   # Code from module msvc-nothrow:
   # Code from module multiarch:
@@ -137,6 +138,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module rmdir:
   # Code from module same-inode:
   # Code from module save-cwd:
+  # Code from module secure_getenv:
   # Code from module setenv:
   # Code from module signal-h:
   # Code from module snippet/_Noreturn:
@@ -163,6 +165,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module sys_stat:
   # Code from module sys_time:
   # Code from module sys_types:
+  # Code from module tempname:
   # Code from module time:
   # Code from module unistd:
   # Code from module unistd-safer:
@@ -421,6 +424,12 @@ AC_DEFUN([gl_INIT],
     gl_PREREQ_MEMRCHR
   fi
   gl_STRING_MODULE_INDICATOR([memrchr])
+  gl_FUNC_MKSTEMP
+  if test $HAVE_MKSTEMP = 0 || test $REPLACE_MKSTEMP = 1; then
+    AC_LIBOBJ([mkstemp])
+    gl_PREREQ_MKSTEMP
+  fi
+  gl_STDLIB_MODULE_INDICATOR([mkstemp])
   AC_REQUIRE([gl_MSVC_INVAL])
   if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
     AC_LIBOBJ([msvc-inval])
@@ -487,6 +496,12 @@ AC_DEFUN([gl_INIT],
   fi
   gl_UNISTD_MODULE_INDICATOR([rmdir])
   gl_SAVE_CWD
+  gl_FUNC_SECURE_GETENV
+  if test $HAVE_SECURE_GETENV = 0; then
+    AC_LIBOBJ([secure_getenv])
+    gl_PREREQ_SECURE_GETENV
+  fi
+  gl_STDLIB_MODULE_INDICATOR([secure_getenv])
   gl_FUNC_SETENV
   if test $HAVE_SETENV = 0 || test $REPLACE_SETENV = 1; then
     AC_LIBOBJ([setenv])
@@ -551,6 +566,7 @@ AC_DEFUN([gl_INIT],
   AC_PROG_MKDIR_P
   gl_SYS_TYPES_H
   AC_PROG_MKDIR_P
+  gl_FUNC_GEN_TEMPNAME
   gl_HEADER_TIME_H
   gl_UNISTD_H
   gl_UNISTD_SAFER
@@ -797,6 +813,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/memmem.c
   lib/mempcpy.c
   lib/memrchr.c
+  lib/mkstemp.c
   lib/msvc-inval.c
   lib/msvc-inval.h
   lib/msvc-nothrow.c
@@ -823,6 +840,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/same-inode.h
   lib/save-cwd.c
   lib/save-cwd.h
+  lib/secure_getenv.c
   lib/setenv.c
   lib/signal.in.h
   lib/stat.c
@@ -848,6 +866,8 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/sys_stat.in.h
   lib/sys_time.in.h
   lib/sys_types.in.h
+  lib/tempname.c
+  lib/tempname.h
   lib/time.in.h
   lib/unistd--.h
   lib/unistd-safer.h
@@ -932,6 +952,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/memmem.m4
   m4/mempcpy.m4
   m4/memrchr.m4
+  m4/mkstemp.m4
   m4/mmap-anon.m4
   m4/mode_t.m4
   m4/msvc-inval.m4
@@ -951,6 +972,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/rewinddir.m4
   m4/rmdir.m4
   m4/save-cwd.m4
+  m4/secure_getenv.m4
   m4/setenv.m4
   m4/signal_h.m4
   m4/ssize_t.m4
@@ -970,6 +992,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/sys_stat_h.m4
   m4/sys_time_h.m4
   m4/sys_types_h.m4
+  m4/tempname.m4
   m4/time_h.m4
   m4/unistd-safer.m4
   m4/unistd_h.m4
diff --git a/gdb/gnulib/import/m4/mkstemp.m4 b/gdb/gnulib/import/m4/mkstemp.m4
new file mode 100644
index 0000000..131e4a7
--- /dev/null
+++ b/gdb/gnulib/import/m4/mkstemp.m4
@@ -0,0 +1,82 @@
+#serial 23
+
+# Copyright (C) 2001, 2003-2007, 2009-2016 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# On some hosts (e.g., HP-UX 10.20, SunOS 4.1.4, Solaris 2.5.1), mkstemp has a
+# silly limit that it can create no more than 26 files from a given template.
+# Other systems lack mkstemp altogether.
+# On OSF1/Tru64 V4.0F, the system-provided mkstemp function can create
+# only 32 files per process.
+# On some hosts, mkstemp creates files with mode 0666, which is a security
+# problem and a violation of POSIX 2008.
+# On systems like the above, arrange to use the replacement function.
+AC_DEFUN([gl_FUNC_MKSTEMP],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  AC_CHECK_FUNCS_ONCE([mkstemp])
+  if test $ac_cv_func_mkstemp = yes; then
+    AC_CACHE_CHECK([for working mkstemp],
+      [gl_cv_func_working_mkstemp],
+      [
+        mkdir conftest.mkstemp
+        AC_RUN_IFELSE(
+          [AC_LANG_PROGRAM(
+            [AC_INCLUDES_DEFAULT],
+            [[int result = 0;
+              int i;
+              off_t large = (off_t) 4294967295u;
+              if (large < 0)
+                large = 2147483647;
+              umask (0);
+              for (i = 0; i < 70; i++)
+                {
+                  char templ[] = "conftest.mkstemp/coXXXXXX";
+                  int (*mkstemp_function) (char *) = mkstemp;
+                  int fd = mkstemp_function (templ);
+                  if (fd < 0)
+                    result |= 1;
+                  else
+                    {
+                      struct stat st;
+                      if (lseek (fd, large, SEEK_SET) != large)
+                        result |= 2;
+                      if (fstat (fd, &st) < 0)
+                        result |= 4;
+                      else if (st.st_mode & 0077)
+                        result |= 8;
+                      if (close (fd))
+                        result |= 16;
+                    }
+                }
+              return result;]])],
+          [gl_cv_func_working_mkstemp=yes],
+          [gl_cv_func_working_mkstemp=no],
+          [case "$host_os" in
+                     # Guess yes on glibc systems.
+             *-gnu*) gl_cv_func_working_mkstemp="guessing yes" ;;
+                     # If we don't know, assume the worst.
+             *)      gl_cv_func_working_mkstemp="guessing no" ;;
+           esac
+          ])
+        rm -rf conftest.mkstemp
+      ])
+    case "$gl_cv_func_working_mkstemp" in
+      *yes) ;;
+      *)
+        REPLACE_MKSTEMP=1
+        ;;
+    esac
+  else
+    HAVE_MKSTEMP=0
+  fi
+])
+
+# Prerequisites of lib/mkstemp.c.
+AC_DEFUN([gl_PREREQ_MKSTEMP],
+[
+])
diff --git a/gdb/gnulib/import/m4/secure_getenv.m4 b/gdb/gnulib/import/m4/secure_getenv.m4
new file mode 100644
index 0000000..3983173
--- /dev/null
+++ b/gdb/gnulib/import/m4/secure_getenv.m4
@@ -0,0 +1,26 @@
+# Look up an environment variable more securely.
+dnl Copyright 2013-2016 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_SECURE_GETENV],
+[
+  dnl Persuade glibc <stdlib.h> to declare secure_getenv().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([secure_getenv])
+  if test $ac_cv_func_secure_getenv = no; then
+    HAVE_SECURE_GETENV=0
+  fi
+])
+
+# Prerequisites of lib/secure_getenv.c.
+AC_DEFUN([gl_PREREQ_SECURE_GETENV], [
+  AC_CHECK_FUNCS([__secure_getenv])
+  if test $ac_cv_func___secure_getenv = no; then
+    AC_CHECK_FUNCS([issetugid])
+  fi
+  AC_CHECK_FUNCS_ONCE([getuid geteuid getgid getegid])
+])
diff --git a/gdb/gnulib/import/m4/tempname.m4 b/gdb/gnulib/import/m4/tempname.m4
new file mode 100644
index 0000000..acf4c8d
--- /dev/null
+++ b/gdb/gnulib/import/m4/tempname.m4
@@ -0,0 +1,19 @@
+#serial 5
+
+# Copyright (C) 2006-2007, 2009-2016 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# glibc provides __gen_tempname as a wrapper for mk[ds]temp.  Expose
+# it as a public API, and provide it on systems that are lacking.
+AC_DEFUN([gl_FUNC_GEN_TEMPNAME],
+[
+  gl_PREREQ_TEMPNAME
+])
+
+# Prerequisites of lib/tempname.c.
+AC_DEFUN([gl_PREREQ_TEMPNAME],
+[
+  :
+])
diff --git a/gdb/gnulib/import/mkstemp.c b/gdb/gnulib/import/mkstemp.c
new file mode 100644
index 0000000..90ed78e
--- /dev/null
+++ b/gdb/gnulib/import/mkstemp.c
@@ -0,0 +1,50 @@
+/* Copyright (C) 1998-1999, 2001, 2005-2007, 2009-2016 Free Software
+   Foundation, Inc.
+   This file is derived from the one in the GNU C Library.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#if !_LIBC
+# include <config.h>
+#endif
+
+#include <stdlib.h>
+
+#if !_LIBC
+# include "tempname.h"
+# define __gen_tempname gen_tempname
+# ifndef __GT_FILE
+#  define __GT_FILE GT_FILE
+# endif
+#endif
+
+#include <stdio.h>
+
+#ifndef __GT_FILE
+# define __GT_FILE 0
+#endif
+
+/* Generate a unique temporary file name from XTEMPLATE.
+   The last six characters of XTEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the file name unique.
+   Then open the file and return a fd.
+
+   If you are creating temporary files which will later be removed,
+   consider using the clean-temp module, which avoids several pitfalls
+   of using mkstemp directly. */
+int
+mkstemp (char *xtemplate)
+{
+  return __gen_tempname (xtemplate, 0, 0, __GT_FILE);
+}
diff --git a/gdb/gnulib/import/secure_getenv.c b/gdb/gnulib/import/secure_getenv.c
new file mode 100644
index 0000000..88a60dc
--- /dev/null
+++ b/gdb/gnulib/import/secure_getenv.c
@@ -0,0 +1,54 @@
+/* Look up an environment variable, returning NULL in insecure situations.
+
+   Copyright 2013-2016 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#if !HAVE___SECURE_GETENV
+# if HAVE_ISSETUGID || (HAVE_GETUID && HAVE_GETEUID && HAVE_GETGID && HAVE_GETEGID)
+#  include <unistd.h>
+# endif
+#endif
+
+char *
+secure_getenv (char const *name)
+{
+#if HAVE___SECURE_GETENV /* glibc */
+  return __secure_getenv (name);
+#elif HAVE_ISSETUGID /* OS X, FreeBSD, NetBSD, OpenBSD */
+  if (issetugid ())
+    return NULL;
+  return getenv (name);
+#elif HAVE_GETUID && HAVE_GETEUID && HAVE_GETGID && HAVE_GETEGID /* other Unix */
+  if (geteuid () != getuid () || getegid () != getgid ())
+    return NULL;
+  return getenv (name);
+#elif (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ /* native Windows */
+  /* On native Windows, there is no such concept as setuid or setgid binaries.
+     - Programs launched as system services have high privileges, but they don't
+       inherit environment variables from a user.
+     - Programs launched by a user with "Run as Administrator" have high
+       privileges and use the environment variables, but the user has been asked
+       whether he agrees.
+     - Programs launched by a user without "Run as Administrator" cannot gain
+       high privileges, therefore there is no risk. */
+  return getenv (name);
+#else
+  return NULL;
+#endif
+}
diff --git a/gdb/gnulib/import/tempname.c b/gdb/gnulib/import/tempname.c
new file mode 100644
index 0000000..b1e9880
--- /dev/null
+++ b/gdb/gnulib/import/tempname.c
@@ -0,0 +1,324 @@
+/* tempname.c - generate the name of a temporary file.
+
+   Copyright (C) 1991-2003, 2005-2007, 2009-2016 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Extracted from glibc sysdeps/posix/tempname.c.  See also tmpdir.c.  */
+
+#if !_LIBC
+# include <config.h>
+# include "tempname.h"
+#endif
+
+#include <sys/types.h>
+#include <assert.h>
+
+#include <errno.h>
+#ifndef __set_errno
+# define __set_errno(Val) errno = (Val)
+#endif
+
+#include <stdio.h>
+#ifndef P_tmpdir
+# define P_tmpdir "/tmp"
+#endif
+#ifndef TMP_MAX
+# define TMP_MAX 238328
+#endif
+#ifndef __GT_FILE
+# define __GT_FILE      0
+# define __GT_DIR       1
+# define __GT_NOCREATE  2
+#endif
+#if !_LIBC && (GT_FILE != __GT_FILE || GT_DIR != __GT_DIR       \
+               || GT_NOCREATE != __GT_NOCREATE)
+# error report this to bug-gnulib@gnu.org
+#endif
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <fcntl.h>
+#include <sys/time.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include <sys/stat.h>
+
+#if _LIBC
+# define struct_stat64 struct stat64
+#else
+# define struct_stat64 struct stat
+# define __try_tempname try_tempname
+# define __gen_tempname gen_tempname
+# define __getpid getpid
+# define __gettimeofday gettimeofday
+# define __mkdir mkdir
+# define __open open
+# define __lxstat64(version, file, buf) lstat (file, buf)
+# define __secure_getenv secure_getenv
+#endif
+
+#ifdef _LIBC
+# include <hp-timing.h>
+# if HP_TIMING_AVAIL
+#  define RANDOM_BITS(Var) \
+  if (__builtin_expect (value == UINT64_C (0), 0))                            \
+    {                                                                         \
+      /* If this is the first time this function is used initialize           \
+         the variable we accumulate the value in to some somewhat             \
+         random value.  If we'd not do this programs at startup time          \
+         might have a reduced set of possible names, at least on slow         \
+         machines.  */                                                        \
+      struct timeval tv;                                                      \
+      __gettimeofday (&tv, NULL);                                             \
+      value = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec;                      \
+    }                                                                         \
+  HP_TIMING_NOW (Var)
+# endif
+#endif
+
+/* Use the widest available unsigned type if uint64_t is not
+   available.  The algorithm below extracts a number less than 62**6
+   (approximately 2**35.725) from uint64_t, so ancient hosts where
+   uintmax_t is only 32 bits lose about 3.725 bits of randomness,
+   which is better than not having mkstemp at all.  */
+#if !defined UINT64_MAX && !defined uint64_t
+# define uint64_t uintmax_t
+#endif
+
+#if _LIBC
+/* Return nonzero if DIR is an existent directory.  */
+static int
+direxists (const char *dir)
+{
+  struct_stat64 buf;
+  return __xstat64 (_STAT_VER, dir, &buf) == 0 && S_ISDIR (buf.st_mode);
+}
+
+/* Path search algorithm, for tmpnam, tmpfile, etc.  If DIR is
+   non-null and exists, uses it; otherwise uses the first of $TMPDIR,
+   P_tmpdir, /tmp that exists.  Copies into TMPL a template suitable
+   for use with mk[s]temp.  Will fail (-1) if DIR is non-null and
+   doesn't exist, none of the searched dirs exists, or there's not
+   enough space in TMPL. */
+int
+__path_search (char *tmpl, size_t tmpl_len, const char *dir, const char *pfx,
+               int try_tmpdir)
+{
+  const char *d;
+  size_t dlen, plen;
+
+  if (!pfx || !pfx[0])
+    {
+      pfx = "file";
+      plen = 4;
+    }
+  else
+    {
+      plen = strlen (pfx);
+      if (plen > 5)
+        plen = 5;
+    }
+
+  if (try_tmpdir)
+    {
+      d = __secure_getenv ("TMPDIR");
+      if (d != NULL && direxists (d))
+        dir = d;
+      else if (dir != NULL && direxists (dir))
+        /* nothing */ ;
+      else
+        dir = NULL;
+    }
+  if (dir == NULL)
+    {
+      if (direxists (P_tmpdir))
+        dir = P_tmpdir;
+      else if (strcmp (P_tmpdir, "/tmp") != 0 && direxists ("/tmp"))
+        dir = "/tmp";
+      else
+        {
+          __set_errno (ENOENT);
+          return -1;
+        }
+    }
+
+  dlen = strlen (dir);
+  while (dlen > 1 && dir[dlen - 1] == '/')
+    dlen--;                     /* remove trailing slashes */
+
+  /* check we have room for "${dir}/${pfx}XXXXXX\0" */
+  if (tmpl_len < dlen + 1 + plen + 6 + 1)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  sprintf (tmpl, "%.*s/%.*sXXXXXX", (int) dlen, dir, (int) plen, pfx);
+  return 0;
+}
+#endif /* _LIBC */
+
+/* These are the characters used in temporary file names.  */
+static const char letters[] =
+"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+
+int
+__try_tempname (char *tmpl, int suffixlen, void *args,
+                int (*tryfunc) (char *, void *))
+{
+  int len;
+  char *XXXXXX;
+  static uint64_t value;
+  uint64_t random_time_bits;
+  unsigned int count;
+  int fd = -1;
+  int save_errno = errno;
+
+  /* A lower bound on the number of temporary files to attempt to
+     generate.  The maximum total number of temporary file names that
+     can exist for a given template is 62**6.  It should never be
+     necessary to try all of these combinations.  Instead if a reasonable
+     number of names is tried (we define reasonable as 62**3) fail to
+     give the system administrator the chance to remove the problems.  */
+#define ATTEMPTS_MIN (62 * 62 * 62)
+
+  /* The number of times to attempt to generate a temporary file.  To
+     conform to POSIX, this must be no smaller than TMP_MAX.  */
+#if ATTEMPTS_MIN < TMP_MAX
+  unsigned int attempts = TMP_MAX;
+#else
+  unsigned int attempts = ATTEMPTS_MIN;
+#endif
+
+  len = strlen (tmpl);
+  if (len < 6 + suffixlen || memcmp (&tmpl[len - 6 - suffixlen], "XXXXXX", 6))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  /* This is where the Xs start.  */
+  XXXXXX = &tmpl[len - 6 - suffixlen];
+
+  /* Get some more or less random data.  */
+#ifdef RANDOM_BITS
+  RANDOM_BITS (random_time_bits);
+#else
+  {
+    struct timeval tv;
+    __gettimeofday (&tv, NULL);
+    random_time_bits = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec;
+  }
+#endif
+  value += random_time_bits ^ __getpid ();
+
+  for (count = 0; count < attempts; value += 7777, ++count)
+    {
+      uint64_t v = value;
+
+      /* Fill in the random bits.  */
+      XXXXXX[0] = letters[v % 62];
+      v /= 62;
+      XXXXXX[1] = letters[v % 62];
+      v /= 62;
+      XXXXXX[2] = letters[v % 62];
+      v /= 62;
+      XXXXXX[3] = letters[v % 62];
+      v /= 62;
+      XXXXXX[4] = letters[v % 62];
+      v /= 62;
+      XXXXXX[5] = letters[v % 62];
+
+      fd = tryfunc (tmpl, args);
+      if (fd >= 0)
+        {
+          __set_errno (save_errno);
+          return fd;
+        }
+      else if (errno != EEXIST)
+        return -1;
+    }
+
+  /* We got out of the loop because we ran out of combinations to try.  */
+  __set_errno (EEXIST);
+  return -1;
+}
+
+static int
+try_file (char *tmpl, void *flags)
+{
+  int *openflags = flags;
+  return __open (tmpl,
+                 (*openflags & ~O_ACCMODE)
+                 | O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
+}
+
+static int
+try_dir (char *tmpl, void *flags _GL_UNUSED)
+{
+  return __mkdir (tmpl, S_IRUSR | S_IWUSR | S_IXUSR);
+}
+
+static int
+try_nocreate (char *tmpl, void *flags _GL_UNUSED)
+{
+  struct_stat64 st;
+
+  if (__lxstat64 (_STAT_VER, tmpl, &st) == 0)
+    __set_errno (EEXIST);
+  return errno == ENOENT ? 0 : -1;
+}
+
+/* Generate a temporary file name based on TMPL.  TMPL must match the
+   rules for mk[s]temp (i.e. end in "XXXXXX", possibly with a suffix).
+   The name constructed does not exist at the time of the call to
+   __gen_tempname.  TMPL is overwritten with the result.
+
+   KIND may be one of:
+   __GT_NOCREATE:       simply verify that the name does not exist
+                        at the time of the call.
+   __GT_FILE:           create the file using open(O_CREAT|O_EXCL)
+                        and return a read-write fd.  The file is mode 0600.
+   __GT_DIR:            create a directory, which will be mode 0700.
+
+   We use a clever algorithm to get hard-to-predict names. */
+int
+__gen_tempname (char *tmpl, int suffixlen, int flags, int kind)
+{
+  int (*tryfunc) (char *, void *);
+
+  switch (kind)
+    {
+    case __GT_FILE:
+      tryfunc = try_file;
+      break;
+
+    case __GT_DIR:
+      tryfunc = try_dir;
+      break;
+
+    case __GT_NOCREATE:
+      tryfunc = try_nocreate;
+      break;
+
+    default:
+      assert (! "invalid KIND in __gen_tempname");
+      abort ();
+    }
+  return __try_tempname (tmpl, suffixlen, &flags, tryfunc);
+}
diff --git a/gdb/gnulib/import/tempname.h b/gdb/gnulib/import/tempname.h
new file mode 100644
index 0000000..be01c51
--- /dev/null
+++ b/gdb/gnulib/import/tempname.h
@@ -0,0 +1,65 @@
+/* Create a temporary file or directory.
+
+   Copyright (C) 2006, 2009-2016 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* header written by Eric Blake */
+
+#ifndef GL_TEMPNAME_H
+# define GL_TEMPNAME_H
+
+# include <stdio.h>
+
+# ifdef __GT_FILE
+#  define GT_FILE     __GT_FILE
+#  define GT_DIR      __GT_DIR
+#  define GT_NOCREATE __GT_NOCREATE
+# else
+#  define GT_FILE     0
+#  define GT_DIR      1
+#  define GT_NOCREATE 2
+# endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Generate a temporary file name based on TMPL.  TMPL must match the
+   rules for mk[s]temp (i.e. end in "XXXXXX", possibly with a suffix).
+   The name constructed does not exist at the time of the call to
+   gen_tempname.  TMPL is overwritten with the result.
+
+   KIND may be one of:
+   GT_NOCREATE:         simply verify that the name does not exist
+                        at the time of the call.
+   GT_FILE:             create a large file using open(O_CREAT|O_EXCL)
+                        and return a read-write fd.  The file is mode 0600.
+   GT_DIR:              create a directory, which will be mode 0700.
+
+   We use a clever algorithm to get hard-to-predict names. */
+extern int gen_tempname (char *tmpl, int suffixlen, int flags, int kind);
+
+/* Similar to gen_tempname, but TRYFUNC is called for each temporary
+   name to try.  If TRYFUNC returns a non-negative number, TRY_GEN_TEMPNAME
+   returns with this value.  Otherwise, if errno is set to EEXIST, another
+   name is tried, or else TRY_GEN_TEMPNAME returns -1. */
+extern int try_tempname (char *tmpl, int suffixlen, void *args,
+                         int (*tryfunc) (char *, void *));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GL_TEMPNAME_H */
diff --git a/gdb/gnulib/update-gnulib.sh b/gdb/gnulib/update-gnulib.sh
index 55cd6e0..74ccfb0 100755
--- a/gdb/gnulib/update-gnulib.sh
+++ b/gdb/gnulib/update-gnulib.sh
@@ -44,6 +44,7 @@ IMPORTED_GNULIB_MODULES="\
     limits-h \
     memchr \
     memmem \
+    mkstemp \
     pathmax \
     rawmemchr \
     readlink \