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diff --git a/lib/commands/toolcontext.c b/lib/commands/toolcontext.c
index 296618686..96343eeb7 100644
--- a/lib/commands/toolcontext.c
+++ b/lib/commands/toolcontext.c
@@ -1619,7 +1619,7 @@ struct cmd_context *create_toolcontext(unsigned is_clvmd,
/* FIXME Make this configurable? */
reset_lvm_errno(1);
-#ifndef VALGRIND_POOL
+#if !defined(VALGRIND_POOL) && defined(__GLIBC__)
/* Set in/out stream buffering before glibc */
if (set_buffering
#ifdef SYS_gettid
@@ -2006,7 +2006,7 @@ void destroy_toolcontext(struct cmd_context *cmd)
if (cmd->pending_delete_mem)
dm_pool_destroy(cmd->pending_delete_mem);
-#ifndef VALGRIND_POOL
+#if !defined(VALGRIND_POOL) && defined(__GLIBC__)
if (cmd->linebuffer) {
/* Reset stream buffering to defaults */
if (is_valid_fd(STDIN_FILENO) &&
diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c
index d97ff5720..bbbda82bd 100644
--- a/tools/lvmcmdline.c
+++ b/tools/lvmcmdline.c
@@ -3342,7 +3342,7 @@ static int _check_standard_fds(void)
int err = is_valid_fd(STDERR_FILENO);
if (!is_valid_fd(STDIN_FILENO) &&
- !(stdin = fopen(_PATH_DEVNULL, "r"))) {
+ !freopen(_PATH_DEVNULL, "r", stdin)) {
if (err)
perror("stdin stream open");
else
@@ -3352,7 +3352,7 @@ static int _check_standard_fds(void)
}
if (!is_valid_fd(STDOUT_FILENO) &&
- !(stdout = fopen(_PATH_DEVNULL, "w"))) {
+ !freopen(_PATH_DEVNULL, "w", stdout)) {
if (err)
perror("stdout stream open");
/* else no stdout */
@@ -3360,7 +3360,7 @@ static int _check_standard_fds(void)
}
if (!is_valid_fd(STDERR_FILENO) &&
- !(stderr = fopen(_PATH_DEVNULL, "w"))) {
+ !freopen(_PATH_DEVNULL, "w", stderr)) {
printf("stderr stream open: %s\n",
strerror(errno));
return 0;
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