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-rw-r--r--libio/vasprintf.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libio/vasprintf.c b/libio/vasprintf.c
index cf50603f0d..57a3b08eba 100644
--- a/libio/vasprintf.c
+++ b/libio/vasprintf.c
@@ -38,12 +38,16 @@ _IO_vasprintf (result_ptr, format, args)
const _IO_size_t init_string_size = 100;
char *string;
_IO_strfile sf;
+#ifdef _IO_MTSAFE_IO
_IO_lock_t lock;
+#endif
int ret;
string = ALLOC_BUF(init_string_size);
if (string == NULL)
return -1;
+#ifdef _IO_MTSAFE_IO
sf._f._lock = &lock;
+#endif
_IO_init((_IO_FILE*)&sf, 0);
_IO_JUMPS((_IO_FILE*)&sf) = &_IO_str_jumps;
_IO_str_init_static ((_IO_FILE*)&sf, string, init_string_size, string);