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-rw-r--r--libc/stdlib/malloc-standard/malloc.c1
-rw-r--r--libc/stdlib/malloc-standard/malloc.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/libc/stdlib/malloc-standard/malloc.c b/libc/stdlib/malloc-standard/malloc.c
index b4b1216ed..10d421330 100644
--- a/libc/stdlib/malloc-standard/malloc.c
+++ b/libc/stdlib/malloc-standard/malloc.c
@@ -19,6 +19,7 @@
#ifdef __UCLIBC_HAS_THREADS__
pthread_mutex_t __malloc_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
+libc_hidden_data_def(__malloc_lock)
#endif
/*
diff --git a/libc/stdlib/malloc-standard/malloc.h b/libc/stdlib/malloc-standard/malloc.h
index 6c3067e5d..628b47dc3 100644
--- a/libc/stdlib/malloc-standard/malloc.h
+++ b/libc/stdlib/malloc-standard/malloc.h
@@ -31,6 +31,7 @@ libc_hidden_proto(abort)
#ifdef __UCLIBC_HAS_THREADS__
# include <pthread.h>
extern pthread_mutex_t __malloc_lock;
+libc_hidden_proto(__malloc_lock)
#endif
#define LOCK __pthread_mutex_lock(&__malloc_lock)
#define UNLOCK __pthread_mutex_unlock(&__malloc_lock)