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-rw-r--r--libc/signal/sigblock.c1
-rw-r--r--libc/signal/siggtmsk.c1
-rw-r--r--libc/signal/sigstmsk.c1
3 files changed, 3 insertions, 0 deletions
diff --git a/libc/signal/sigblock.c b/libc/signal/sigblock.c
index dd7a23f96..78d7a19be 100644
--- a/libc/signal/sigblock.c
+++ b/libc/signal/sigblock.c
@@ -16,6 +16,7 @@ License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
+#include <stdlib.h>
#include <errno.h>
#include <signal.h>
diff --git a/libc/signal/siggtmsk.c b/libc/signal/siggtmsk.c
index 1ee776b40..082e34d93 100644
--- a/libc/signal/siggtmsk.c
+++ b/libc/signal/siggtmsk.c
@@ -16,6 +16,7 @@ License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
+#include <stdlib.h>
#include <errno.h>
#include <signal.h>
diff --git a/libc/signal/sigstmsk.c b/libc/signal/sigstmsk.c
index c537d19c3..5439be243 100644
--- a/libc/signal/sigstmsk.c
+++ b/libc/signal/sigstmsk.c
@@ -16,6 +16,7 @@ License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
+#include <stdlib.h>
#include <errno.h>
#include <signal.h>