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-rw-r--r--popt/poptint.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/popt/poptint.h b/popt/poptint.h
index bec7c976..9c11c836 100644
--- a/popt/poptint.h
+++ b/popt/poptint.h
@@ -9,6 +9,8 @@
#ifndef H_POPTINT
#define H_POPTINT
+#include <stdlib.h>
+
/**
* Wrapper to free(3), hides const compilation noise, permit NULL, return NULL.
* @param p memory to free