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-rw-r--r--tools/adler32.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/adler32.c b/tools/adler32.c
index 4e851713..5dd7e4c1 100644
--- a/tools/adler32.c
+++ b/tools/adler32.c
@@ -7,6 +7,7 @@
* Usage: adler32 [file]...
*/
+#include <stdlib.h>
#include <stdio.h>
#include <zlib.h>